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8   <title>ImageMagick: Command-line Tools: Convert</title/>
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13   <meta name="Description" content="ImageMagick® is a software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety of formats (about 100) including GIF, JPEG, JPEG-2000, PNG, PDF, PhotoCD, TIFF, and DPX. Use ImageMagick to translate, flip, mirror, rotate, scale, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.  ImageMagick is free software delivered as a ready-to-run binary distribution or as source code that you can freely use, copy, modify, and distribute. Its license is compatible with the GPL. It runs on all major operating systems.  The functionality of ImageMagick is typically utilized from the command line or you can use the features from programs written in your favorite programming language. Choose from these interfaces: MagickCore (C), MagickWand (C), ChMagick (Ch), Magick++ (C++), JMagick (Java), L-Magick (Lisp), PascalMagick (Pascal), PerlMagick (Perl), MagickWand for PHP (PHP), PythonMagick (Python), RMagick (Ruby), or TclMagick (Tcl/TK). With a language interface, use ImageMagick to modify or create images automagically and dynamically."/>
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170 \r
171 <p class="navigation-index">[<a href="#usage">Example Usage</a> &bull; <a href="#options">Option Summary</a>]</p>
172
173 <div class="doc-section">
174 <p>Use the <kbd>convert</kbd> program to convert between image formats as well as resize an image, blur, crop, despeckle, dither, draw on, flip, join, re-sample, and much more.   See <a href="../www/command-line-processing.html">Command Line Processing</a> for advice on how to structure your <kbd>convert</kbd> command or see below for example usages of the command.</p>
175 </div>
176
177 <h2><a name="usage"></a>Example Usage</h2>
178 <div class="doc-section">
179
180 <p>We list a few examples of the <kbd>convert</kbd> command here to illustrate its usefulness and ease of use.  To get started, lets convert an image in the JPEG format to PNG:</p>
181
182 <p class='crt'><span class="crtprompt"> $magick&gt; </span><span class='crtin'>convert rose.jpg rose.png</span></p>
183 <p>Next, we reduce the image size before it is written to the PNG format:</p>
184
185 <p class='crt'><span class="crtprompt"> $magick&gt; </span><span class='crtin'>convert rose.jpg -resize 50% rose.png</span></p>
186 <p class="image">
187   <a href="../images/rose.jpg">
188   <img src="../images/rose.jpg" width="70" height="46" alt="rose" />
189   </a>
190   <img style="margin-top:13px; margin-bottom:13px;" src="../images/right.gif" width="20" height="20" alt="==>" />
191   <a href="../images/rose.png">
192   <img style="margin-top:11px; margin-bottom:12px;" src="../images/rose.png" width="35" height="23" alt="rose" />
193   </a>
194 </p>
195
196 <p>You can combine multiple image-processing operations to produce complex results:</p>
197
198 <p class='crt'><span class="crtprompt"> $magick&gt; </span><span class='crtin'>convert -size 320x85 xc:transparent -font Bookman-DemiItalic -pointsize 72 \ <br/>
199 -draw "text 25,60 'Magick'" -channel RGBA -blur 0x6 -fill darkred -stroke magenta \ <br/>
200 -draw "text 20,55 'Magick'" fuzzy-magick.png</span></p>
201 <p class="image">
202   <a href="../images/fuzzy-magick.png"><img src="../images/fuzzy-magick.png" width="320" height="85" alt="fuzzy-magick" /></a>
203 </p>
204
205 <p>You can find additional examples of using <kbd>convert</kbd> in <a href="http://www.imagemagick.org/Usage/">Examples of ImageMagick Usage</a>.</p>
206
207 </div>
208
209 <h2><a name="options"></a>Option Summary</h2>
210 <div class="doc-section">
211
212 <p>The <kbd>convert</kbd> command recognizes these options.  Click on an option to get more details about how that option works.</p>
213
214 <table class="doc">
215   <tbody>
216   <tr>
217     <th align="left">Option</th>
218     <th align="left">Description</th>
219   </tr>
220
221   <tr>
222     <td valign="top"><a href="../www/command-line-options.html#adaptive-blur">-adaptive-blur <em class="option">geometry</em></a></td>
223     <td valign="top">adaptively blur pixels; decrease effect near edges</td>
224   </tr>
225
226   <tr>
227     <td valign="top"><a href="../www/command-line-options.html#adaptive-resize">-adaptive-resize <em class="option">geometry</em></a></td>
228     <td valign="top">adaptively resize image with data dependent triangulation.</td>
229   </tr>
230
231   <tr>
232     <td valign="top"><a href="../www/command-line-options.html#adaptive-sharpen">-adaptive-sharpen <em class="option">geometry</em></a></td>
233     <td valign="top">adaptively sharpen pixels; increase effect near edges</td>
234   </tr>
235
236   <tr>
237     <td valign="top"><a href="../www/command-line-options.html#adjoin">-adjoin</a></td>
238     <td valign="top">join images into a single multi-image file</td>
239   </tr>
240
241   <tr>
242     <td valign="top"><a href="../www/command-line-options.html#affine">-affine <em class="option">matrix</em></a></td>
243     <td valign="top">affine transform matrix</td>
244   </tr>
245
246   <tr>
247     <td valign="top"><a href="../www/command-line-options.html#alpha">-alpha</a></td>
248     <td valign="top">on, activate, off, deactivate, set, opaque, copy",
249 transparent, extract, background, or shape the alpha channel</td>
250   </tr>
251
252   <tr>
253     <td valign="top"><a href="../www/command-line-options.html#annotate">-annotate <em class="option">geometry text</em></a></td>
254     <td valign="top">annotate the image with text</td>
255   </tr>
256
257   <tr>
258     <td valign="top"><a href="../www/command-line-options.html#antialias">-antialias</a></td>
259     <td valign="top">remove pixel-aliasing</td>
260   </tr>
261
262   <tr>
263     <td valign="top"><a href="../www/command-line-options.html#append">-append</a></td>
264     <td valign="top">append an image sequence</td>
265   </tr>
266
267   <tr>
268     <td valign="top"><a href="../www/command-line-options.html#authenticate">-authenticate <em class="option">value</em></a></td>
269     <td valign="top">decipher image with this password</td>
270   </tr>
271
272   <tr>
