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174 <p class="navigation-index">[<a href="#usage">Example Usage</a> &bull; <a href="#options">Option Summary</a>]</p>
175
176 <div class="doc-section">
177 <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>
178 </div>
179
180 <h2><a name="usage"></a>Example Usage</h2>
181 <div class="doc-section">
182
183 <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>
184
185 <p class='crt'><span class="crtprompt"> $magick&gt; </span><span class='crtin'>convert rose.jpg rose.png</span></p>
186 <p>Next, we reduce the image size before it is written to the PNG format:</p>
187
188 <p class='crt'><span class="crtprompt"> $magick&gt; </span><span class='crtin'>convert rose.jpg -resize 50% rose.png</span></p>
189 <p class="image">
190   <a href="../images/rose.jpg">
191   <img src="../images/rose.jpg" width="70" height="46" alt="rose" />
192   </a>
193   <img style="margin-top:13px; margin-bottom:13px;" src="../images/right.gif" width="20" height="20" alt="==>" />
194   <a href="../images/rose.png">
195   <img style="margin-top:11px; margin-bottom:12px;" src="../images/rose.png" width="35" height="23" alt="rose" />
196   </a>
197 </p>
198
199 <p>You can combine multiple image-processing operations to produce complex results:</p>
200
201 <p class='crt'><span class="crtprompt"> $magick&gt; </span><span class='crtin'>convert -size 320x85 xc:transparent -font Bookman-DemiItalic -pointsize 72 \ <br/>
202 -draw "text 25,60 'Magick'" -channel RGBA -blur 0x6 -fill darkred -stroke magenta \ <br/>
203 -draw "text 20,55 'Magick'" fuzzy-magick.png</span></p>
204 <p class="image">
205   <a href="../images/fuzzy-magick.png"><img src="../images/fuzzy-magick.png" width="320" height="85" alt="fuzzy-magick" /></a>
206 </p>
207
208 <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>
209
210 </div>
211
212 <h2><a name="options"></a>Option Summary</h2>
213 <div class="doc-section">
214
215 <p>The <kbd>convert</kbd> command recognizes these options.  Click on an option to get more details about how that option works.</p>
216
217 <table class="doc">
218   <tbody>
219   <tr>
220     <th align="left">Option</th>
221     <th align="left">Description</th>
222   </tr>
223
224   <tr>
225     <td valign="top"><a href="../www/command-line-options.html#adaptive-blur">-adaptive-blur <em class="option">geometry</em></a></td>
226     <td valign="top">adaptively blur pixels; decrease effect near edges</td>
227   </tr>
228
229   <tr>
230     <td valign="top"><a href="../www/command-line-options.html#adaptive-resize">-adaptive-resize <em class="option">geometry</em></a></td>
231     <td valign="top">adaptively resize image with data dependent triangulation.</td>
232   </tr>
233
234   <tr>
235     <td valign="top"><a href="../www/command-line-options.html#adaptive-sharpen">-adaptive-sharpen <em class="option">geometry</em></a></td>
236     <td valign="top">adaptively sharpen pixels; increase effect near edges</td>
237   </tr>
238
239   <tr>
240     <td valign="top"><a href="../www/command-line-options.html#adjoin">-adjoin</a></td>
241     <td valign="top">join images into a single multi-image file</td>
242   </tr>
243
244   <tr>
245     <td valign="top"><a href="../www/command-line-options.html#affine">-affine <em class="option">matrix</em></a></td>
246     <td valign="top">affine transform matrix</td>
247   </tr>
248
249   <tr>
250     <td valign="top"><a href="../www/command-line-options.html#alpha">-alpha</a></td>
251     <td valign="top">on, activate, off, deactivate, set, opaque, copy",
252 transparent, extract, background, or shape the alpha channel</td>
253   </tr>
254
255   <tr>
256     <td valign="top"><a href="../www/command-line-options.html#annotate">-annotate <em class="option">geometry text</em></a></td>
257     <td valign="top">annotate the image with text</td>
258   </tr>
259
260   <tr>
261     <td valign="top"><a href="../www/command-line-options.html#antialias">-antialias</a></td>
262     <td valign="top">remove pixel-aliasing</td>
263   </tr>
264
265   <tr>
266     <td valign="top"><a href="../www/command-line-options.html#append">-append</a></td>
267     <td valign="top">append an image sequence</td>
268   </tr>
269
270   <tr>
271     <td valign="top"><a href="../www/command-line-options.html#authenticate">-authenticate <em class="option">value</em></a></td>
272     <td valign="top">decipher image with this password</td>
273   </tr>
274
275   <tr>
276     <td valign="top"><a href="../www/command-line-options.html#auto-gamma">-auto-gamma</a></td>
277     <td valign="top">automagically adjust gamma level of image</td>
278   </tr>
279
280   <tr>
281     <td valign="top"><a href="../www/command-line-options.html#auto-level">-auto-level</a></td>
282     <td valign="top">automagically adjust color levels of image</td>
283   </tr>
284
285   <tr>
286     <td valign="top"><a href="../www/command-line-options.html#auto-orient">-auto-orient</a></td>
287     <td valign="top">automagically orient image</td>
288   </tr>
289
290   <tr>
291     <td valign="top"><a href="../www/command-line-options.html#background">-background <em class="option">color</em></a></td>
292     <td valign="top">background color</td>
293   </tr>
294
295   <tr>
296     <td valign="top"><a href="../www/command-line-options.html#bench">-bench <em class="option">iterations</em></a></td>
297     <td valign="top">measure performance</td>
298   </tr>
299
300   <tr>
301     <td valign="top"><a href="../www/command-line-options.html#bias">-bias <em class="option">value</em></a></td>
302     <td valign="top">add bias when convolving an image</td>
303   </tr>
304
305   <tr>
306     <td valign="top"><a href="../www/command-line-options.html#black-threshold">-black-threshold <em class="option">value</em></a></td>
307     <td valign="top">force all pixels below the threshold into black</td>
308   </tr>
309
310   <tr>
311     <td valign="top"><a href="../www/command-line-options.html#blue-primary">-blue-primary <em class="option">point</em></a></td>
