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199 \r
200 <h1>ImageMagick Convert Command-line Tool</h1>
201 <p class="navigation-index">[<a href="#usage">Example Usage</a> &bull; <a href="#options">Option Summary</a>]</p>
202
203 <div class="doc-section">
204 <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>
205 </div>
206
207 <h2><a id="usage"></a>Example Usage</h2>
208 <div class="doc-section">
209
210 <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>
211
212 <p class='crt'><span class="crtprompt"> $magick&gt; </span><span class='crtin'>convert rose.jpg rose.png</span></p>
213 <p>Next, we reduce the image size before it is written to the PNG format:</p>
214
215 <p class='crt'><span class="crtprompt"> $magick&gt; </span><span class='crtin'>convert rose.jpg -resize 50% rose.png</span></p>
216 <p class="image">
217   <a href="../images/rose.jpg">
218   <img src="../images/rose.jpg" width="70" height="46" alt="rose" />
219   </a>
220   <img style="margin-top:13px; margin-bottom:13px;" src="../images/right.gif" width="20" height="20" alt="==>" />
221   <a href="../images/rose.png">
222   <img style="margin-top:11px; margin-bottom:12px;" src="../images/rose.png" width="35" height="23" alt="rose" />
223   </a>
224 </p>
225
226 <p>You can combine multiple image-processing operations to produce complex results:</p>
227
228 <p class='crt'><span class="crtprompt"> $magick&gt; </span><span class='crtin'>convert -size 320x85 xc:transparent -font Bookman-DemiItalic -pointsize 72 \ <br/>
229 -draw "text 25,60 'Magick'" -channel RGBA -blur 0x6 -fill darkred -stroke magenta \ <br/>
230 -draw "text 20,55 'Magick'" fuzzy-magick.png</span></p>
231 <p class="image">
232   <a href="../images/fuzzy-magick.png"><img src="../images/fuzzy-magick.png" width="320" height="85" alt="fuzzy-magick" /></a>
233 </p>
234
235 <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>
236
237 </div>
238
239 <h2><a id="options"></a>Option Summary</h2>
240 <div class="doc-section">
241
242 <p>The <kbd>convert</kbd> command recognizes these options.  Click on an option to get more details about how that option works.</p>
243
244 <table class="doc">
245   <tbody>
246   <tr>
247     <th align="left">Option</th>
248     <th align="left">Description</th>
249   </tr>
250
251   <tr>
252     <td valign="top"><a href="../www/command-line-options.html#adaptive-blur">-adaptive-blur <em class="option">geometry</em></a></td>
253     <td valign="top">adaptively blur pixels; decrease effect near edges</td>
254   </tr>
255
256   <tr>
257     <td valign="top"><a href="../www/command-line-options.html#adaptive-resize">-adaptive-resize <em class="option">geometry</em></a></td>
258     <td valign="top">adaptively resize image with data dependent triangulation.</td>
259   </tr>
260
261   <tr>
262     <td valign="top"><a href="../www/command-line-options.html#adaptive-sharpen">-adaptive-sharpen <em class="option">geometry</em></a></td>
263     <td valign="top">adaptively sharpen pixels; increase effect near edges</td>
264   </tr>
265
266   <tr>
267     <td valign="top"><a href="../www/command-line-options.html#adjoin">-adjoin</a></td>
268     <td valign="top">join images into a single multi-image file</td>
269   </tr>
270
271   <tr>
272     <td valign="top"><a href="../www/command-line-options.html#affine">-affine <em class="option">matrix</em></a></td>
273     <td valign="top">affine transform matrix</td>
274   </tr>
275
276   <tr>
277     <td valign="top"><a href="../www/command-line-options.html#alpha">-alpha</a></td>
278     <td valign="top">on, activate, off, deactivate, set, opaque, copy",
279 transparent, extract, background, or shape the alpha channel</td>
280   </tr>
281
282   <tr>
283     <td valign="top"><a href="../www/command-line-options.html#annotate">-annotate <em class="option">geometry text</em></a></td>
284     <td valign="top">annotate the image with text</td>
285   </tr>
286
287   <tr>
288     <td valign="top"><a href="../www/command-line-options.html#antialias">-antialias</a></td>
289     <td valign="top">remove pixel-aliasing</td>
290   </tr>
291
292   <tr>
293     <td valign="top"><a href="../www/command-line-options.html#append">-append</a></td>
294     <td valign="top">append an image sequence</td>
295   </tr>
296
297   <tr>
298     <td valign="top"><a href="../www/command-line-options.html#authenticate">-authenticate <em class="option">value</em></a></td>
299     <td valign="top">decipher image with this password</td>
300   </tr>
301
302   <tr>
303     <td valign="top"><a href="../www/command-line-options.html#auto-gamma">-auto-gamma</a></td>
304     <td valign="top">automagically adjust gamma level of image</td>
305   </tr>
306
307   <tr>
308     <td valign="top"><a href="../www/command-line-options.html#auto-level">-auto-level</a></td>
309     <td valign="top">automagically adjust color levels of image</td>
310   </tr>
311
312   <tr>
313     <td valign="top"><a href="../www/command-line-options.html#auto-orient">-auto-orient</a></td>
314     <td valign="top">automagically orient image</td>
315   </tr>
316
317   <tr>
318     <td valign="top"><a href="../www/command-line-options.html#background">-background <em class="option">color</em></a></td>
319     <td valign="top">background color</td>
320   </tr>
321
322   <tr>
323     <td valign="top"><a href="../www/command-line-options.html#bench">-bench <em class="option">iterations</em></a></td>
324     <td valign="top">measure performance</td>
325   </tr>
326
327   <tr>
328     <td valign="top"><a href="../www/command-line-options.html#bias">-bias <em class="option">value</em></a></td>
329     <td valign="top">add bias when convolving an image</td>
330   </tr>
331
332   <tr>
333     <td valign="top"><a href="../www/command-line-options.html#black-threshold">-black-threshold <em class="option">value</em></a></td>
334     <td valign="top">force all pixels below the threshold into black</td>
335   </tr>
336
337   <tr>
338     <td valign="top"><a href="../www/command-line-options.html#blue-primary">-blue-primary <em class="option">point</em></a></td>
339     <td valign="top">chromaticity blue primary point</td>
340   </tr>
341
342   <tr>