273     <td valign="top"><a href="../www/command-line-options.html#auto-gamma">-auto-gamma</a></td>
274     <td valign="top">automagically adjust gamma level of image</td>
275   </tr>
276
277   <tr>
278     <td valign="top"><a href="../www/command-line-options.html#auto-level">-auto-level</a></td>
279     <td valign="top">automagically adjust color levels of image</td>
280   </tr>
281
282   <tr>
283     <td valign="top"><a href="../www/command-line-options.html#auto-orient">-auto-orient</a></td>
284     <td valign="top">automagically orient image</td>
285   </tr>
286
287   <tr>
288     <td valign="top"><a href="../www/command-line-options.html#background">-background <em class="option">color</em></a></td>
289     <td valign="top">background color</td>
290   </tr>
291
292   <tr>
293     <td valign="top"><a href="../www/command-line-options.html#bench">-bench <em class="option">iterations</em></a></td>
294     <td valign="top">measure performance</td>
295   </tr>
296
297   <tr>
298     <td valign="top"><a href="../www/command-line-options.html#bias">-bias <em class="option">value</em></a></td>
299     <td valign="top">add bias when convolving an image</td>
300   </tr>
301
302   <tr>
303     <td valign="top"><a href="../www/command-line-options.html#black-threshold">-black-threshold <em class="option">value</em></a></td>
304     <td valign="top">force all pixels below the threshold into black</td>
305   </tr>
306
307   <tr>
308     <td valign="top"><a href="../www/command-line-options.html#blue-primary">-blue-primary <em class="option">point</em></a></td>
309     <td valign="top">chromaticity blue primary point</td>
310   </tr>
311
312   <tr>
313     <td valign="top"><a href="../www/command-line-options.html#blue-shift">-blue-shift <em class="option">factor</em></a></td>
314     <td valign="top">simulate a scene at nighttime in the moonlight</td>
315   </tr>
316
317   <tr>
318     <td valign="top"><a href="../www/command-line-options.html#blur">-blur <em class="option">geometry</em></a></td>
319     <td valign="top">reduce image noise and reduce detail levels</td>
320   </tr>
321
322   <tr>
323     <td valign="top"><a href="../www/command-line-options.html#border">-border <em class="option">geometry</em></a></td>
324     <td valign="top">surround image with a border of color</td>
325   </tr>
326
327   <tr>
328     <td valign="top"><a href="../www/command-line-options.html#bordercolor">-bordercolor <em class="option">color</em></a></td>
329     <td valign="top">border color</td>
330   </tr>
331
332   <tr>
333     <td valign="top"><a href="../www/command-line-options.html#brightness-contrast">-brightness-contrast <em class="option">geometry</em></a></td>
334     <td valign="top">improve brightness / contrast of the image</td>
335   </tr>
336
337   <tr>
338     <td valign="top"><a href="../www/command-line-options.html#caption">-caption <em class="option">string</em></a></td>
339     <td valign="top">assign a caption to an image</td>
340   </tr>
341
342   <tr>
343     <td valign="top"><a href="../www/command-line-options.html#cdl">-cdl <em class="option">filename</em></a></td>
344     <td valign="top">color correct with a color decision list</td>
345   </tr>
346
347   <tr>
348     <td valign="top"><a href="../www/command-line-options.html#channel">-channel <em class="option">type</em></a></td>
349     <td valign="top">apply option to select image channels</td>
350   </tr>
351
352   <tr>
353     <td valign="top"><a href="../www/command-line-options.html#charcoal">-charcoal <em class="option">radius</em></a></td>
354     <td valign="top">simulate a charcoal drawing</td>
355   </tr>
356
357   <tr>
358     <td valign="top"><a href="../www/command-line-options.html#chop">-chop <em class="option">geometry</em></a></td>
359     <td valign="top">remove pixels from the image interior</td>
360   </tr>
361
362   <tr>
363     <td valign="top"><a href="../www/command-line-options.html#clamp">-clamp</a></td>
364     <td valign="top">restrict colors from 0 to the quantum depth</td>
365   </tr>
366
367   <tr>
368     <td valign="top"><a href="../www/command-line-options.html#clip">-clip</a></td>
369     <td valign="top">clip along the first path from the 8BIM profile</td>
370   </tr>
371
372   <tr>
373     <td valign="top"><a href="../www/command-line-options.html#clip-mask">-clip-mask</a> <em class="option">filename</em></td>
374     <td valign="top">associate clip mask with the image</td>
375   </tr>
376
377   <tr>
378     <td valign="top"><a href="../www/command-line-options.html#clip-path">-clip-path <em class="option">id</em></a></td>
379     <td valign="top">clip along a named path from the 8BIM profile</td>
380   </tr>
381
382   <tr>
383     <td valign="top"><a href="../www/command-line-options.html#clone">-clone <em class="option">index</em></a></td>
384     <td valign="top">clone an image</td>
385   </tr>
386
387   <tr>
388     <td valign="top"><a href="../www/command-line-options.html#clut">-clut</a></td>
389     <td valign="top">apply a color lookup table to the image</td>
390   </tr>
391
392   <tr>
393     <td valign="top"><a href="../www/command-line-options.html#contrast-stretch">-contrast-stretch <em class="option">geometry</em></a></td>
394     <td valign="top">improve the contrast in an image by `stretching' the range of intensity value</td>
395   </tr>
396
397   <tr>
398     <td valign="top"><a href="../www/command-line-options.html#coalesce">-coalesce</a></td>
399     <td valign="top">merge a sequence of images</td>
400   </tr>
401
402   <tr>
403     <td valign="top"><a href="../www/command-line-options.html#colorize">-colorize <em class="option">value</em></a></td>
404     <td valign="top">colorize the image with the fill color</td>
405   </tr>
406
407   <tr>
408     <td valign="top"><a href="../www/command-line-options.html#color-matrix">-color-matrix <em class="option">matrix</em></a></td>
409     <td valign="top">apply color correction to the image.</td>
410   </tr>
411
412   <tr>
413     <td valign="top"><a href="../www/command-line-options.html#colors">-colors <em class="option">value</em></a></td>
414     <td valign="top">preferred number of colors in the image</td>
415   </tr>
416
417   <tr>
418     <td valign="top"><a href="../www/command-line-options.html#colorspace">-colorspace <em class="option">type</em></a></td>