312     <td valign="top">chromaticity blue primary point</td>
313   </tr>
314
315   <tr>
316     <td valign="top"><a href="../www/command-line-options.html#blue-shift">-blue-shift <em class="option">factor</em></a></td>
317     <td valign="top">simulate a scene at nighttime in the moonlight</td>
318   </tr>
319
320   <tr>
321     <td valign="top"><a href="../www/command-line-options.html#blur">-blur <em class="option">geometry</em></a></td>
322     <td valign="top">reduce image noise and reduce detail levels</td>
323   </tr>
324
325   <tr>
326     <td valign="top"><a href="../www/command-line-options.html#border">-border <em class="option">geometry</em></a></td>
327     <td valign="top">surround image with a border of color</td>
328   </tr>
329
330   <tr>
331     <td valign="top"><a href="../www/command-line-options.html#bordercolor">-bordercolor <em class="option">color</em></a></td>
332     <td valign="top">border color</td>
333   </tr>
334
335   <tr>
336     <td valign="top"><a href="../www/command-line-options.html#brightness-contrast">-brightness-contrast <em class="option">geometry</em></a></td>
337     <td valign="top">improve brightness / contrast of the image</td>
338   </tr>
339
340   <tr>
341     <td valign="top"><a href="../www/command-line-options.html#caption">-caption <em class="option">string</em></a></td>
342     <td valign="top">assign a caption to an image</td>
343   </tr>
344
345   <tr>
346     <td valign="top"><a href="../www/command-line-options.html#cdl">-cdl <em class="option">filename</em></a></td>
347     <td valign="top">color correct with a color decision list</td>
348   </tr>
349
350   <tr>
351     <td valign="top"><a href="../www/command-line-options.html#channel">-channel <em class="option">type</em></a></td>
352     <td valign="top">apply option to select image channels</td>
353   </tr>
354
355   <tr>
356     <td valign="top"><a href="../www/command-line-options.html#charcoal">-charcoal <em class="option">radius</em></a></td>
357     <td valign="top">simulate a charcoal drawing</td>
358   </tr>
359
360   <tr>
361     <td valign="top"><a href="../www/command-line-options.html#chop">-chop <em class="option">geometry</em></a></td>
362     <td valign="top">remove pixels from the image interior</td>
363   </tr>
364
365   <tr>
366     <td valign="top"><a href="../www/command-line-options.html#clamp">-clamp</a></td>
367     <td valign="top">restrict colors from 0 to the quantum depth</td>
368   </tr>
369
370   <tr>
371     <td valign="top"><a href="../www/command-line-options.html#clip">-clip</a></td>
372     <td valign="top">clip along the first path from the 8BIM profile</td>
373   </tr>
374
375   <tr>
376     <td valign="top"><a href="../www/command-line-options.html#clip-mask">-clip-mask</a> <em class="option">filename</em></td>
377     <td valign="top">associate clip mask with the image</td>
378   </tr>
379
380   <tr>
381     <td valign="top"><a href="../www/command-line-options.html#clip-path">-clip-path <em class="option">id</em></a></td>
382     <td valign="top">clip along a named path from the 8BIM profile</td>
383   </tr>
384
385   <tr>
386     <td valign="top"><a href="../www/command-line-options.html#clone">-clone <em class="option">index</em></a></td>
387     <td valign="top">clone an image</td>
388   </tr>
389
390   <tr>
391     <td valign="top"><a href="../www/command-line-options.html#clut">-clut</a></td>
392     <td valign="top">apply a color lookup table to the image</td>
393   </tr>
394
395   <tr>
396     <td valign="top"><a href="../www/command-line-options.html#contrast-stretch">-contrast-stretch <em class="option">geometry</em></a></td>
397     <td valign="top">improve the contrast in an image by `stretching' the range of intensity value</td>
398   </tr>
399
400   <tr>
401     <td valign="top"><a href="../www/command-line-options.html#coalesce">-coalesce</a></td>
402     <td valign="top">merge a sequence of images</td>
403   </tr>
404
405   <tr>
406     <td valign="top"><a href="../www/command-line-options.html#colorize">-colorize <em class="option">value</em></a></td>
407     <td valign="top">colorize the image with the fill color</td>
408   </tr>
409
410   <tr>
411     <td valign="top"><a href="../www/command-line-options.html#color-matrix">-color-matrix <em class="option">matrix</em></a></td>
412     <td valign="top">apply color correction to the image.</td>
413   </tr>
414
415   <tr>
416     <td valign="top"><a href="../www/command-line-options.html#colors">-colors <em class="option">value</em></a></td>
417     <td valign="top">preferred number of colors in the image</td>
418   </tr>
419
420   <tr>
421     <td valign="top"><a href="../www/command-line-options.html#colorspace">-colorspace <em class="option">type</em></a></td>
422     <td valign="top">set image colorspace</td>
423   </tr>
424
425   <tr>
426     <td valign="top"><a href="../www/command-line-options.html#combine">-combine</a></td>
427     <td valign="top">combine a sequence of images</td>
428   </tr>
429
430   <tr>
431     <td valign="top"><a href="../www/command-line-options.html#comment">-comment <em class="option">string</em></a></td>
432     <td valign="top">annotate image with comment</td>
433   </tr>
434
435   <tr>
436     <td valign="top"><a href="../www/command-line-options.html#compose">-compose <em class="option">operator</em></a></td>
437     <td valign="top">set image composite operator</td>
438   </tr>
439
440   <tr>
441     <td valign="top"><a href="../www/command-line-options.html#composite">-composite</a></td>
442     <td valign="top">composite image</td>
443   </tr>
444
445   <tr>
446     <td valign="top"><a href="../www/command-line-options.html#compress">-compress <em class="option">type</em></a></td>
447     <td valign="top">image compression type</td>
448   </tr>
449
450   <tr>
451     <td valign="top"><a href="../www/command-line-options.html#contrast">-contrast</a></td>
452     <td valign="top">enhance or reduce the image contrast</td>
453   </tr>
454
455   <tr>