343     <td valign="top"><a href="../www/command-line-options.html#blue-shift">-blue-shift <em class="option">factor</em></a></td>
344     <td valign="top">simulate a scene at nighttime in the moonlight</td>
345   </tr>
346
347   <tr>
348     <td valign="top"><a href="../www/command-line-options.html#blur">-blur <em class="option">geometry</em></a></td>
349     <td valign="top">reduce image noise and reduce detail levels</td>
350   </tr>
351
352   <tr>
353     <td valign="top"><a href="../www/command-line-options.html#border">-border <em class="option">geometry</em></a></td>
354     <td valign="top">surround image with a border of color</td>
355   </tr>
356
357   <tr>
358     <td valign="top"><a href="../www/command-line-options.html#bordercolor">-bordercolor <em class="option">color</em></a></td>
359     <td valign="top">border color</td>
360   </tr>
361
362   <tr>
363     <td valign="top"><a href="../www/command-line-options.html#brightness-contrast">-brightness-contrast <em class="option">geometry</em></a></td>
364     <td valign="top">improve brightness / contrast of the image</td>
365   </tr>
366
367   <tr>
368     <td valign="top"><a href="../www/command-line-options.html#caption">-caption <em class="option">string</em></a></td>
369     <td valign="top">assign a caption to an image</td>
370   </tr>
371
372   <tr>
373     <td valign="top"><a href="../www/command-line-options.html#cdl">-cdl <em class="option">filename</em></a></td>
374     <td valign="top">color correct with a color decision list</td>
375   </tr>
376
377   <tr>
378     <td valign="top"><a href="../www/command-line-options.html#channel">-channel <em class="option">type</em></a></td>
379     <td valign="top">apply option to select image channels</td>
380   </tr>
381
382   <tr>
383     <td valign="top"><a href="../www/command-line-options.html#charcoal">-charcoal <em class="option">radius</em></a></td>
384     <td valign="top">simulate a charcoal drawing</td>
385   </tr>
386
387   <tr>
388     <td valign="top"><a href="../www/command-line-options.html#chop">-chop <em class="option">geometry</em></a></td>
389     <td valign="top">remove pixels from the image interior</td>
390   </tr>
391
392   <tr>
393     <td valign="top"><a href="../www/command-line-options.html#clamp">-clamp</a></td>
394     <td valign="top">restrict colors from 0 to the quantum depth</td>
395   </tr>
396
397   <tr>
398     <td valign="top"><a href="../www/command-line-options.html#clip">-clip</a></td>
399     <td valign="top">clip along the first path from the 8BIM profile</td>
400   </tr>
401
402   <tr>
403     <td valign="top"><a href="../www/command-line-options.html#clip-mask">-clip-mask</a> <em class="option">filename</em></td>
404     <td valign="top">associate clip mask with the image</td>
405   </tr>
406
407   <tr>
408     <td valign="top"><a href="../www/command-line-options.html#clip-path">-clip-path <em class="option">id</em></a></td>
409     <td valign="top">clip along a named path from the 8BIM profile</td>
410   </tr>
411
412   <tr>
413     <td valign="top"><a href="../www/command-line-options.html#clone">-clone <em class="option">index</em></a></td>
414     <td valign="top">clone an image</td>
415   </tr>
416
417   <tr>
418     <td valign="top"><a href="../www/command-line-options.html#clut">-clut</a></td>
419     <td valign="top">apply a color lookup table to the image</td>
420   </tr>
421
422   <tr>
423     <td valign="top"><a href="../www/command-line-options.html#contrast-stretch">-contrast-stretch <em class="option">geometry</em></a></td>
424     <td valign="top">improve the contrast in an image by `stretching' the range of intensity value</td>
425   </tr>
426
427   <tr>
428     <td valign="top"><a href="../www/command-line-options.html#coalesce">-coalesce</a></td>
429     <td valign="top">merge a sequence of images</td>
430   </tr>
431
432   <tr>
433     <td valign="top"><a href="../www/command-line-options.html#colorize">-colorize <em class="option">value</em></a></td>
434     <td valign="top">colorize the image with the fill color</td>
435   </tr>
436
437   <tr>
438     <td valign="top"><a href="../www/command-line-options.html#color-matrix">-color-matrix <em class="option">matrix</em></a></td>
439     <td valign="top">apply color correction to the image.</td>
440   </tr>
441
442   <tr>
443     <td valign="top"><a href="../www/command-line-options.html#colors">-colors <em class="option">value</em></a></td>
444     <td valign="top">preferred number of colors in the image</td>
445   </tr>
446
447   <tr>
448     <td valign="top"><a href="../www/command-line-options.html#colorspace">-colorspace <em class="option">type</em></a></td>
449     <td valign="top">set image colorspace</td>
450   </tr>
451
452   <tr>
453     <td valign="top"><a href="../www/command-line-options.html#combine">-combine</a></td>
454     <td valign="top">combine a sequence of images</td>
455   </tr>
456
457   <tr>
458     <td valign="top"><a href="../www/command-line-options.html#comment">-comment <em class="option">string</em></a></td>
459     <td valign="top">annotate image with comment</td>
460   </tr>
461
462   <tr>
463     <td valign="top"><a href="../www/command-line-options.html#compose">-compose <em class="option">operator</em></a></td>
464     <td valign="top">set image composite operator</td>
465   </tr>
466
467   <tr>
468     <td valign="top"><a href="../www/command-line-options.html#composite">-composite</a></td>
469     <td valign="top">composite image</td>
470   </tr>
471
472   <tr>
473     <td valign="top"><a href="../www/command-line-options.html#compress">-compress <em class="option">type</em></a></td>
474     <td valign="top">image compression type</td>
475   </tr>
476
477   <tr>
478     <td valign="top"><a href="../www/command-line-options.html#contrast">-contrast</a></td>
479     <td valign="top">enhance or reduce the image contrast</td>
480   </tr>
481
482   <tr>
483     <td valign="top"><a href="../www/command-line-options.html#convolve">-convolve <em class="option">coefficients</em></a></td>
484     <td valign="top">apply a convolution kernel to the image</td>
485   </tr>
486
487   <tr>