419     <td valign="top">set image colorspace</td>
420   </tr>
421
422   <tr>
423     <td valign="top"><a href="../www/command-line-options.html#combine">-combine</a></td>
424     <td valign="top">combine a sequence of images</td>
425   </tr>
426
427   <tr>
428     <td valign="top"><a href="../www/command-line-options.html#comment">-comment <em class="option">string</em></a></td>
429     <td valign="top">annotate image with comment</td>
430   </tr>
431
432   <tr>
433     <td valign="top"><a href="../www/command-line-options.html#compose">-compose <em class="option">operator</em></a></td>
434     <td valign="top">set image composite operator</td>
435   </tr>
436
437   <tr>
438     <td valign="top"><a href="../www/command-line-options.html#composite">-composite</a></td>
439     <td valign="top">composite image</td>
440   </tr>
441
442   <tr>
443     <td valign="top"><a href="../www/command-line-options.html#compress">-compress <em class="option">type</em></a></td>
444     <td valign="top">image compression type</td>
445   </tr>
446
447   <tr>
448     <td valign="top"><a href="../www/command-line-options.html#contrast">-contrast</a></td>
449     <td valign="top">enhance or reduce the image contrast</td>
450   </tr>
451
452   <tr>
453     <td valign="top"><a href="../www/command-line-options.html#convolve">-convolve <em class="option">coefficients</em></a></td>
454     <td valign="top">apply a convolution kernel to the image</td>
455   </tr>
456
457   <tr>
458     <td valign="top"><a href="../www/command-line-options.html#crop">-crop <em class="option">geometry</em></a></td>
459     <td valign="top">crop the image</td>
460   </tr>
461
462   <tr>
463     <td valign="top"><a href="../www/command-line-options.html#cycle">-cycle <em class="option">amount</em></a></td>
464     <td valign="top">cycle the image colormap</td>
465   </tr>
466
467   <tr>
468     <td valign="top"><a href="../www/command-line-options.html#decipher">-decipher <em class="option">filename</em></a></td>
469     <td valign="top">convert cipher pixels to plain</td>
470   </tr>
471
472   <tr>
473     <td valign="top"><a href="../www/command-line-options.html#debug">-debug <em class="option">events</em></a></td>
474     <td valign="top">display copious debugging information</td>
475   </tr>
476
477   <tr>
478     <td valign="top"><a href="../www/command-line-options.html#define">-define <em class="option">format:option</em></a></td>
479     <td valign="top">define one or more image format options</td>
480   </tr>
481
482   <tr>
483     <td valign="top"><a href="../www/command-line-options.html#deconstruct">-deconstruct</a></td>
484     <td valign="top">break down an image sequence into constituent parts</td>
485   </tr>
486
487   <tr>
488     <td valign="top"><a href="../www/command-line-options.html#delay">-delay <em class="option">value</em></a></td>
489     <td valign="top">display the next image after pausing</td>
490   </tr>
491
492   <tr>
493     <td valign="top"><a href="../www/command-line-options.html#delete">-delete <em class="option">index</em></a></td>
494     <td valign="top">delete the image from the image sequence</td>
495   </tr>
496
497   <tr>
498     <td valign="top"><a href="../www/command-line-options.html#density">-density <em class="option">geometry</em></a></td>
499     <td valign="top">horizontal and vertical density of the image</td>
500   </tr>
501
502   <tr>
503     <td valign="top"><a href="../www/command-line-options.html#depth">-depth <em class="option">value</em></a></td>
504     <td valign="top">image depth</td>
505   </tr>
506
507   <tr>
508     <td valign="top"><a href="../www/command-line-options.html#despeckle">-despeckle</a></td>
509     <td valign="top">reduce the speckles within an image</td>
510   </tr>
511
512   <tr>
513     <td valign="top"><a href="../www/command-line-options.html#direction">-direction <em class="option">type</em></a></td>
514     <td valign="top">render text right-to-left or left-to-right</td>
515   </tr>
516
517   <tr>
518     <td valign="top"><a href="../www/command-line-options.html#display">-display <em class="option">server</em></a></td>
519     <td valign="top">get image or font from this X server</td>
520   </tr>
521
522   <tr>
523     <td valign="top"><a href="../www/command-line-options.html#dispose">-dispose <em class="option">method</em></a></td>
524     <td valign="top">layer disposal method</td>
525   </tr>
526
527   <tr>
528     <td valign="top"><a href="../www/command-line-options.html#distort">-distort <em class="option">type coefficients</em></a></td>
529     <td valign="top">distort image</td>
530   </tr>
531
532   <tr>
533     <td valign="top"><a href="../www/command-line-options.html#dither">-dither  <em class="option">method</em></a></td>
534     <td valign="top">apply error diffusion to image</td>
535   </tr>
536
537   <tr>
538     <td valign="top"><a href="../www/command-line-options.html#draw">-draw <em class="option">string</em></a></td>
539     <td valign="top">annotate the image with a graphic primitive</td>
540   </tr>
541
542   <tr>
543     <td valign="top"><a href="../www/command-line-options.html#edge">-edge <em class="option">radius</em></a></td>
544     <td valign="top">apply a filter to detect edges in the image</td>
545   </tr>
546
547   <tr>
548     <td valign="top"><a href="../www/command-line-options.html#emboss">-emboss <em class="option">radius</em></a></td>
549     <td valign="top">emboss an image</td>
550   </tr>
551
552   <tr>
553     <td valign="top"><a href="../www/command-line-options.html#encipher">-encipher <em class="option">filename</em></a></td>
554     <td valign="top">convert plain pixels to cipher pixels</td>
555   </tr>
556
557   <tr>
558     <td valign="top"><a href="../www/command-line-options.html#encoding">-encoding <em class="option">type</em></a></td>
559     <td valign="top">text encoding type</td>
560   </tr>
561
562   <tr>
563     <td valign="top"><a href="../www/command-line-options.html#endian">-endian <em class="option">type</em></a></td>
564     <td valign="top">endianness (MSB or LSB) of the image</td>
565   </tr>
566
567   <tr>
568     <td valign="top"><a href="../www/command-line-options.html#enhance">-enhance</a></td>