456     <td valign="top"><a href="../www/command-line-options.html#convolve">-convolve <em class="option">coefficients</em></a></td>
457     <td valign="top">apply a convolution kernel to the image</td>
458   </tr>
459
460   <tr>
461     <td valign="top"><a href="../www/command-line-options.html#crop">-crop <em class="option">geometry</em></a></td>
462     <td valign="top">crop the image</td>
463   </tr>
464
465   <tr>
466     <td valign="top"><a href="../www/command-line-options.html#cycle">-cycle <em class="option">amount</em></a></td>
467     <td valign="top">cycle the image colormap</td>
468   </tr>
469
470   <tr>
471     <td valign="top"><a href="../www/command-line-options.html#decipher">-decipher <em class="option">filename</em></a></td>
472     <td valign="top">convert cipher pixels to plain</td>
473   </tr>
474
475   <tr>
476     <td valign="top"><a href="../www/command-line-options.html#debug">-debug <em class="option">events</em></a></td>
477     <td valign="top">display copious debugging information</td>
478   </tr>
479
480   <tr>
481     <td valign="top"><a href="../www/command-line-options.html#define">-define <em class="option">format:option</em></a></td>
482     <td valign="top">define one or more image format options</td>
483   </tr>
484
485   <tr>
486     <td valign="top"><a href="../www/command-line-options.html#deconstruct">-deconstruct</a></td>
487     <td valign="top">break down an image sequence into constituent parts</td>
488   </tr>
489
490   <tr>
491     <td valign="top"><a href="../www/command-line-options.html#delay">-delay <em class="option">value</em></a></td>
492     <td valign="top">display the next image after pausing</td>
493   </tr>
494
495   <tr>
496     <td valign="top"><a href="../www/command-line-options.html#delete">-delete <em class="option">index</em></a></td>
497     <td valign="top">delete the image from the image sequence</td>
498   </tr>
499
500   <tr>
501     <td valign="top"><a href="../www/command-line-options.html#density">-density <em class="option">geometry</em></a></td>
502     <td valign="top">horizontal and vertical density of the image</td>
503   </tr>
504
505   <tr>
506     <td valign="top"><a href="../www/command-line-options.html#depth">-depth <em class="option">value</em></a></td>
507     <td valign="top">image depth</td>
508   </tr>
509
510   <tr>
511     <td valign="top"><a href="../www/command-line-options.html#despeckle">-despeckle</a></td>
512     <td valign="top">reduce the speckles within an image</td>
513   </tr>
514
515   <tr>
516     <td valign="top"><a href="../www/command-line-options.html#direction">-direction <em class="option">type</em></a></td>
517     <td valign="top">render text right-to-left or left-to-right</td>
518   </tr>
519
520   <tr>
521     <td valign="top"><a href="../www/command-line-options.html#display">-display <em class="option">server</em></a></td>
522     <td valign="top">get image or font from this X server</td>
523   </tr>
524
525   <tr>
526     <td valign="top"><a href="../www/command-line-options.html#dispose">-dispose <em class="option">method</em></a></td>
527     <td valign="top">layer disposal method</td>
528   </tr>
529
530   <tr>
531     <td valign="top"><a href="../www/command-line-options.html#distort">-distort <em class="option">type coefficients</em></a></td>
532     <td valign="top">distort image</td>
533   </tr>
534
535   <tr>
536     <td valign="top"><a href="../www/command-line-options.html#dither">-dither  <em class="option">method</em></a></td>
537     <td valign="top">apply error diffusion to image</td>
538   </tr>
539
540   <tr>
541     <td valign="top"><a href="../www/command-line-options.html#draw">-draw <em class="option">string</em></a></td>
542     <td valign="top">annotate the image with a graphic primitive</td>
543   </tr>
544
545   <tr>
546     <td valign="top"><a href="../www/command-line-options.html#edge">-edge <em class="option">radius</em></a></td>
547     <td valign="top">apply a filter to detect edges in the image</td>
548   </tr>
549
550   <tr>
551     <td valign="top"><a href="../www/command-line-options.html#emboss">-emboss <em class="option">radius</em></a></td>
552     <td valign="top">emboss an image</td>
553   </tr>
554
555   <tr>
556     <td valign="top"><a href="../www/command-line-options.html#encipher">-encipher <em class="option">filename</em></a></td>
557     <td valign="top">convert plain pixels to cipher pixels</td>
558   </tr>
559
560   <tr>
561     <td valign="top"><a href="../www/command-line-options.html#encoding">-encoding <em class="option">type</em></a></td>
562     <td valign="top">text encoding type</td>
563   </tr>
564
565   <tr>
566     <td valign="top"><a href="../www/command-line-options.html#endian">-endian <em class="option">type</em></a></td>
567     <td valign="top">endianness (MSB or LSB) of the image</td>
568   </tr>
569
570   <tr>
571     <td valign="top"><a href="../www/command-line-options.html#enhance">-enhance</a></td>
572     <td valign="top">apply a digital filter to enhance a noisy image</td>
573   </tr>
574
575   <tr>
576     <td valign="top"><a href="../www/command-line-options.html#equalize">-equalize</a></td>
577     <td valign="top">perform histogram equalization to an image</td>
578   </tr>
579
580   <tr>
581     <td valign="top"><a href="../www/command-line-options.html#evaluate">-evaluate <em class="option">operator value</em></a></td>
582     <td valign="top">evaluate an arithmetic, relational, or logical expression</td>
583   </tr>
584
585   <tr>
586     <td valign="top"><a href="../www/command-line-options.html#evaluate-sequence">-evaluate-sequence <em class="option">operator</em></a></td>
587     <td valign="top">evaluate an arithmetic, relational, or logical expression for an image sequence</td>
588   </tr>
589
590   <tr>
591     <td valign="top"><a href="../www/command-line-options.html#extent">-extent <em class="option">geometry</em></a></td>
592     <td valign="top">set the image size</td>
593   </tr>
594
595   <tr>
596     <td valign="top"><a href="../www/command-line-options.html#extract">-extract <em class="option">geometry</em></a></td>