488     <td valign="top"><a href="../www/command-line-options.html#crop">-crop <em class="option">geometry</em></a></td>
489     <td valign="top">crop the image</td>
490   </tr>
491
492   <tr>
493     <td valign="top"><a href="../www/command-line-options.html#cycle">-cycle <em class="option">amount</em></a></td>
494     <td valign="top">cycle the image colormap</td>
495   </tr>
496
497   <tr>
498     <td valign="top"><a href="../www/command-line-options.html#decipher">-decipher <em class="option">filename</em></a></td>
499     <td valign="top">convert cipher pixels to plain</td>
500   </tr>
501
502   <tr>
503     <td valign="top"><a href="../www/command-line-options.html#debug">-debug <em class="option">events</em></a></td>
504     <td valign="top">display copious debugging information</td>
505   </tr>
506
507   <tr>
508     <td valign="top"><a href="../www/command-line-options.html#define">-define <em class="option">format:option</em></a></td>
509     <td valign="top">define one or more image format options</td>
510   </tr>
511
512   <tr>
513     <td valign="top"><a href="../www/command-line-options.html#deconstruct">-deconstruct</a></td>
514     <td valign="top">break down an image sequence into constituent parts</td>
515   </tr>
516
517   <tr>
518     <td valign="top"><a href="../www/command-line-options.html#delay">-delay <em class="option">value</em></a></td>
519     <td valign="top">display the next image after pausing</td>
520   </tr>
521
522   <tr>
523     <td valign="top"><a href="../www/command-line-options.html#delete">-delete <em class="option">index</em></a></td>
524     <td valign="top">delete the image from the image sequence</td>
525   </tr>
526
527   <tr>
528     <td valign="top"><a href="../www/command-line-options.html#density">-density <em class="option">geometry</em></a></td>
529     <td valign="top">horizontal and vertical density of the image</td>
530   </tr>
531
532   <tr>
533     <td valign="top"><a href="../www/command-line-options.html#depth">-depth <em class="option">value</em></a></td>
534     <td valign="top">image depth</td>
535   </tr>
536
537   <tr>
538     <td valign="top"><a href="../www/command-line-options.html#despeckle">-despeckle</a></td>
539     <td valign="top">reduce the speckles within an image</td>
540   </tr>
541
542   <tr>
543     <td valign="top"><a href="../www/command-line-options.html#direction">-direction <em class="option">type</em></a></td>
544     <td valign="top">render text right-to-left or left-to-right</td>
545   </tr>
546
547   <tr>
548     <td valign="top"><a href="../www/command-line-options.html#display">-display <em class="option">server</em></a></td>
549     <td valign="top">get image or font from this X server</td>
550   </tr>
551
552   <tr>
553     <td valign="top"><a href="../www/command-line-options.html#dispose">-dispose <em class="option">method</em></a></td>
554     <td valign="top">layer disposal method</td>
555   </tr>
556
557   <tr>
558     <td valign="top"><a href="../www/command-line-options.html#distort">-distort <em class="option">type coefficients</em></a></td>
559     <td valign="top">distort image</td>
560   </tr>
561
562   <tr>
563     <td valign="top"><a href="../www/command-line-options.html#dither">-dither  <em class="option">method</em></a></td>
564     <td valign="top">apply error diffusion to image</td>
565   </tr>
566
567   <tr>
568     <td valign="top"><a href="../www/command-line-options.html#draw">-draw <em class="option">string</em></a></td>
569     <td valign="top">annotate the image with a graphic primitive</td>
570   </tr>
571
572   <tr>
573     <td valign="top"><a href="../www/command-line-options.html#duplicate">-duplicate <em class="option">count,indexes</em></a></td>
574     <td valign="top">duplicate an image one or more times</td>
575   </tr>
576
577   <tr>
578     <td valign="top"><a href="../www/command-line-options.html#edge">-edge <em class="option">radius</em></a></td>
579     <td valign="top">apply a filter to detect edges in the image</td>
580   </tr>
581
582   <tr>
583     <td valign="top"><a href="../www/command-line-options.html#emboss">-emboss <em class="option">radius</em></a></td>
584     <td valign="top">emboss an image</td>
585   </tr>
586
587   <tr>
588     <td valign="top"><a href="../www/command-line-options.html#encipher">-encipher <em class="option">filename</em></a></td>
589     <td valign="top">convert plain pixels to cipher pixels</td>
590   </tr>
591
592   <tr>
593     <td valign="top"><a href="../www/command-line-options.html#encoding">-encoding <em class="option">type</em></a></td>
594     <td valign="top">text encoding type</td>
595   </tr>
596
597   <tr>
598     <td valign="top"><a href="../www/command-line-options.html#endian">-endian <em class="option">type</em></a></td>
599     <td valign="top">endianness (MSB or LSB) of the image</td>
600   </tr>
601
602   <tr>
603     <td valign="top"><a href="../www/command-line-options.html#enhance">-enhance</a></td>
604     <td valign="top">apply a digital filter to enhance a noisy image</td>
605   </tr>
606
607   <tr>
608     <td valign="top"><a href="../www/command-line-options.html#equalize">-equalize</a></td>
609     <td valign="top">perform histogram equalization to an image</td>
610   </tr>
611
612   <tr>
613     <td valign="top"><a href="../www/command-line-options.html#evaluate">-evaluate <em class="option">operator value</em></a></td>
614     <td valign="top">evaluate an arithmetic, relational, or logical expression</td>
615   </tr>
616
617   <tr>
618     <td valign="top"><a href="../www/command-line-options.html#evaluate-sequence">-evaluate-sequence <em class="option">operator</em></a></td>
619     <td valign="top">evaluate an arithmetic, relational, or logical expression for an image sequence</td>
620   </tr>
621
622   <tr>
623     <td valign="top"><a href="../www/command-line-options.html#extent">-extent <em class="option">geometry</em></a></td>
624     <td valign="top">set the image size</td>
625   </tr>
626
627   <tr>
628     <td valign="top"><a href="../www/command-line-options.html#extract">-extract <em class="option">geometry</em></a></td>
629     <td valign="top">extract area from image</td>
630   </tr>
631
632   <tr>