569     <td valign="top">apply a digital filter to enhance a noisy image</td>
570   </tr>
571
572   <tr>
573     <td valign="top"><a href="../www/command-line-options.html#equalize">-equalize</a></td>
574     <td valign="top">perform histogram equalization to an image</td>
575   </tr>
576
577   <tr>
578     <td valign="top"><a href="../www/command-line-options.html#evaluate">-evaluate <em class="option">operator value</em></a></td>
579     <td valign="top">evaluate an arithmetic, relational, or logical expression</td>
580   </tr>
581
582   <tr>
583     <td valign="top"><a href="../www/command-line-options.html#evaluate-sequence">-evaluate-sequence <em class="option">operator</em></a></td>
584     <td valign="top">evaluate an arithmetic, relational, or logical expression for an image sequence</td>
585   </tr>
586
587   <tr>
588     <td valign="top"><a href="../www/command-line-options.html#extent">-extent <em class="option">geometry</em></a></td>
589     <td valign="top">set the image size</td>
590   </tr>
591
592   <tr>
593     <td valign="top"><a href="../www/command-line-options.html#extract">-extract <em class="option">geometry</em></a></td>
594     <td valign="top">extract area from image</td>
595   </tr>
596
597   <tr>
598     <td valign="top"><a href="../www/command-line-options.html#family">-family <em class="option">name</em></a></td>
599     <td valign="top">render text with this font family</td>
600   </tr>
601
602   <tr>
603     <td valign="top"><a href="../www/command-line-options.html#fft">-fft</a></td>
604     <td valign="top">implments the discrete Fourier transform (DFT)</td>
605   </tr>
606
607   <tr>
608     <td valign="top"><a href="../www/command-line-options.html#fill">-fill <em class="option">color</em></a></td>
609     <td valign="top">color to use when filling a graphic primitive</td>
610   </tr>
611
612   <tr>
613     <td valign="top"><a href="../www/command-line-options.html#filter">-filter <em class="option">type</em></a></td>
614     <td valign="top">use this filter when resizing an image</td>
615   </tr>
616
617   <tr>
618     <td valign="top"><a href="../www/command-line-options.html#flatten">-flatten</a></td>
619     <td valign="top">flatten a sequence of images</td>
620   </tr>
621
622   <tr>
623     <td valign="top"><a href="../www/command-line-options.html#flip">-flip</a></td>
624     <td valign="top">flip image in the vertical direction</td>
625   </tr>
626
627   <tr>
628     <td valign="top"><a href="../www/command-line-options.html#floodfill">-floodfill <em class="option">geometry color</em></a></td>
629     <td valign="top">floodfill the image with color</td>
630   </tr>
631
632   <tr>
633     <td valign="top"><a href="../www/command-line-options.html#flop">-flop</a></td>
634     <td valign="top">flop image in the horizontal direction</td>
635   </tr>
636
637   <tr>
638     <td valign="top"><a href="../www/command-line-options.html#font">-font <em class="option">name</em></a></td>
639     <td valign="top">render text with this font</td>
640   </tr>
641
642   <tr>
643     <td valign="top"><a href="../www/command-line-options.html#format_identify_">-format <em class="option">string</em></a></td>
644     <td valign="top">output formatted image characteristics</td>
645   </tr>
646
647   <tr>
648     <td valign="top"><a href="../www/command-line-options.html#frame">-frame <em class="option">geometry</em></a></td>
649     <td valign="top">surround image with an ornamental border</td>
650   </tr>
651
652   <tr>
653     <td valign="top"><a href="../www/command-line-options.html#function">-function <em class="option">name</em></a></td>
654     <td valign="top">apply a function to the image</td>
655   </tr>
656
657   <tr>
658     <td valign="top"><a href="../www/command-line-options.html#fuzz">-fuzz <em class="option">distance</em></a></td>
659     <td valign="top">colors within this distance are considered equal</td>
660   </tr>
661
662   <tr>
663     <td valign="top"><a href="../www/command-line-options.html#fx">-fx <em class="option">expression</em></a></td>
664     <td valign="top">apply mathematical expression to an image channel(s)</td>
665   </tr>
666
667   <tr>
668     <td valign="top"><a href="../www/command-line-options.html#gamma">-gamma <em class="option">value</em></a></td>
669     <td valign="top">level of gamma correction</td>
670   </tr>
671
672   <tr>
673     <td valign="top"><a href="../www/command-line-options.html#gaussian-blur">-gaussian-blur <em class="option">geometry</em></a></td>
674     <td valign="top">reduce image noise and reduce detail levels</td>
675   </tr>
676
677   <tr>
678     <td valign="top"><a href="../www/command-line-options.html#geometry">-geometry <em class="option">geometry</em></a></td>
679     <td valign="top">preferred size or location of the image</td>
680   </tr>
681
682   <tr>
683     <td valign="top"><a href="../www/command-line-options.html#gravity">-gravity <em class="option">type</em></a></td>
684     <td valign="top">horizontal and vertical text placement</td>
685   </tr>
686
687   <tr>
688     <td valign="top"><a href="../www/command-line-options.html#green-primary">-green-primary <em class="option">point</em></a></td>
689     <td valign="top">chromaticity green primary point</td>
690   </tr>
691
692   <tr>
693     <td valign="top"><a href="../www/command-line-options.html#help">-help</a></td>
694     <td valign="top">print program options</td>
695   </tr>
696
697   <tr>
698     <td valign="top"><a href="../www/command-line-options.html#identify">-identify</a></td>
699     <td valign="top">identify the format and characteristics of the image</td>
700   </tr>
701
702   <tr>
703     <td valign="top"><a href="../www/command-line-options.html#ift">-ift</a></td>
704     <td valign="top">implements the inverse discrete Fourier transform (DFT)</td>
705   </tr>
706
707   <tr>
708     <td valign="top"><a href="../www/command-line-options.html#implode">-implode <em class="option">amount</em></a></td>
709     <td valign="top">implode image pixels about the center</td>
710   </tr>
711
712   <tr>
713     <td valign="top"><a href="../www/command-line-options.html#insert">-insert <em class="option">index</em></a></td>
714     <td valign="top">insert last image into the image sequence</td>
715   </tr>