597     <td valign="top">extract area from image</td>
598   </tr>
599
600   <tr>
601     <td valign="top"><a href="../www/command-line-options.html#family">-family <em class="option">name</em></a></td>
602     <td valign="top">render text with this font family</td>
603   </tr>
604
605   <tr>
606     <td valign="top"><a href="../www/command-line-options.html#fft">-fft</a></td>
607     <td valign="top">implments the discrete Fourier transform (DFT)</td>
608   </tr>
609
610   <tr>
611     <td valign="top"><a href="../www/command-line-options.html#fill">-fill <em class="option">color</em></a></td>
612     <td valign="top">color to use when filling a graphic primitive</td>
613   </tr>
614
615   <tr>
616     <td valign="top"><a href="../www/command-line-options.html#filter">-filter <em class="option">type</em></a></td>
617     <td valign="top">use this filter when resizing an image</td>
618   </tr>
619
620   <tr>
621     <td valign="top"><a href="../www/command-line-options.html#flatten">-flatten</a></td>
622     <td valign="top">flatten a sequence of images</td>
623   </tr>
624
625   <tr>
626     <td valign="top"><a href="../www/command-line-options.html#flip">-flip</a></td>
627     <td valign="top">flip image in the vertical direction</td>
628   </tr>
629
630   <tr>
631     <td valign="top"><a href="../www/command-line-options.html#floodfill">-floodfill <em class="option">geometry color</em></a></td>
632     <td valign="top">floodfill the image with color</td>
633   </tr>
634
635   <tr>
636     <td valign="top"><a href="../www/command-line-options.html#flop">-flop</a></td>
637     <td valign="top">flop image in the horizontal direction</td>
638   </tr>
639
640   <tr>
641     <td valign="top"><a href="../www/command-line-options.html#font">-font <em class="option">name</em></a></td>
642     <td valign="top">render text with this font</td>
643   </tr>
644
645   <tr>
646     <td valign="top"><a href="../www/command-line-options.html#format_identify_">-format <em class="option">string</em></a></td>
647     <td valign="top">output formatted image characteristics</td>
648   </tr>
649
650   <tr>
651     <td valign="top"><a href="../www/command-line-options.html#frame">-frame <em class="option">geometry</em></a></td>
652     <td valign="top">surround image with an ornamental border</td>
653   </tr>
654
655   <tr>
656     <td valign="top"><a href="../www/command-line-options.html#function">-function <em class="option">name</em></a></td>
657     <td valign="top">apply a function to the image</td>
658   </tr>
659
660   <tr>
661     <td valign="top"><a href="../www/command-line-options.html#fuzz">-fuzz <em class="option">distance</em></a></td>
662     <td valign="top">colors within this distance are considered equal</td>
663   </tr>
664
665   <tr>
666     <td valign="top"><a href="../www/command-line-options.html#fx">-fx <em class="option">expression</em></a></td>
667     <td valign="top">apply mathematical expression to an image channel(s)</td>
668   </tr>
669
670   <tr>
671     <td valign="top"><a href="../www/command-line-options.html#gamma">-gamma <em class="option">value</em></a></td>
672     <td valign="top">level of gamma correction</td>
673   </tr>
674
675   <tr>
676     <td valign="top"><a href="../www/command-line-options.html#gaussian-blur">-gaussian-blur <em class="option">geometry</em></a></td>
677     <td valign="top">reduce image noise and reduce detail levels</td>
678   </tr>
679
680   <tr>
681     <td valign="top"><a href="../www/command-line-options.html#geometry">-geometry <em class="option">geometry</em></a></td>
682     <td valign="top">preferred size or location of the image</td>
683   </tr>
684
685   <tr>
686     <td valign="top"><a href="../www/command-line-options.html#gravity">-gravity <em class="option">type</em></a></td>
687     <td valign="top">horizontal and vertical text placement</td>
688   </tr>
689
690   <tr>
691     <td valign="top"><a href="../www/command-line-options.html#green-primary">-green-primary <em class="option">point</em></a></td>
692     <td valign="top">chromaticity green primary point</td>
693   </tr>
694
695   <tr>
696     <td valign="top"><a href="../www/command-line-options.html#help">-help</a></td>
697     <td valign="top">print program options</td>
698   </tr>
699
700   <tr>
701     <td valign="top"><a href="../www/command-line-options.html#identify">-identify</a></td>
702     <td valign="top">identify the format and characteristics of the image</td>
703   </tr>
704
705   <tr>
706     <td valign="top"><a href="../www/command-line-options.html#ift">-ift</a></td>
707     <td valign="top">implements the inverse discrete Fourier transform (DFT)</td>
708   </tr>
709
710   <tr>
711     <td valign="top"><a href="../www/command-line-options.html#implode">-implode <em class="option">amount</em></a></td>
712     <td valign="top">implode image pixels about the center</td>
713   </tr>
714
715   <tr>
716     <td valign="top"><a href="../www/command-line-options.html#insert">-insert <em class="option">index</em></a></td>
717     <td valign="top">insert last image into the image sequence</td>
718   </tr>
719
720   <tr>
721     <td valign="top"><a href="../www/command-line-options.html#intent">-intent <em class="option">type</em></a></td>
722     <td valign="top">type of rendering intent when managing the image color</td>
723   </tr>
724
725   <tr>
726     <td valign="top"><a href="../www/command-line-options.html#interlace">-interlace <em class="option">type</em></a></td>
727     <td valign="top">type of image interlacing scheme</td>
728   </tr>
729
730   <tr>
731     <td valign="top"><a href="../www/command-line-options.html#interline-spacing">-interline-spacing <em class="option">value</em></a></td>
732     <td valign="top">the space between two text lines</td>
733   </tr>
734
735   <tr>
736     <td valign="top"><a href="../www/command-line-options.html#interpolate">-interpolate <em class="option">method</em></a></td>
737     <td valign="top">pixel color interpolation method</td>