633     <td valign="top"><a href="../www/command-line-options.html#family">-family <em class="option">name</em></a></td>
634     <td valign="top">render text with this font family</td>
635   </tr>
636
637   <tr>
638     <td valign="top"><a href="../www/command-line-options.html#fft">-fft</a></td>
639     <td valign="top">implments the discrete Fourier transform (DFT)</td>
640   </tr>
641
642   <tr>
643     <td valign="top"><a href="../www/command-line-options.html#fill">-fill <em class="option">color</em></a></td>
644     <td valign="top">color to use when filling a graphic primitive</td>
645   </tr>
646
647   <tr>
648     <td valign="top"><a href="../www/command-line-options.html#filter">-filter <em class="option">type</em></a></td>
649     <td valign="top">use this filter when resizing an image</td>
650   </tr>
651
652   <tr>
653     <td valign="top"><a href="../www/command-line-options.html#flatten">-flatten</a></td>
654     <td valign="top">flatten a sequence of images</td>
655   </tr>
656
657   <tr>
658     <td valign="top"><a href="../www/command-line-options.html#flip">-flip</a></td>
659     <td valign="top">flip image in the vertical direction</td>
660   </tr>
661
662   <tr>
663     <td valign="top"><a href="../www/command-line-options.html#floodfill">-floodfill <em class="option">geometry color</em></a></td>
664     <td valign="top">floodfill the image with color</td>
665   </tr>
666
667   <tr>
668     <td valign="top"><a href="../www/command-line-options.html#flop">-flop</a></td>
669     <td valign="top">flop image in the horizontal direction</td>
670   </tr>
671
672   <tr>
673     <td valign="top"><a href="../www/command-line-options.html#font">-font <em class="option">name</em></a></td>
674     <td valign="top">render text with this font</td>
675   </tr>
676
677   <tr>
678     <td valign="top"><a href="../www/command-line-options.html#format_identify_">-format <em class="option">string</em></a></td>
679     <td valign="top">output formatted image characteristics</td>
680   </tr>
681
682   <tr>
683     <td valign="top"><a href="../www/command-line-options.html#frame">-frame <em class="option">geometry</em></a></td>
684     <td valign="top">surround image with an ornamental border</td>
685   </tr>
686
687   <tr>
688     <td valign="top"><a href="../www/command-line-options.html#function">-function <em class="option">name</em></a></td>
689     <td valign="top">apply a function to the image</td>
690   </tr>
691
692   <tr>
693     <td valign="top"><a href="../www/command-line-options.html#fuzz">-fuzz <em class="option">distance</em></a></td>
694     <td valign="top">colors within this distance are considered equal</td>
695   </tr>
696
697   <tr>
698     <td valign="top"><a href="../www/command-line-options.html#fx">-fx <em class="option">expression</em></a></td>
699     <td valign="top">apply mathematical expression to an image channel(s)</td>
700   </tr>
701
702   <tr>
703     <td valign="top"><a href="../www/command-line-options.html#gamma">-gamma <em class="option">value</em></a></td>
704     <td valign="top">level of gamma correction</td>
705   </tr>
706
707   <tr>
708     <td valign="top"><a href="../www/command-line-options.html#gaussian-blur">-gaussian-blur <em class="option">geometry</em></a></td>
709     <td valign="top">reduce image noise and reduce detail levels</td>
710   </tr>
711
712   <tr>
713     <td valign="top"><a href="../www/command-line-options.html#geometry">-geometry <em class="option">geometry</em></a></td>
714     <td valign="top">preferred size or location of the image</td>
715   </tr>
716
717   <tr>
718     <td valign="top"><a href="../www/command-line-options.html#gravity">-gravity <em class="option">type</em></a></td>
719     <td valign="top">horizontal and vertical text placement</td>
720   </tr>
721
722   <tr>
723     <td valign="top"><a href="../www/command-line-options.html#green-primary">-green-primary <em class="option">point</em></a></td>
724     <td valign="top">chromaticity green primary point</td>
725   </tr>
726
727   <tr>
728     <td valign="top"><a href="../www/command-line-options.html#help">-help</a></td>
729     <td valign="top">print program options</td>
730   </tr>
731
732   <tr>
733     <td valign="top"><a href="../www/command-line-options.html#identify">-identify</a></td>
734     <td valign="top">identify the format and characteristics of the image</td>
735   </tr>
736
737   <tr>
738     <td valign="top"><a href="../www/command-line-options.html#ift">-ift</a></td>
739     <td valign="top">implements the inverse discrete Fourier transform (DFT)</td>
740   </tr>
741
742   <tr>
743     <td valign="top"><a href="../www/command-line-options.html#implode">-implode <em class="option">amount</em></a></td>
744     <td valign="top">implode image pixels about the center</td>
745   </tr>
746
747   <tr>
748     <td valign="top"><a href="../www/command-line-options.html#insert">-insert <em class="option">index</em></a></td>
749     <td valign="top">insert last image into the image sequence</td>
750   </tr>
751
752   <tr>
753     <td valign="top"><a href="../www/command-line-options.html#intent">-intent <em class="option">type</em></a></td>
754     <td valign="top">type of rendering intent when managing the image color</td>
755   </tr>
756
757   <tr>
758     <td valign="top"><a href="../www/command-line-options.html#interlace">-interlace <em class="option">type</em></a></td>
759     <td valign="top">type of image interlacing scheme</td>
760   </tr>
761
762   <tr>
763     <td valign="top"><a href="../www/command-line-options.html#interline-spacing">-interline-spacing <em class="option">value</em></a></td>
764     <td valign="top">the space between two text lines</td>
765   </tr>
766
767   <tr>
768     <td valign="top"><a href="../www/command-line-options.html#interpolate">-interpolate <em class="option">method</em></a></td>
769     <td valign="top">pixel color interpolation method</td>
770   </tr>
771
772   <tr>
773     <td valign="top"><a href="../www/command-line-options.html#interword-spacing">-interword-spacing <em class="option">value</em></a></td>
774     <td valign="top">the space between two words</td>
775   </tr>
776