716
717   <tr>
718     <td valign="top"><a href="../www/command-line-options.html#intent">-intent <em class="option">type</em></a></td>
719     <td valign="top">type of rendering intent when managing the image color</td>
720   </tr>
721
722   <tr>
723     <td valign="top"><a href="../www/command-line-options.html#interlace">-interlace <em class="option">type</em></a></td>
724     <td valign="top">type of image interlacing scheme</td>
725   </tr>
726
727   <tr>
728     <td valign="top"><a href="../www/command-line-options.html#interline-spacing">-interline-spacing <em class="option">value</em></a></td>
729     <td valign="top">the space between two text lines</td>
730   </tr>
731
732   <tr>
733     <td valign="top"><a href="../www/command-line-options.html#interpolate">-interpolate <em class="option">method</em></a></td>
734     <td valign="top">pixel color interpolation method</td>
735   </tr>
736
737   <tr>
738     <td valign="top"><a href="../www/command-line-options.html#interword-spacing">-interword-spacing <em class="option">value</em></a></td>
739     <td valign="top">the space between two words</td>
740   </tr>
741
742   <tr>
743     <td valign="top"><a href="../www/command-line-options.html#kerning">-kerning <em class="option">value</em></a></td>
744     <td valign="top">the space between two characters</td>
745   </tr>
746
747   <tr>
748     <td valign="top"><a href="../www/command-line-options.html#label">-label <em class="option">string</em></a></td>
749     <td valign="top">assign a label to an image</td>
750   </tr>
751
752   <tr>
753     <td valign="top"><a href="../www/command-line-options.html#lat">-lat <em class="option">geometry</em></a></td>
754     <td valign="top">local adaptive thresholding</td>
755   </tr>
756
757   <tr>
758     <td valign="top"><a href="../www/command-line-options.html#layers">-layers <em class="option">method</em></a></td>
759     <td valign="top">optimize or compare image layers</td>
760   </tr>
761
762   <tr>
763     <td valign="top"><a href="../www/command-line-options.html#level">-level <em class="option">value</em></a></td>
764     <td valign="top">adjust the level of image contrast</td>
765   </tr>
766
767   <tr>
768     <td valign="top"><a href="../www/command-line-options.html#limit">-limit <em class="option">type value</em></a></td>
769     <td valign="top">pixel cache resource limit</td>
770   </tr>
771
772   <tr>
773     <td valign="top"><a href="../www/command-line-options.html#linear-stretch">-linear-stretch <em class="option">geometry</em></a></td>
774     <td valign="top">linear with saturation histogram stretch</td>
775   </tr>
776
777   <tr>
778     <td valign="top"><a href="../www/command-line-options.html#liquid-rescale">-liquid-rescale <em class="option">geometry</em></a></td>
779     <td valign="top">rescale image with seam-carving</td>
780   </tr>
781
782   <tr>
783     <td valign="top"><a href="../www/command-line-options.html#log">-log <em class="option">format</em></a></td>
784     <td valign="top">format of debugging information</td>
785   </tr>
786
787   <tr>
788     <td valign="top"><a href="../www/command-line-options.html#loop">-loop <em class="option">iterations</em></a></td>
789     <td valign="top">add Netscape loop extension to your GIF animation</td>
790   </tr>
791
792   <tr>
793     <td valign="top"><a href="../www/command-line-options.html#mask">-mask <em class="option">filename</em></a></td>
794     <td valign="top">associate a mask with the image</td>
795   </tr>
796
797   <tr>
798     <td valign="top"><a href="../www/command-line-options.html#mattecolor">-mattecolor <em class="option">color</em></a></td>
799     <td valign="top">frame color</td>
800   </tr>
801
802   <tr>
803     <td valign="top"><a href="../www/command-line-options.html#median">-median <em class="option">radius</em></a></td>
804     <td valign="top">apply a median filter to the image</td>
805   </tr>
806
807   <tr>
808     <td valign="top"><a href="../www/command-line-options.html#modulate">-modulate <em class="option">value</em></a></td>
809     <td valign="top">vary the brightness, saturation, and hue</td>
810   </tr>
811
812   <tr>
813     <td valign="top"><a href="../www/command-line-options.html#monitor">-monitor</a></td>
814     <td valign="top">monitor progress</td>
815   </tr>
816
817   <tr>
818     <td valign="top"><a href="../www/command-line-options.html#monochrome">-monochrome</a></td>
819     <td valign="top">transform image to black and white</td>
820   </tr>
821
822   <tr>
823     <td valign="top"><a href="../www/command-line-options.html#morph">-morph <em class="option">value</em></a></td>
824     <td valign="top">morph an image sequence</td>
825   </tr>
826
827   <tr>
828     <td valign="top"><a href="../www/command-line-options.html#morphology">-morphology <em class="option">method</em></a> <em class="option">kernel</em></td>
829     <td valign="top">apply a morphology method to the image</td>
830   </tr>
831
832   <tr>
833     <td valign="top"><a href="../www/command-line-options.html#motion-blur">-motion-blur <em class="option">geometry</em></a></td>
834     <td valign="top">simulate motion blur</td>
835   </tr>
836
837   <tr>
838     <td valign="top"><a href="../www/command-line-options.html#negate">-negate</a></td>
839     <td valign="top">replace each pixel with its complementary color </td>
840   </tr>
841
842   <tr>
843     <td valign="top"><a href="../www/command-line-options.html#noise">-noise <em class="option">radius</em></a></td>
844     <td valign="top">add or reduce noise in an image</td>
845   </tr>
846
847   <tr>
848     <td valign="top"><a href="../www/command-line-options.html#normalize">-normalize</a></td>
849     <td valign="top">transform image to span the full range of colors</td>
850   </tr>
851
852   <tr>
853     <td valign="top"><a href="../www/command-line-options.html#opaque">-opaque <em class="option">color</em></a></td>
854     <td valign="top">change this color to the fill color</td>
855   </tr>
856
857   <tr>
858     <td valign="top"><a href="../www/command-line-options.html#ordered-dither">-ordered-dither <em class="option">NxN</em></a></td>
859     <td valign="top">ordered dither the image</td>
860   </tr>
861
862   <tr>