738   </tr>
739
740   <tr>
741     <td valign="top"><a href="../www/command-line-options.html#interword-spacing">-interword-spacing <em class="option">value</em></a></td>
742     <td valign="top">the space between two words</td>
743   </tr>
744
745   <tr>
746     <td valign="top"><a href="../www/command-line-options.html#kerning">-kerning <em class="option">value</em></a></td>
747     <td valign="top">the space between two characters</td>
748   </tr>
749
750   <tr>
751     <td valign="top"><a href="../www/command-line-options.html#label">-label <em class="option">string</em></a></td>
752     <td valign="top">assign a label to an image</td>
753   </tr>
754
755   <tr>
756     <td valign="top"><a href="../www/command-line-options.html#lat">-lat <em class="option">geometry</em></a></td>
757     <td valign="top">local adaptive thresholding</td>
758   </tr>
759
760   <tr>
761     <td valign="top"><a href="../www/command-line-options.html#layers">-layers <em class="option">method</em></a></td>
762     <td valign="top">optimize or compare image layers</td>
763   </tr>
764
765   <tr>
766     <td valign="top"><a href="../www/command-line-options.html#level">-level <em class="option">value</em></a></td>
767     <td valign="top">adjust the level of image contrast</td>
768   </tr>
769
770   <tr>
771     <td valign="top"><a href="../www/command-line-options.html#limit">-limit <em class="option">type value</em></a></td>
772     <td valign="top">pixel cache resource limit</td>
773   </tr>
774
775   <tr>
776     <td valign="top"><a href="../www/command-line-options.html#linear-stretch">-linear-stretch <em class="option">geometry</em></a></td>
777     <td valign="top">linear with saturation histogram stretch</td>
778   </tr>
779
780   <tr>
781     <td valign="top"><a href="../www/command-line-options.html#liquid-rescale">-liquid-rescale <em class="option">geometry</em></a></td>
782     <td valign="top">rescale image with seam-carving</td>
783   </tr>
784
785   <tr>
786     <td valign="top"><a href="../www/command-line-options.html#log">-log <em class="option">format</em></a></td>
787     <td valign="top">format of debugging information</td>
788   </tr>
789
790   <tr>
791     <td valign="top"><a href="../www/command-line-options.html#loop">-loop <em class="option">iterations</em></a></td>
792     <td valign="top">add Netscape loop extension to your GIF animation</td>
793   </tr>
794
795   <tr>
796     <td valign="top"><a href="../www/command-line-options.html#mask">-mask <em class="option">filename</em></a></td>
797     <td valign="top">associate a mask with the image</td>
798   </tr>
799
800   <tr>
801     <td valign="top"><a href="../www/command-line-options.html#mattecolor">-mattecolor <em class="option">color</em></a></td>
802     <td valign="top">frame color</td>
803   </tr>
804
805   <tr>
806     <td valign="top"><a href="../www/command-line-options.html#median">-median <em class="option">radius</em></a></td>
807     <td valign="top">apply a median filter to the image</td>
808   </tr>
809
810   <tr>
811     <td valign="top"><a href="../www/command-line-options.html#modulate">-modulate <em class="option">value</em></a></td>
812     <td valign="top">vary the brightness, saturation, and hue</td>
813   </tr>
814
815   <tr>
816     <td valign="top"><a href="../www/command-line-options.html#monitor">-monitor</a></td>
817     <td valign="top">monitor progress</td>
818   </tr>
819
820   <tr>
821     <td valign="top"><a href="../www/command-line-options.html#monochrome">-monochrome</a></td>
822     <td valign="top">transform image to black and white</td>
823   </tr>
824
825   <tr>
826     <td valign="top"><a href="../www/command-line-options.html#morph">-morph <em class="option">value</em></a></td>
827     <td valign="top">morph an image sequence</td>
828   </tr>
829
830   <tr>
831     <td valign="top"><a href="../www/command-line-options.html#morphology">-morphology <em class="option">method</em></a> <em class="option">kernel</em></td>
832     <td valign="top">apply a morphology method to the image</td>
833   </tr>
834
835   <tr>
836     <td valign="top"><a href="../www/command-line-options.html#motion-blur">-motion-blur <em class="option">geometry</em></a></td>
837     <td valign="top">simulate motion blur</td>
838   </tr>
839
840   <tr>
841     <td valign="top"><a href="../www/command-line-options.html#negate">-negate</a></td>
842     <td valign="top">replace each pixel with its complementary color </td>
843   </tr>
844
845   <tr>
846     <td valign="top"><a href="../www/command-line-options.html#noise">-noise <em class="option">radius</em></a></td>
847     <td valign="top">add or reduce noise in an image</td>
848   </tr>
849
850   <tr>
851     <td valign="top"><a href="../www/command-line-options.html#normalize">-normalize</a></td>
852     <td valign="top">transform image to span the full range of colors</td>
853   </tr>
854
855   <tr>
856     <td valign="top"><a href="../www/command-line-options.html#opaque">-opaque <em class="option">color</em></a></td>
857     <td valign="top">change this color to the fill color</td>
858   </tr>
859
860   <tr>
861     <td valign="top"><a href="../www/command-line-options.html#ordered-dither">-ordered-dither <em class="option">NxN</em></a></td>
862     <td valign="top">ordered dither the image</td>
863   </tr>
864
865   <tr>
866     <td valign="top"><a href="../www/command-line-options.html#orient">-orient <em class="option">type</em></a></td>
867     <td valign="top">image orientation</td>
868   </tr>
869
870   <tr>
871     <td valign="top"><a href="../www/command-line-options.html#page">-page <em class="option">geometry</em></a></td>
872     <td valign="top">size and location of an image canvas (setting)</td>
873   </tr>
874
875   <tr>
876     <td valign="top"><a href="../www/command-line-options.html#paint">-paint <em class="option">radius</em></a></td>
877     <td valign="top">simulate an oil painting</td>
878   </tr>
879
880   <tr>
881     <td valign="top"><a href="../www/command-line-options.html#ping">-ping</a></td>