777   <tr>
778     <td valign="top"><a href="../www/command-line-options.html#kerning">-kerning <em class="option">value</em></a></td>
779     <td valign="top">the space between two characters</td>
780   </tr>
781
782   <tr>
783     <td valign="top"><a href="../www/command-line-options.html#label">-label <em class="option">string</em></a></td>
784     <td valign="top">assign a label to an image</td>
785   </tr>
786
787   <tr>
788     <td valign="top"><a href="../www/command-line-options.html#lat">-lat <em class="option">geometry</em></a></td>
789     <td valign="top">local adaptive thresholding</td>
790   </tr>
791
792   <tr>
793     <td valign="top"><a href="../www/command-line-options.html#layers">-layers <em class="option">method</em></a></td>
794     <td valign="top">optimize or compare image layers</td>
795   </tr>
796
797   <tr>
798     <td valign="top"><a href="../www/command-line-options.html#level">-level <em class="option">value</em></a></td>
799     <td valign="top">adjust the level of image contrast</td>
800   </tr>
801
802   <tr>
803     <td valign="top"><a href="../www/command-line-options.html#limit">-limit <em class="option">type value</em></a></td>
804     <td valign="top">pixel cache resource limit</td>
805   </tr>
806
807   <tr>
808     <td valign="top"><a href="../www/command-line-options.html#linear-stretch">-linear-stretch <em class="option">geometry</em></a></td>
809     <td valign="top">linear with saturation histogram stretch</td>
810   </tr>
811
812   <tr>
813     <td valign="top"><a href="../www/command-line-options.html#liquid-rescale">-liquid-rescale <em class="option">geometry</em></a></td>
814     <td valign="top">rescale image with seam-carving</td>
815   </tr>
816
817   <tr>
818     <td valign="top"><a href="../www/command-line-options.html#log">-log <em class="option">format</em></a></td>
819     <td valign="top">format of debugging information</td>
820   </tr>
821
822   <tr>
823     <td valign="top"><a href="../www/command-line-options.html#loop">-loop <em class="option">iterations</em></a></td>
824     <td valign="top">add Netscape loop extension to your GIF animation</td>
825   </tr>
826
827   <tr>
828     <td valign="top"><a href="../www/command-line-options.html#mask">-mask <em class="option">filename</em></a></td>
829     <td valign="top">associate a mask with the image</td>
830   </tr>
831
832   <tr>
833     <td valign="top"><a href="../www/command-line-options.html#mattecolor">-mattecolor <em class="option">color</em></a></td>
834     <td valign="top">frame color</td>
835   </tr>
836
837   <tr>
838     <td valign="top"><a href="../www/command-line-options.html#median">-median <em class="option">radius</em></a></td>
839     <td valign="top">apply a median filter to the image</td>
840   </tr>
841
842   <tr>
843     <td valign="top"><a href="../www/command-line-options.html#mode">-mode <em class="option">radius</em></a></td>
844     <td valign="top">make each pixel the 'predominate color' of the neighborhood</td>
845   </tr>
846
847   <tr>
848     <td valign="top"><a href="../www/command-line-options.html#modulate">-modulate <em class="option">value</em></a></td>
849     <td valign="top">vary the brightness, saturation, and hue</td>
850   </tr>
851
852   <tr>
853     <td valign="top"><a href="../www/command-line-options.html#monitor">-monitor</a></td>
854     <td valign="top">monitor progress</td>
855   </tr>
856
857   <tr>
858     <td valign="top"><a href="../www/command-line-options.html#monochrome">-monochrome</a></td>
859     <td valign="top">transform image to black and white</td>
860   </tr>
861
862   <tr>
863     <td valign="top"><a href="../www/command-line-options.html#morph">-morph <em class="option">value</em></a></td>
864     <td valign="top">morph an image sequence</td>
865   </tr>
866
867   <tr>
868     <td valign="top"><a href="../www/command-line-options.html#morphology">-morphology <em class="option">method</em></a> <em class="option">kernel</em></td>
869     <td valign="top">apply a morphology method to the image</td>
870   </tr>
871
872   <tr>
873     <td valign="top"><a href="../www/command-line-options.html#motion-blur">-motion-blur <em class="option">geometry</em></a></td>
874     <td valign="top">simulate motion blur</td>
875   </tr>
876
877   <tr>
878     <td valign="top"><a href="../www/command-line-options.html#negate">-negate</a></td>
879     <td valign="top">replace each pixel with its complementary color </td>
880   </tr>
881
882   <tr>
883     <td valign="top"><a href="../www/command-line-options.html#noise">-noise <em class="option">radius</em></a></td>
884     <td valign="top">add or reduce noise in an image</td>
885   </tr>
886
887   <tr>
888     <td valign="top"><a href="../www/command-line-options.html#normalize">-normalize</a></td>
889     <td valign="top">transform image to span the full range of colors</td>
890   </tr>
891
892   <tr>
893     <td valign="top"><a href="../www/command-line-options.html#opaque">-opaque <em class="option">color</em></a></td>
894     <td valign="top">change this color to the fill color</td>
895   </tr>
896
897   <tr>
898     <td valign="top"><a href="../www/command-line-options.html#ordered-dither">-ordered-dither <em class="option">NxN</em></a></td>
899     <td valign="top">ordered dither the image</td>
900   </tr>
901
902   <tr>
903     <td valign="top"><a href="../www/command-line-options.html#orient">-orient <em class="option">type</em></a></td>
904     <td valign="top">image orientation</td>
905   </tr>
906
907   <tr>
908     <td valign="top"><a href="../www/command-line-options.html#page">-page <em class="option">geometry</em></a></td>
909     <td valign="top">size and location of an image canvas (setting)</td>
910   </tr>
911
912   <tr>
913     <td valign="top"><a href="../www/command-line-options.html#paint">-paint <em class="option">radius</em></a></td>
914     <td valign="top">simulate an oil painting</td>
915   </tr>
916
917   <tr>
918     <td valign="top"><a href="../www/command-line-options.html#ping">-ping</a></td>
919     <td valign="top">efficiently determine image attributes</td>
920   </tr>
921
922   <tr>