863     <td valign="top"><a href="../www/command-line-options.html#orient">-orient <em class="option">type</em></a></td>
864     <td valign="top">image orientation</td>
865   </tr>
866
867   <tr>
868     <td valign="top"><a href="../www/command-line-options.html#page">-page <em class="option">geometry</em></a></td>
869     <td valign="top">size and location of an image canvas (setting)</td>
870   </tr>
871
872   <tr>
873     <td valign="top"><a href="../www/command-line-options.html#paint">-paint <em class="option">radius</em></a></td>
874     <td valign="top">simulate an oil painting</td>
875   </tr>
876
877   <tr>
878     <td valign="top"><a href="../www/command-line-options.html#ping">-ping</a></td>
879     <td valign="top">efficiently determine image attributes</td>
880   </tr>
881
882   <tr>
883     <td valign="top"><a href="../www/command-line-options.html#pointsize">-pointsize <em class="option">value</em></a></td>
884     <td valign="top">font point size</td>
885   </tr>
886
887   <tr>
888     <td valign="top"><a href="../www/command-line-options.html#polaroid">-polaroid <em class="option">angle</em></a></td>
889     <td valign="top">simulate a Polaroid picture</td>
890   </tr>
891
892   <tr>
893     <td valign="top"><a href="../www/command-line-options.html#posterize">-posterize <em class="option">levels</em></a></td>
894     <td valign="top">reduce the image to a limited number of color levels</td>
895   </tr>
896
897   <tr>
898     <td valign="top"><a href="../www/command-line-options.html#precision">-precision <em class="option">value</em></a></td>
899     <td valign="top">set the maximum number of significant digits to be printed</td>
900   </tr>
901
902   <tr>
903     <td valign="top"><a href="../www/command-line-options.html#preview">-preview <em class="option">type</em></a></td>
904     <td valign="top">image preview type</td>
905   </tr>
906
907   <tr>
908     <td valign="top"><a href="../www/command-line-options.html#print">-print <em class="option">string</em></a></td>
909     <td valign="top">interpret string and print to console</td>
910   </tr>
911
912   <tr>
913     <td valign="top"><a href="../www/command-line-options.html#process">-process <em class="option">image-filter</em></a></td>
914     <td valign="top">process the image with a custom image filter</td>
915   </tr>
916
917   <tr>
918     <td valign="top"><a href="../www/command-line-options.html#profile">-profile <em class="option">filename</em></a></td>
919     <td valign="top">add, delete, or apply an image profile</td>
920   </tr>
921
922   <tr>
923     <td valign="top"><a href="../www/command-line-options.html#quality">-quality <em class="option">value</em></a></td>
924     <td valign="top">JPEG/MIFF/PNG compression level</td>
925   </tr>
926
927   <tr>
928     <td valign="top"><a href="../www/command-line-options.html#quantize">-quantize <em class="option">colorspace</em></a></td>
929     <td valign="top">reduce image colors in this colorspace</td>
930   </tr>
931
932   <tr>
933     <td valign="top"><a href="../www/command-line-options.html#quiet">-quiet</a></td>
934     <td valign="top">suppress all warning messages</td>
935   </tr>
936
937   <tr>
938     <td valign="top"><a href="../www/command-line-options.html#radial-blur">-radial-blur <em class="option">angle</em></a></td>
939     <td valign="top">radial blur the image</td>
940   </tr>
941
942   <tr>
943     <td valign="top"><a href="../www/command-line-options.html#raise">-raise <em class="option">value</em></a></td>
944     <td valign="top">lighten/darken image edges to create a 3-D effect</td>
945   </tr>
946
947   <tr>
948     <td valign="top"><a href="../www/command-line-options.html#random-threshold">-random-threshold <em class="option">low,high</em></a></td>
949     <td valign="top">random threshold the image</td>
950   </tr>
951
952   <tr>
953     <td valign="top"><a href="../www/command-line-options.html#red-primary">-red-primary <em class="option">point</em></a></td>
954     <td valign="top">chromaticity red primary point</td>
955   </tr>
956
957   <tr>
958     <td valign="top"><a href="../www/command-line-options.html#regard-warnings">-regard-warnings</a></td>
959     <td valign="top">pay attention to warning messages.</td>
960   </tr>
961
962   <tr>
963     <td valign="top"><a href="../www/command-line-options.html#region">-region <em class="option">geometry</em></a></td>
964     <td valign="top">apply options to a portion of the image</td>
965   </tr>
966
967   <tr>
968     <td valign="top"><a href="../www/command-line-options.html#remap">-remap <em class="option">filename</em></a></td>
969     <td valign="top">transform image colors to match this set of colors</td>
970   </tr>
971
972   <tr>
973     <td valign="top"><a href="../www/command-line-options.html#render">-render</a></td>
974     <td valign="top">render vector graphics</td>
975   </tr>
976
977   <tr>
978     <td valign="top"><a href="../www/command-line-options.html#repage">-repage <em class="option">geometry</em></a></td>
979     <td valign="top">size and location of an image canvas</td>
980   </tr>
981
982   <tr>
983     <td valign="top"><a href="../www/command-line-options.html#resample">-resample <em class="option">geometry</em></a></td>
984     <td valign="top">change the resolution of an image</td>
985   </tr>
986
987   <tr>
988     <td valign="top"><a href="../www/command-line-options.html#resize">-resize <em class="option">geometry</em></a></td>
989     <td valign="top">resize the image</td>
990   </tr>
991
992   <tr>
993     <td valign="top"><a href="../www/command-line-options.html#respect-parentheses">-respect-parentheses</a></td>
994     <td valign="top">settings remain in effect until parenthesis boundary.</td>
995   </tr>
996
997   <tr>
998     <td valign="top"><a href="../www/command-line-options.html#roll">-roll <em class="option">geometry</em></a></td>
999     <td valign="top">roll an image vertically or horizontally</td>
1000   </tr>
1001
1002   <tr>
1003     <td valign="top"><a href="../www/command-line-options.html#rotate">-rotate <em class="option">degrees</em></a></td>
1004     <td valign="top">apply Paeth rotation to the image</td>
1005   </tr>
1006
1007   <tr>
1008     <td valign="top"><a href="../www/command-line-options.html#sample">-sample <em class="option">geometry</em></a></td>