882     <td valign="top">efficiently determine image attributes</td>
883   </tr>
884
885   <tr>
886     <td valign="top"><a href="../www/command-line-options.html#pointsize">-pointsize <em class="option">value</em></a></td>
887     <td valign="top">font point size</td>
888   </tr>
889
890   <tr>
891     <td valign="top"><a href="../www/command-line-options.html#polaroid">-polaroid <em class="option">angle</em></a></td>
892     <td valign="top">simulate a Polaroid picture</td>
893   </tr>
894
895   <tr>
896     <td valign="top"><a href="../www/command-line-options.html#posterize">-posterize <em class="option">levels</em></a></td>
897     <td valign="top">reduce the image to a limited number of color levels</td>
898   </tr>
899
900   <tr>
901     <td valign="top"><a href="../www/command-line-options.html#precision">-precision <em class="option">value</em></a></td>
902     <td valign="top">set the maximum number of significant digits to be printed</td>
903   </tr>
904
905   <tr>
906     <td valign="top"><a href="../www/command-line-options.html#preview">-preview <em class="option">type</em></a></td>
907     <td valign="top">image preview type</td>
908   </tr>
909
910   <tr>
911     <td valign="top"><a href="../www/command-line-options.html#print">-print <em class="option">string</em></a></td>
912     <td valign="top">interpret string and print to console</td>
913   </tr>
914
915   <tr>
916     <td valign="top"><a href="../www/command-line-options.html#process">-process <em class="option">image-filter</em></a></td>
917     <td valign="top">process the image with a custom image filter</td>
918   </tr>
919
920   <tr>
921     <td valign="top"><a href="../www/command-line-options.html#profile">-profile <em class="option">filename</em></a></td>
922     <td valign="top">add, delete, or apply an image profile</td>
923   </tr>
924
925   <tr>
926     <td valign="top"><a href="../www/command-line-options.html#quality">-quality <em class="option">value</em></a></td>
927     <td valign="top">JPEG/MIFF/PNG compression level</td>
928   </tr>
929
930   <tr>
931     <td valign="top"><a href="../www/command-line-options.html#quantize">-quantize <em class="option">colorspace</em></a></td>
932     <td valign="top">reduce image colors in this colorspace</td>
933   </tr>
934
935   <tr>
936     <td valign="top"><a href="../www/command-line-options.html#quiet">-quiet</a></td>
937     <td valign="top">suppress all warning messages</td>
938   </tr>
939
940   <tr>
941     <td valign="top"><a href="../www/command-line-options.html#radial-blur">-radial-blur <em class="option">angle</em></a></td>
942     <td valign="top">radial blur the image</td>
943   </tr>
944
945   <tr>
946     <td valign="top"><a href="../www/command-line-options.html#raise">-raise <em class="option">value</em></a></td>
947     <td valign="top">lighten/darken image edges to create a 3-D effect</td>
948   </tr>
949
950   <tr>
951     <td valign="top"><a href="../www/command-line-options.html#random-threshold">-random-threshold <em class="option">low,high</em></a></td>
952     <td valign="top">random threshold the image</td>
953   </tr>
954
955   <tr>
956     <td valign="top"><a href="../www/command-line-options.html#red-primary">-red-primary <em class="option">point</em></a></td>
957     <td valign="top">chromaticity red primary point</td>
958   </tr>
959
960   <tr>
961     <td valign="top"><a href="../www/command-line-options.html#regard-warnings">-regard-warnings</a></td>
962     <td valign="top">pay attention to warning messages.</td>
963   </tr>
964
965   <tr>
966     <td valign="top"><a href="../www/command-line-options.html#region">-region <em class="option">geometry</em></a></td>
967     <td valign="top">apply options to a portion of the image</td>
968   </tr>
969
970   <tr>
971     <td valign="top"><a href="../www/command-line-options.html#remap">-remap <em class="option">filename</em></a></td>
972     <td valign="top">transform image colors to match this set of colors</td>
973   </tr>
974
975   <tr>
976     <td valign="top"><a href="../www/command-line-options.html#render">-render</a></td>
977     <td valign="top">render vector graphics</td>
978   </tr>
979
980   <tr>
981     <td valign="top"><a href="../www/command-line-options.html#repage">-repage <em class="option">geometry</em></a></td>
982     <td valign="top">size and location of an image canvas</td>
983   </tr>
984
985   <tr>
986     <td valign="top"><a href="../www/command-line-options.html#resample">-resample <em class="option">geometry</em></a></td>
987     <td valign="top">change the resolution of an image</td>
988   </tr>
989
990   <tr>
991     <td valign="top"><a href="../www/command-line-options.html#resize">-resize <em class="option">geometry</em></a></td>
992     <td valign="top">resize the image</td>
993   </tr>
994
995   <tr>
996     <td valign="top"><a href="../www/command-line-options.html#respect-parentheses">-respect-parentheses</a></td>
997     <td valign="top">settings remain in effect until parenthesis boundary.</td>
998   </tr>
999
1000   <tr>
1001     <td valign="top"><a href="../www/command-line-options.html#roll">-roll <em class="option">geometry</em></a></td>
1002     <td valign="top">roll an image vertically or horizontally</td>
1003   </tr>
1004
1005   <tr>
1006     <td valign="top"><a href="../www/command-line-options.html#rotate">-rotate <em class="option">degrees</em></a></td>
1007     <td valign="top">apply Paeth rotation to the image</td>
1008   </tr>
1009
1010   <tr>
1011     <td valign="top"><a href="../www/command-line-options.html#sample">-sample <em class="option">geometry</em></a></td>
1012     <td valign="top">scale image with pixel sampling</td>
1013   </tr>
1014
1015   <tr>
1016     <td valign="top"><a href="../www/command-line-options.html#sampling-factor">-sampling-factor <em class="option">geometry</em></a></td>
1017     <td valign="top">horizontal and vertical sampling factor</td>
1018   </tr>
1019
1020   <tr>
1021     <td valign="top"><a href="../www/command-line-options.html#scale">-scale <em class="option">geometry</em></a></td>