923     <td valign="top"><a href="../www/command-line-options.html#pointsize">-pointsize <em class="option">value</em></a></td>
924     <td valign="top">font point size</td>
925   </tr>
926
927   <tr>
928     <td valign="top"><a href="../www/command-line-options.html#polaroid">-polaroid <em class="option">angle</em></a></td>
929     <td valign="top">simulate a Polaroid picture</td>
930   </tr>
931
932   <tr>
933     <td valign="top"><a href="../www/command-line-options.html#posterize">-posterize <em class="option">levels</em></a></td>
934     <td valign="top">reduce the image to a limited number of color levels</td>
935   </tr>
936
937   <tr>
938     <td valign="top"><a href="../www/command-line-options.html#precision">-precision <em class="option">value</em></a></td>
939     <td valign="top">set the maximum number of significant digits to be printed</td>
940   </tr>
941
942   <tr>
943     <td valign="top"><a href="../www/command-line-options.html#preview">-preview <em class="option">type</em></a></td>
944     <td valign="top">image preview type</td>
945   </tr>
946
947   <tr>
948     <td valign="top"><a href="../www/command-line-options.html#print">-print <em class="option">string</em></a></td>
949     <td valign="top">interpret string and print to console</td>
950   </tr>
951
952   <tr>
953     <td valign="top"><a href="../www/command-line-options.html#process">-process <em class="option">image-filter</em></a></td>
954     <td valign="top">process the image with a custom image filter</td>
955   </tr>
956
957   <tr>
958     <td valign="top"><a href="../www/command-line-options.html#profile">-profile <em class="option">filename</em></a></td>
959     <td valign="top">add, delete, or apply an image profile</td>
960   </tr>
961
962   <tr>
963     <td valign="top"><a href="../www/command-line-options.html#quality">-quality <em class="option">value</em></a></td>
964     <td valign="top">JPEG/MIFF/PNG compression level</td>
965   </tr>
966
967   <tr>
968     <td valign="top"><a href="../www/command-line-options.html#quantize">-quantize <em class="option">colorspace</em></a></td>
969     <td valign="top">reduce image colors in this colorspace</td>
970   </tr>
971
972   <tr>
973     <td valign="top"><a href="../www/command-line-options.html#quiet">-quiet</a></td>
974     <td valign="top">suppress all warning messages</td>
975   </tr>
976
977   <tr>
978     <td valign="top"><a href="../www/command-line-options.html#radial-blur">-radial-blur <em class="option">angle</em></a></td>
979     <td valign="top">radial blur the image</td>
980   </tr>
981
982   <tr>
983     <td valign="top"><a href="../www/command-line-options.html#raise">-raise <em class="option">value</em></a></td>
984     <td valign="top">lighten/darken image edges to create a 3-D effect</td>
985   </tr>
986
987   <tr>
988     <td valign="top"><a href="../www/command-line-options.html#random-threshold">-random-threshold <em class="option">low,high</em></a></td>
989     <td valign="top">random threshold the image</td>
990   </tr>
991
992   <tr>
993     <td valign="top"><a href="../www/command-line-options.html#red-primary">-red-primary <em class="option">point</em></a></td>
994     <td valign="top">chromaticity red primary point</td>
995   </tr>
996
997   <tr>
998     <td valign="top"><a href="../www/command-line-options.html#regard-warnings">-regard-warnings</a></td>
999     <td valign="top">pay attention to warning messages.</td>
1000   </tr>
1001
1002   <tr>
1003     <td valign="top"><a href="../www/command-line-options.html#region">-region <em class="option">geometry</em></a></td>
1004     <td valign="top">apply options to a portion of the image</td>
1005   </tr>
1006
1007   <tr>
1008     <td valign="top"><a href="../www/command-line-options.html#remap">-remap <em class="option">filename</em></a></td>
1009     <td valign="top">transform image colors to match this set of colors</td>
1010   </tr>
1011
1012   <tr>
1013     <td valign="top"><a href="../www/command-line-options.html#render">-render</a></td>
1014     <td valign="top">render vector graphics</td>
1015   </tr>
1016
1017   <tr>
1018     <td valign="top"><a href="../www/command-line-options.html#repage">-repage <em class="option">geometry</em></a></td>
1019     <td valign="top">size and location of an image canvas</td>
1020   </tr>
1021
1022   <tr>
1023     <td valign="top"><a href="../www/command-line-options.html#resample">-resample <em class="option">geometry</em></a></td>
1024     <td valign="top">change the resolution of an image</td>
1025   </tr>
1026
1027   <tr>
1028     <td valign="top"><a href="../www/command-line-options.html#resize">-resize <em class="option">geometry</em></a></td>
1029     <td valign="top">resize the image</td>
1030   </tr>
1031
1032   <tr>
1033     <td valign="top"><a href="../www/command-line-options.html#respect-parentheses">-respect-parentheses</a></td>
1034     <td valign="top">settings remain in effect until parenthesis boundary.</td>
1035   </tr>
1036
1037   <tr>
1038     <td valign="top"><a href="../www/command-line-options.html#roll">-roll <em class="option">geometry</em></a></td>
1039     <td valign="top">roll an image vertically or horizontally</td>
1040   </tr>
1041
1042   <tr>
1043     <td valign="top"><a href="../www/command-line-options.html#rotate">-rotate <em class="option">degrees</em></a></td>
1044     <td valign="top">apply Paeth rotation to the image</td>
1045   </tr>
1046
1047   <tr>
1048     <td valign="top"><a href="../www/command-line-options.html#sample">-sample <em class="option">geometry</em></a></td>
1049     <td valign="top">scale image with pixel sampling</td>
1050   </tr>
1051
1052   <tr>
1053     <td valign="top"><a href="../www/command-line-options.html#sampling-factor">-sampling-factor <em class="option">geometry</em></a></td>
1054     <td valign="top">horizontal and vertical sampling factor</td>
1055   </tr>
1056
1057   <tr>
1058     <td valign="top"><a href="../www/command-line-options.html#scale">-scale <em class="option">geometry</em></a></td>
1059     <td valign="top">scale the image</td>
1060   </tr>
1061
1062   <tr>
1063     <td valign="top"><a href="../www/command-line-options.html#scene">-scene <em class="option">value</em></a></td>