1009     <td valign="top">scale image with pixel sampling</td>
1010   </tr>
1011
1012   <tr>
1013     <td valign="top"><a href="../www/command-line-options.html#sampling-factor">-sampling-factor <em class="option">geometry</em></a></td>
1014     <td valign="top">horizontal and vertical sampling factor</td>
1015   </tr>
1016
1017   <tr>
1018     <td valign="top"><a href="../www/command-line-options.html#scale">-scale <em class="option">geometry</em></a></td>
1019     <td valign="top">scale the image</td>
1020   </tr>
1021
1022   <tr>
1023     <td valign="top"><a href="../www/command-line-options.html#scene">-scene <em class="option">value</em></a></td>
1024     <td valign="top">image scene number</td>
1025   </tr>
1026
1027   <tr>
1028     <td valign="top"><a href="../www/command-line-options.html#seed">-seed <em class="option">value</em></a></td>
1029     <td valign="top">seed a new sequence of pseudo-random numbers</td>
1030   </tr>
1031
1032   <tr>
1033     <td valign="top"><a href="../www/command-line-options.html#segment">-segment <em class="option">values</em></a></td>
1034     <td valign="top">segment an image</td>
1035   </tr>
1036
1037   <tr>
1038     <td valign="top"><a href="../www/command-line-options.html#threshold">-selective-blur <em class="option">geometry</em></a></td>
1039     <td valign="top">selectively blur pixels within a contrast threshold</td>
1040   </tr>
1041
1042   <tr>
1043     <td valign="top"><a href="../www/command-line-options.html#separate">-separate</a></td>
1044     <td valign="top">separate an image channel into a grayscale image</td>
1045   </tr>
1046
1047   <tr>
1048     <td valign="top"><a href="../www/command-line-options.html#sepia-tone">-sepia-tone <em class="option">threshold</em></a></td>
1049     <td valign="top">simulate a sepia-toned photo</td>
1050   </tr>
1051
1052   <tr>
1053     <td valign="top"><a href="../www/command-line-options.html#set">-set <em class="option">attribute value</em></a></td>
1054     <td valign="top">set an image attribute</td>
1055   </tr>
1056
1057   <tr>
1058     <td valign="top"><a href="../www/command-line-options.html#shade">-shade <em class="option">degrees</em></a></td>
1059     <td valign="top">shade the image using a distant light source</td>
1060   </tr>
1061
1062   <tr>
1063     <td valign="top"><a href="../www/command-line-options.html#shadow">-shadow <em class="option">geometry</em></a></td>
1064     <td valign="top">simulate an image shadow</td>
1065   </tr>
1066
1067   <tr>
1068     <td valign="top"><a href="../www/command-line-options.html#sharpen">-sharpen <em class="option">geometry</em></a></td>
1069     <td valign="top">sharpen the image</td>
1070   </tr>
1071
1072   <tr>
1073     <td valign="top"><a href="../www/command-line-options.html#shave">-shave <em class="option">geometry</em></a></td>
1074     <td valign="top">shave pixels from the image edges</td>
1075   </tr>
1076
1077   <tr>
1078     <td valign="top"><a href="../www/command-line-options.html#shear">-shear <em class="option">geometry</em></a></td>
1079     <td valign="top">slide one edge of the image along the X or Y axis</td>
1080   </tr>
1081
1082   <tr>
1083     <td valign="top"><a href="../www/command-line-options.html#sigmoidal">-sigmoidal-contrast <em class="option">geometry</em></a></td>
1084     <td valign="top">increase the contrast without saturating highlights or shadows</td>
1085   </tr>
1086
1087   <tr>
1088     <td valign="top"><a href="../www/command-line-options.html#size">-size <em class="option">geometry</em></a></td>
1089     <td valign="top">width and height of image</td>
1090   </tr>
1091
1092   <tr>
1093     <td valign="top"><a href="../www/command-line-options.html#sketch">-sketch <em class="option">geometry</em></a></td>
1094     <td valign="top">simulate a pencil sketch</td>
1095   </tr>
1096
1097   <tr>
1098     <td valign="top"><a href="../www/command-line-options.html#solarize">-solarize <em class="option">threshold</em></a></td>
1099     <td valign="top">negate all pixels above the threshold level</td>
1100   </tr>
1101
1102   <tr>
1103     <td valign="top"><a href="../www/command-line-options.html#splice">-splice <em class="option">geometry</em></a></td>
1104     <td valign="top">splice the background color into the image</td>
1105   </tr>
1106
1107   <tr>
1108     <td valign="top"><a href="../www/command-line-options.html#spread">-spread <em class="option">radius</em></a></td>
1109     <td valign="top">displace image pixels by a random amount</td>
1110   </tr>
1111
1112   <tr>
1113     <td valign="top"><a href="../www/command-line-options.html#strip">-strip</a></td>
1114     <td valign="top">strip image of all profiles and comments</td>
1115   </tr>
1116
1117   <tr>
1118     <td valign="top"><a href="../www/command-line-options.html#stroke">-stroke <em class="option">color</em></a></td>
1119     <td valign="top">graphic primitive stroke color</td>
1120   </tr>
1121
1122   <tr>
1123     <td valign="top"><a href="../www/command-line-options.html#strokewidth">-strokewidth <em class="option">value</em></a></td>
1124     <td valign="top">graphic primitive stroke width</td>
1125   </tr>
1126
1127   <tr>
1128     <td valign="top"><a href="../www/command-line-options.html#stretch">-stretch <em class="option">type</em></a></td>
1129     <td valign="top">render text with this font stretch</td>
1130   </tr>
1131
1132   <tr>
1133     <td valign="top"><a href="../www/command-line-options.html#style">-style <em class="option">type</em></a></td>
1134     <td valign="top">render text with this font style</td>
1135   </tr>
1136
1137   <tr>
1138     <td valign="top"><a href="../www/command-line-options.html#swap">-swap <em class="option">indexes</em></a></td>
1139     <td valign="top">swap two images in the image sequence</td>
1140   </tr>
1141
1142   <tr>
1143     <td valign="top"><a href="../www/command-line-options.html#swirl">-swirl <em class="option">degrees</em></a></td>
1144     <td valign="top">swirl image pixels about the center</td>
1145   </tr>
1146
1147   <tr>
1148     <td valign="top"><a href="../www/command-line-options.html#synchronize">-synchronize</a></td>
1149     <td valign="top">synchronize image to storage device</td>
1150   </tr>
1151
1152   <tr>