1022     <td valign="top">scale the image</td>
1023   </tr>
1024
1025   <tr>
1026     <td valign="top"><a href="../www/command-line-options.html#scene">-scene <em class="option">value</em></a></td>
1027     <td valign="top">image scene number</td>
1028   </tr>
1029
1030   <tr>
1031     <td valign="top"><a href="../www/command-line-options.html#seed">-seed <em class="option">value</em></a></td>
1032     <td valign="top">seed a new sequence of pseudo-random numbers</td>
1033   </tr>
1034
1035   <tr>
1036     <td valign="top"><a href="../www/command-line-options.html#segment">-segment <em class="option">values</em></a></td>
1037     <td valign="top">segment an image</td>
1038   </tr>
1039
1040   <tr>
1041     <td valign="top"><a href="../www/command-line-options.html#threshold">-selective-blur <em class="option">geometry</em></a></td>
1042     <td valign="top">selectively blur pixels within a contrast threshold</td>
1043   </tr>
1044
1045   <tr>
1046     <td valign="top"><a href="../www/command-line-options.html#separate">-separate</a></td>
1047     <td valign="top">separate an image channel into a grayscale image</td>
1048   </tr>
1049
1050   <tr>
1051     <td valign="top"><a href="../www/command-line-options.html#sepia-tone">-sepia-tone <em class="option">threshold</em></a></td>
1052     <td valign="top">simulate a sepia-toned photo</td>
1053   </tr>
1054
1055   <tr>
1056     <td valign="top"><a href="../www/command-line-options.html#set">-set <em class="option">attribute value</em></a></td>
1057     <td valign="top">set an image attribute</td>
1058   </tr>
1059
1060   <tr>
1061     <td valign="top"><a href="../www/command-line-options.html#shade">-shade <em class="option">degrees</em></a></td>
1062     <td valign="top">shade the image using a distant light source</td>
1063   </tr>
1064
1065   <tr>
1066     <td valign="top"><a href="../www/command-line-options.html#shadow">-shadow <em class="option">geometry</em></a></td>
1067     <td valign="top">simulate an image shadow</td>
1068   </tr>
1069
1070   <tr>
1071     <td valign="top"><a href="../www/command-line-options.html#sharpen">-sharpen <em class="option">geometry</em></a></td>
1072     <td valign="top">sharpen the image</td>
1073   </tr>
1074
1075   <tr>
1076     <td valign="top"><a href="../www/command-line-options.html#shave">-shave <em class="option">geometry</em></a></td>
1077     <td valign="top">shave pixels from the image edges</td>
1078   </tr>
1079
1080   <tr>
1081     <td valign="top"><a href="../www/command-line-options.html#shear">-shear <em class="option">geometry</em></a></td>
1082     <td valign="top">slide one edge of the image along the X or Y axis</td>
1083   </tr>
1084
1085   <tr>
1086     <td valign="top"><a href="../www/command-line-options.html#sigmoidal">-sigmoidal-contrast <em class="option">geometry</em></a></td>
1087     <td valign="top">increase the contrast without saturating highlights or shadows</td>
1088   </tr>
1089
1090   <tr>
1091     <td valign="top"><a href="../www/command-line-options.html#size">-size <em class="option">geometry</em></a></td>
1092     <td valign="top">width and height of image</td>
1093   </tr>
1094
1095   <tr>
1096     <td valign="top"><a href="../www/command-line-options.html#sketch">-sketch <em class="option">geometry</em></a></td>
1097     <td valign="top">simulate a pencil sketch</td>
1098   </tr>
1099
1100   <tr>
1101     <td valign="top"><a href="../www/command-line-options.html#solarize">-solarize <em class="option">threshold</em></a></td>
1102     <td valign="top">negate all pixels above the threshold level</td>
1103   </tr>
1104
1105   <tr>
1106     <td valign="top"><a href="../www/command-line-options.html#splice">-splice <em class="option">geometry</em></a></td>
1107     <td valign="top">splice the background color into the image</td>
1108   </tr>
1109
1110   <tr>
1111     <td valign="top"><a href="../www/command-line-options.html#spread">-spread <em class="option">radius</em></a></td>
1112     <td valign="top">displace image pixels by a random amount</td>
1113   </tr>
1114
1115   <tr>
1116     <td valign="top"><a href="../www/command-line-options.html#strip">-strip</a></td>
1117     <td valign="top">strip image of all profiles and comments</td>
1118   </tr>
1119
1120   <tr>
1121     <td valign="top"><a href="../www/command-line-options.html#stroke">-stroke <em class="option">color</em></a></td>
1122     <td valign="top">graphic primitive stroke color</td>
1123   </tr>
1124
1125   <tr>
1126     <td valign="top"><a href="../www/command-line-options.html#strokewidth">-strokewidth <em class="option">value</em></a></td>
1127     <td valign="top">graphic primitive stroke width</td>
1128   </tr>
1129
1130   <tr>
1131     <td valign="top"><a href="../www/command-line-options.html#stretch">-stretch <em class="option">type</em></a></td>
1132     <td valign="top">render text with this font stretch</td>
1133   </tr>
1134
1135   <tr>
1136     <td valign="top"><a href="../www/command-line-options.html#style">-style <em class="option">type</em></a></td>
1137     <td valign="top">render text with this font style</td>
1138   </tr>
1139
1140   <tr>
1141     <td valign="top"><a href="../www/command-line-options.html#swap">-swap <em class="option">indexes</em></a></td>
1142     <td valign="top">swap two images in the image sequence</td>
1143   </tr>
1144
1145   <tr>
1146     <td valign="top"><a href="../www/command-line-options.html#swirl">-swirl <em class="option">degrees</em></a></td>
1147     <td valign="top">swirl image pixels about the center</td>
1148   </tr>
1149
1150   <tr>
1151     <td valign="top"><a href="../www/command-line-options.html#synchronize">-synchronize</a></td>
1152     <td valign="top">synchronize image to storage device</td>
1153   </tr>
1154
1155   <tr>
1156     <td valign="top"><a href="../www/command-line-options.html#taint">-taint</a></td>
1157     <td valign="top">mark the image as modified</td>
1158   </tr>
1159
1160   <tr>