1064     <td valign="top">image scene number</td>
1065   </tr>
1066
1067   <tr>
1068     <td valign="top"><a href="../www/command-line-options.html#seed">-seed <em class="option">value</em></a></td>
1069     <td valign="top">seed a new sequence of pseudo-random numbers</td>
1070   </tr>
1071
1072   <tr>
1073     <td valign="top"><a href="../www/command-line-options.html#segment">-segment <em class="option">values</em></a></td>
1074     <td valign="top">segment an image</td>
1075   </tr>
1076
1077   <tr>
1078     <td valign="top"><a href="../www/command-line-options.html#threshold">-selective-blur <em class="option">geometry</em></a></td>
1079     <td valign="top">selectively blur pixels within a contrast threshold</td>
1080   </tr>
1081
1082   <tr>
1083     <td valign="top"><a href="../www/command-line-options.html#separate">-separate</a></td>
1084     <td valign="top">separate an image channel into a grayscale image</td>
1085   </tr>
1086
1087   <tr>
1088     <td valign="top"><a href="../www/command-line-options.html#sepia-tone">-sepia-tone <em class="option">threshold</em></a></td>
1089     <td valign="top">simulate a sepia-toned photo</td>
1090   </tr>
1091
1092   <tr>
1093     <td valign="top"><a href="../www/command-line-options.html#set">-set <em class="option">attribute value</em></a></td>
1094     <td valign="top">set an image attribute</td>
1095   </tr>
1096
1097   <tr>
1098     <td valign="top"><a href="../www/command-line-options.html#shade">-shade <em class="option">degrees</em></a></td>
1099     <td valign="top">shade the image using a distant light source</td>
1100   </tr>
1101
1102   <tr>
1103     <td valign="top"><a href="../www/command-line-options.html#shadow">-shadow <em class="option">geometry</em></a></td>
1104     <td valign="top">simulate an image shadow</td>
1105   </tr>
1106
1107   <tr>
1108     <td valign="top"><a href="../www/command-line-options.html#sharpen">-sharpen <em class="option">geometry</em></a></td>
1109     <td valign="top">sharpen the image</td>
1110   </tr>
1111
1112   <tr>
1113     <td valign="top"><a href="../www/command-line-options.html#shave">-shave <em class="option">geometry</em></a></td>
1114     <td valign="top">shave pixels from the image edges</td>
1115   </tr>
1116
1117   <tr>
1118     <td valign="top"><a href="../www/command-line-options.html#shear">-shear <em class="option">geometry</em></a></td>
1119     <td valign="top">slide one edge of the image along the X or Y axis</td>
1120   </tr>
1121
1122   <tr>
1123     <td valign="top"><a href="../www/command-line-options.html#sigmoidal">-sigmoidal-contrast <em class="option">geometry</em></a></td>
1124     <td valign="top">increase the contrast without saturating highlights or shadows</td>
1125   </tr>
1126
1127   <tr>
1128     <td valign="top"><a href="../www/command-line-options.html#smush">-smush <em class="option">offset</em></a></td>
1129     <td valign="top">smush an image sequence together</td>
1130   </tr>
1131
1132   <tr>
1133     <td valign="top"><a href="../www/command-line-options.html#size">-size <em class="option">geometry</em></a></td>
1134     <td valign="top">width and height of image</td>
1135   </tr>
1136
1137   <tr>
1138     <td valign="top"><a href="../www/command-line-options.html#sketch">-sketch <em class="option">geometry</em></a></td>
1139     <td valign="top">simulate a pencil sketch</td>
1140   </tr>
1141
1142   <tr>
1143     <td valign="top"><a href="../www/command-line-options.html#solarize">-solarize <em class="option">threshold</em></a></td>
1144     <td valign="top">negate all pixels above the threshold level</td>
1145   </tr>
1146
1147   <tr>
1148     <td valign="top"><a href="../www/command-line-options.html#splice">-splice <em class="option">geometry</em></a></td>
1149     <td valign="top">splice the background color into the image</td>
1150   </tr>
1151
1152   <tr>
1153     <td valign="top"><a href="../www/command-line-options.html#spread">-spread <em class="option">radius</em></a></td>
1154     <td valign="top">displace image pixels by a random amount</td>
1155   </tr>
1156
1157   <tr>
1158     <td valign="top"><a href="../www/command-line-options.html#statistic">-statistic <em class="option">type</em> <em class="option">geometry</em></a></td>
1159     <td valign="top">replace each pixel with corresponding statistic from the neighborhood</td>
1160   </tr>
1161
1162   <tr>
1163     <td valign="top"><a href="../www/command-line-options.html#strip">-strip</a></td>
1164     <td valign="top">strip image of all profiles and comments</td>
1165   </tr>
1166
1167   <tr>
1168     <td valign="top"><a href="../www/command-line-options.html#stroke">-stroke <em class="option">color</em></a></td>
1169     <td valign="top">graphic primitive stroke color</td>
1170   </tr>
1171
1172   <tr>
1173     <td valign="top"><a href="../www/command-line-options.html#strokewidth">-strokewidth <em class="option">value</em></a></td>
1174     <td valign="top">graphic primitive stroke width</td>
1175   </tr>
1176
1177   <tr>
1178     <td valign="top"><a href="../www/command-line-options.html#stretch">-stretch <em class="option">type</em></a></td>
1179     <td valign="top">render text with this font stretch</td>
1180   </tr>
1181
1182   <tr>
1183     <td valign="top"><a href="../www/command-line-options.html#style">-style <em class="option">type</em></a></td>
1184     <td valign="top">render text with this font style</td>
1185   </tr>
1186
1187   <tr>
1188     <td valign="top"><a href="../www/command-line-options.html#swap">-swap <em class="option">indexes</em></a></td>
1189     <td valign="top">swap two images in the image sequence</td>
1190   </tr>
1191
1192   <tr>
1193     <td valign="top"><a href="../www/command-line-options.html#swirl">-swirl <em class="option">degrees</em></a></td>
1194     <td valign="top">swirl image pixels about the center</td>
1195   </tr>
1196
1197   <tr>
1198     <td valign="top"><a href="../www/command-line-options.html#synchronize">-synchronize</a></td>
1199     <td valign="top">synchronize image to storage device</td>
1200   </tr>
1201
1202   <tr>
1203     <td valign="top"><a href="../www/command-line-options.html#taint">-taint</a></td>