1153     <td valign="top"><a href="../www/command-line-options.html#taint">-taint</a></td>
1154     <td valign="top">mark the image as modified</td>
1155   </tr>
1156
1157   <tr>
1158     <td valign="top"><a href="../www/command-line-options.html#texture">-texture <em class="option">filename</em></a></td>
1159     <td valign="top">name of texture to tile onto the image background</td>
1160   </tr>
1161
1162   <tr>
1163     <td valign="top"><a href="../www/command-line-options.html#threshold">-threshold <em class="option">value</em></a></td>
1164     <td valign="top">threshold the image</td>
1165   </tr>
1166
1167   <tr>
1168     <td valign="top"><a href="../www/command-line-options.html#thumbnail">-thumbnail <em class="option">geometry</em></a></td>
1169     <td valign="top">create a thumbnail of the image</td>
1170   </tr>
1171
1172   <tr>
1173     <td valign="top"><a href="../www/command-line-options.html#tile">-tile <em class="option">filename</em></a></td>
1174     <td valign="top">tile image when filling a graphic primitive</td>
1175   </tr>
1176
1177   <tr>
1178     <td valign="top"><a href="../www/command-line-options.html#tile-offset">-tile-offset <em class="option">geometry</em></a></td>
1179     <td valign="top">set the image tile offset</td>
1180   </tr>
1181
1182   <tr>
1183     <td valign="top"><a href="../www/command-line-options.html#tint">-tint <em class="option">value</em></a></td>
1184     <td valign="top">tint the image with the fill color</td>
1185   </tr>
1186
1187   <tr>
1188     <td valign="top"><a href="../www/command-line-options.html#transform">-transform</a></td>
1189     <td valign="top">affine transform image</td>
1190   </tr>
1191
1192   <tr>
1193     <td valign="top"><a href="../www/command-line-options.html#transparent">-transparent <em class="option">color</em></a></td>
1194     <td valign="top">make this color transparent within the image</td>
1195   </tr>
1196
1197   <tr>
1198     <td valign="top"><a href="../www/command-line-options.html#transparent-color">-transparent-color <em class="option">color</em></a></td>
1199     <td valign="top">transparent color</td>
1200   </tr>
1201
1202   <tr>
1203     <td valign="top"><a href="../www/command-line-options.html#transpose">-transpose</a></td>
1204     <td valign="top">flip image in the vertical direction and rotate 90 degrees</td>
1205   </tr>
1206
1207   <tr>
1208     <td valign="top"><a href="../www/command-line-options.html#transverse">-transverse</a></td>
1209     <td valign="top">flop image in the horizontal direction and rotate 270 degrees</td>
1210   </tr>
1211
1212   <tr>
1213     <td valign="top"><a href="../www/command-line-options.html#treedepth">-treedepth <em class="option">value</em></a></td>
1214     <td valign="top">color tree depth</td>
1215   </tr>
1216
1217   <tr>
1218     <td valign="top"><a href="../www/command-line-options.html#trim">-trim</a></td>
1219     <td valign="top">trim image edges</td>
1220   </tr>
1221
1222   <tr>
1223     <td valign="top"><a href="../www/command-line-options.html#type">-type <em class="option">type</em></a></td>
1224     <td valign="top">image type</td>
1225   </tr>
1226
1227   <tr>
1228     <td valign="top"><a href="../www/command-line-options.html#undercolor">-undercolor <em class="option">color</em></a></td>
1229     <td valign="top">annotation bounding box color</td>
1230   </tr>
1231
1232   <tr>
1233     <td valign="top"><a href="../www/command-line-options.html#unique-colors">-unique-colors</a></td>
1234     <td valign="top">discard all but one of any pixel color.</td>
1235   </tr>
1236
1237   <tr>
1238     <td valign="top"><a href="../www/command-line-options.html#units">-units <em class="option">type</em></a></td>
1239     <td valign="top">the units of image resolution</td>
1240   </tr>
1241
1242   <tr>
1243     <td valign="top"><a href="../www/command-line-options.html#unsharp">-unsharp <em class="option">geometry</em></a></td>
1244     <td valign="top">sharpen the image</td>
1245   </tr>
1246
1247   <tr>
1248     <td valign="top"><a href="../www/command-line-options.html#verbose">-verbose</a></td>
1249     <td valign="top">print detailed information about the image</td>
1250   </tr>
1251
1252   <tr>
1253     <td valign="top"><a href="../www/command-line-options.html#version">-version</a></td>
1254     <td valign="top">print version information</td>
1255   </tr>
1256
1257   <tr>
1258     <td valign="top"><a href="../www/command-line-options.html#view">-view</a></td>
1259     <td valign="top">FlashPix viewing transforms</td>
1260   </tr>
1261
1262   <tr>
1263     <td valign="top"><a href="../www/command-line-options.html#vignette">-vignette <em class="option">geometry</em></a></td>
1264     <td valign="top">soften the edges of the image in vignette style</td>
1265   </tr>
1266
1267   <tr>
1268     <td valign="top"><a href="../www/command-line-options.html#virtual-pixel">-virtual-pixel <em class="option">method</em></a></td>
1269     <td valign="top">access method for pixels outside the boundaries of the image</td>
1270   </tr>
1271
1272   <tr>
1273     <td valign="top"><a href="../www/command-line-options.html#wave">-wave <em class="option">geometry</em></a></td>
1274     <td valign="top">alter an image along a sine wave</td>
1275   </tr>
1276
1277   <tr>
1278     <td valign="top"><a href="../www/command-line-options.html#weight">-weight <em class="option">type</em></a></td>
1279     <td valign="top">render text with this font weight</td>
1280   </tr>
1281
1282   <tr>
1283     <td valign="top"><a href="../www/command-line-options.html#white-point">-white-point <em class="option">point</em></a></td>
1284     <td valign="top">chromaticity white point</td>
1285   </tr>
1286
1287   <tr>
1288     <td valign="top"><a href="../www/command-line-options.html#white-threshold">-white-threshold <em class="option">value</em></a></td>
1289     <td valign="top">force all pixels above the threshold into white</td>
1290   </tr>
1291
1292   <tr>
1293     <td valign="top"><a href="../www/command-line-options.html#write">-write <em class="option">filename</em></a></td>
1294     <td valign="top">write images to this file</td>
1295   </tr>
1296
1297   </tbody>
1298 </table>
1299
1300 </div>
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