1161     <td valign="top"><a href="../www/command-line-options.html#texture">-texture <em class="option">filename</em></a></td>
1162     <td valign="top">name of texture to tile onto the image background</td>
1163   </tr>
1164
1165   <tr>
1166     <td valign="top"><a href="../www/command-line-options.html#threshold">-threshold <em class="option">value</em></a></td>
1167     <td valign="top">threshold the image</td>
1168   </tr>
1169
1170   <tr>
1171     <td valign="top"><a href="../www/command-line-options.html#thumbnail">-thumbnail <em class="option">geometry</em></a></td>
1172     <td valign="top">create a thumbnail of the image</td>
1173   </tr>
1174
1175   <tr>
1176     <td valign="top"><a href="../www/command-line-options.html#tile">-tile <em class="option">filename</em></a></td>
1177     <td valign="top">tile image when filling a graphic primitive</td>
1178   </tr>
1179
1180   <tr>
1181     <td valign="top"><a href="../www/command-line-options.html#tile-offset">-tile-offset <em class="option">geometry</em></a></td>
1182     <td valign="top">set the image tile offset</td>
1183   </tr>
1184
1185   <tr>
1186     <td valign="top"><a href="../www/command-line-options.html#tint">-tint <em class="option">value</em></a></td>
1187     <td valign="top">tint the image with the fill color</td>
1188   </tr>
1189
1190   <tr>
1191     <td valign="top"><a href="../www/command-line-options.html#transform">-transform</a></td>
1192     <td valign="top">affine transform image</td>
1193   </tr>
1194
1195   <tr>
1196     <td valign="top"><a href="../www/command-line-options.html#transparent">-transparent <em class="option">color</em></a></td>
1197     <td valign="top">make this color transparent within the image</td>
1198   </tr>
1199
1200   <tr>
1201     <td valign="top"><a href="../www/command-line-options.html#transparent-color">-transparent-color <em class="option">color</em></a></td>
1202     <td valign="top">transparent color</td>
1203   </tr>
1204
1205   <tr>
1206     <td valign="top"><a href="../www/command-line-options.html#transpose">-transpose</a></td>
1207     <td valign="top">flip image in the vertical direction and rotate 90 degrees</td>
1208   </tr>
1209
1210   <tr>
1211     <td valign="top"><a href="../www/command-line-options.html#transverse">-transverse</a></td>
1212     <td valign="top">flop image in the horizontal direction and rotate 270 degrees</td>
1213   </tr>
1214
1215   <tr>
1216     <td valign="top"><a href="../www/command-line-options.html#treedepth">-treedepth <em class="option">value</em></a></td>
1217     <td valign="top">color tree depth</td>
1218   </tr>
1219
1220   <tr>
1221     <td valign="top"><a href="../www/command-line-options.html#trim">-trim</a></td>
1222     <td valign="top">trim image edges</td>
1223   </tr>
1224
1225   <tr>
1226     <td valign="top"><a href="../www/command-line-options.html#type">-type <em class="option">type</em></a></td>
1227     <td valign="top">image type</td>
1228   </tr>
1229
1230   <tr>
1231     <td valign="top"><a href="../www/command-line-options.html#undercolor">-undercolor <em class="option">color</em></a></td>
1232     <td valign="top">annotation bounding box color</td>
1233   </tr>
1234
1235   <tr>
1236     <td valign="top"><a href="../www/command-line-options.html#unique-colors">-unique-colors</a></td>
1237     <td valign="top">discard all but one of any pixel color.</td>
1238   </tr>
1239
1240   <tr>
1241     <td valign="top"><a href="../www/command-line-options.html#units">-units <em class="option">type</em></a></td>
1242     <td valign="top">the units of image resolution</td>
1243   </tr>
1244
1245   <tr>
1246     <td valign="top"><a href="../www/command-line-options.html#unsharp">-unsharp <em class="option">geometry</em></a></td>
1247     <td valign="top">sharpen the image</td>
1248   </tr>
1249
1250   <tr>
1251     <td valign="top"><a href="../www/command-line-options.html#verbose">-verbose</a></td>
1252     <td valign="top">print detailed information about the image</td>
1253   </tr>
1254
1255   <tr>
1256     <td valign="top"><a href="../www/command-line-options.html#version">-version</a></td>
1257     <td valign="top">print version information</td>
1258   </tr>
1259
1260   <tr>
1261     <td valign="top"><a href="../www/command-line-options.html#view">-view</a></td>
1262     <td valign="top">FlashPix viewing transforms</td>
1263   </tr>
1264
1265   <tr>
1266     <td valign="top"><a href="../www/command-line-options.html#vignette">-vignette <em class="option">geometry</em></a></td>
1267     <td valign="top">soften the edges of the image in vignette style</td>
1268   </tr>
1269
1270   <tr>
1271     <td valign="top"><a href="../www/command-line-options.html#virtual-pixel">-virtual-pixel <em class="option">method</em></a></td>
1272     <td valign="top">access method for pixels outside the boundaries of the image</td>
1273   </tr>
1274
1275   <tr>
1276     <td valign="top"><a href="../www/command-line-options.html#wave">-wave <em class="option">geometry</em></a></td>
1277     <td valign="top">alter an image along a sine wave</td>
1278   </tr>
1279
1280   <tr>
1281     <td valign="top"><a href="../www/command-line-options.html#weight">-weight <em class="option">type</em></a></td>
1282     <td valign="top">render text with this font weight</td>
1283   </tr>
1284
1285   <tr>
1286     <td valign="top"><a href="../www/command-line-options.html#white-point">-white-point <em class="option">point</em></a></td>
1287     <td valign="top">chromaticity white point</td>
1288   </tr>
1289
1290   <tr>
1291     <td valign="top"><a href="../www/command-line-options.html#white-threshold">-white-threshold <em class="option">value</em></a></td>
1292     <td valign="top">force all pixels above the threshold into white</td>
1293   </tr>
1294
1295   <tr>
1296     <td valign="top"><a href="../www/command-line-options.html#write">-write <em class="option">filename</em></a></td>
1297     <td valign="top">write images to this file</td>
1298   </tr>
1299
1300   </tbody>
1301 </table>
1302
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