1204     <td valign="top">mark the image as modified</td>
1205   </tr>
1206
1207   <tr>
1208     <td valign="top"><a href="../www/command-line-options.html#texture">-texture <em class="option">filename</em></a></td>
1209     <td valign="top">name of texture to tile onto the image background</td>
1210   </tr>
1211
1212   <tr>
1213     <td valign="top"><a href="../www/command-line-options.html#threshold">-threshold <em class="option">value</em></a></td>
1214     <td valign="top">threshold the image</td>
1215   </tr>
1216
1217   <tr>
1218     <td valign="top"><a href="../www/command-line-options.html#thumbnail">-thumbnail <em class="option">geometry</em></a></td>
1219     <td valign="top">create a thumbnail of the image</td>
1220   </tr>
1221
1222   <tr>
1223     <td valign="top"><a href="../www/command-line-options.html#tile">-tile <em class="option">filename</em></a></td>
1224     <td valign="top">tile image when filling a graphic primitive</td>
1225   </tr>
1226
1227   <tr>
1228     <td valign="top"><a href="../www/command-line-options.html#tile-offset">-tile-offset <em class="option">geometry</em></a></td>
1229     <td valign="top">set the image tile offset</td>
1230   </tr>
1231
1232   <tr>
1233     <td valign="top"><a href="../www/command-line-options.html#tint">-tint <em class="option">value</em></a></td>
1234     <td valign="top">tint the image with the fill color</td>
1235   </tr>
1236
1237   <tr>
1238     <td valign="top"><a href="../www/command-line-options.html#transform">-transform</a></td>
1239     <td valign="top">affine transform image</td>
1240   </tr>
1241
1242   <tr>
1243     <td valign="top"><a href="../www/command-line-options.html#transparent">-transparent <em class="option">color</em></a></td>
1244     <td valign="top">make this color transparent within the image</td>
1245   </tr>
1246
1247   <tr>
1248     <td valign="top"><a href="../www/command-line-options.html#transparent-color">-transparent-color <em class="option">color</em></a></td>
1249     <td valign="top">transparent color</td>
1250   </tr>
1251
1252   <tr>
1253     <td valign="top"><a href="../www/command-line-options.html#transpose">-transpose</a></td>
1254     <td valign="top">flip image in the vertical direction and rotate 90 degrees</td>
1255   </tr>
1256
1257   <tr>
1258     <td valign="top"><a href="../www/command-line-options.html#transverse">-transverse</a></td>
1259     <td valign="top">flop image in the horizontal direction and rotate 270 degrees</td>
1260   </tr>
1261
1262   <tr>
1263     <td valign="top"><a href="../www/command-line-options.html#treedepth">-treedepth <em class="option">value</em></a></td>
1264     <td valign="top">color tree depth</td>
1265   </tr>
1266
1267   <tr>
1268     <td valign="top"><a href="../www/command-line-options.html#trim">-trim</a></td>
1269     <td valign="top">trim image edges</td>
1270   </tr>
1271
1272   <tr>
1273     <td valign="top"><a href="../www/command-line-options.html#type">-type <em class="option">type</em></a></td>
1274     <td valign="top">image type</td>
1275   </tr>
1276
1277   <tr>
1278     <td valign="top"><a href="../www/command-line-options.html#undercolor">-undercolor <em class="option">color</em></a></td>
1279     <td valign="top">annotation bounding box color</td>
1280   </tr>
1281
1282   <tr>
1283     <td valign="top"><a href="../www/command-line-options.html#unique-colors">-unique-colors</a></td>
1284     <td valign="top">discard all but one of any pixel color.</td>
1285   </tr>
1286
1287   <tr>
1288     <td valign="top"><a href="../www/command-line-options.html#units">-units <em class="option">type</em></a></td>
1289     <td valign="top">the units of image resolution</td>
1290   </tr>
1291
1292   <tr>
1293     <td valign="top"><a href="../www/command-line-options.html#unsharp">-unsharp <em class="option">geometry</em></a></td>
1294     <td valign="top">sharpen the image</td>
1295   </tr>
1296
1297   <tr>
1298     <td valign="top"><a href="../www/command-line-options.html#verbose">-verbose</a></td>
1299     <td valign="top">print detailed information about the image</td>
1300   </tr>
1301
1302   <tr>
1303     <td valign="top"><a href="../www/command-line-options.html#version">-version</a></td>
1304     <td valign="top">print version information</td>
1305   </tr>
1306
1307   <tr>
1308     <td valign="top"><a href="../www/command-line-options.html#view">-view</a></td>
1309     <td valign="top">FlashPix viewing transforms</td>
1310   </tr>
1311
1312   <tr>
1313     <td valign="top"><a href="../www/command-line-options.html#vignette">-vignette <em class="option">geometry</em></a></td>
1314     <td valign="top">soften the edges of the image in vignette style</td>
1315   </tr>
1316
1317   <tr>
1318     <td valign="top"><a href="../www/command-line-options.html#virtual-pixel">-virtual-pixel <em class="option">method</em></a></td>
1319     <td valign="top">access method for pixels outside the boundaries of the image</td>
1320   </tr>
1321
1322   <tr>
1323     <td valign="top"><a href="../www/command-line-options.html#wave">-wave <em class="option">geometry</em></a></td>
1324     <td valign="top">alter an image along a sine wave</td>
1325   </tr>
1326
1327   <tr>
1328     <td valign="top"><a href="../www/command-line-options.html#weight">-weight <em class="option">type</em></a></td>
1329     <td valign="top">render text with this font weight</td>
1330   </tr>
1331
1332   <tr>
1333     <td valign="top"><a href="../www/command-line-options.html#white-point">-white-point <em class="option">point</em></a></td>
1334     <td valign="top">chromaticity white point</td>
1335   </tr>
1336
1337   <tr>
1338     <td valign="top"><a href="../www/command-line-options.html#white-threshold">-white-threshold <em class="option">value</em></a></td>
1339     <td valign="top">force all pixels above the threshold into white</td>
1340   </tr>
1341
1342   <tr>
1343     <td valign="top"><a href="../www/command-line-options.html#write">-write <em class="option">filename</em></a></td>
1344     <td valign="top">write images to this file</td>
1345   </tr>
1346
1347   </tbody>
1348 </table>
1349
1350 </div>
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