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94<h1 class="text-center">Convert Between Image Formats</h1>
95<p class="lead magick-description">Use the <code>magick</code> 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="command-line-processing.html">Command Line Processing</a> for advice on how to structure your <code>magick</code> command or see below for example usages of the command.</p>
96
97<p>We list a few examples of the <code>magick</code> command here to illustrate its usefulness and ease of use.  To get started, lets convert an image in the JPEG format to PNG:</p>
98
99<pre class="highlight"><code>magick rose.jpg rose.png
100</code></pre>
101
102<p>Next, we reduce the image size before it is written to the PNG format:</p>
103
104<pre class="highlight"><code>magick rose.jpg -resize 50% rose.png
105</code></pre>
106
107<ul>
108  <a href="../images/rose.jpg">
109  <img src="../images/rose.jpg" width="70" height="46" alt="rose" />
110  </a>
111  <img style="margin-top:13px; margin-bottom:13px;" src="../images/right.gif" width="20" height="20" alt="==>" />
112  <a href="../images/rose.png">
113  <img style="margin-top:11px; margin-bottom:12px;" src="../images/rose.png" width="35" height="23" alt="rose" />
114  </a>
115</ul>
116
117<p>You can combine multiple image-processing operations to produce complex results:</p>
118
119<pre class="highlight"><code>magick -size 320x85 canvas:none -font Bookman-DemiItalic -pointsize 72 \
120  -draw "text 25,60 \'Magick\'" -channel RGBA -blur 0x6 -fill darkred -stroke magenta \
121  -draw "text 20,55 \'Magick\'" fuzzy-magick.png
122</code></pre>
123
124<ul>
125  <a href="../images/fuzzy-magick.png"><img src="../images/fuzzy-magick.png" width="320" height="85" alt="fuzzy-magick" /></a>
126</ul>
127
128<p>or here we resize an image with improved quality:</p>
129
130<pre class="highlight"><code>magick input.png -colorspace RGB +sigmoidal-contrast 11.6933 \
131  -define filter:filter=Sinc -define filter:window=Jinc -define filter:lobes=3 \
132  -resize 400% -sigmoidal-contrast 11.6933 -colorspace sRGB output.png');
133</code></pre>
134
135<p>Utilize other command-line <a href="command-line-tools.html">tools</a> from the <code>magick</code> tool.  To invoke this functionality, simply create a symbolic link to the <code>magick</code> tool or specify the tool you want to use as the first argument.  These two methods are equivalent:</p>
136
137<pre class="highlight"><code>ln -s magick convert
138convert rose.jpg rose.png
139magick convert rose.jpg rose.png
140</code></pre>
141
142<p>You can find additional examples of using <code>magick</code> in <a href="https://legacy.imagemagick.org/Usage/">Examples of ImageMagick Usage</a>.</p>
143
144<h2><a class="anchor" id="options"></a>Option Summary</h2>
145
146<p>The <code>magick</code> command recognizes these options.  Click on an option to get more details about how that option works.</p>
147
148<div class="table-responsive" style="font-size:87.5% !important;">
149<table class="table table-sm table-hover">
150  <tr>
151    <td><a href="command-line-options.html#adaptive-blur">-adaptive-blur <var>geometry</var></a></td>
152    <td>adaptively blur pixels; decrease effect near edges</td>
153  </tr>
154
155  <tr>
156    <td><a href="command-line-options.html#adaptive-resize">-adaptive-resize <var>geometry</var></a></td>
157    <td>adaptively resize image with data dependent triangulation.</td>
158  </tr>
159
160  <tr>
161    <td><a href="command-line-options.html#adaptive-sharpen">-adaptive-sharpen <var>geometry</var></a></td>
162    <td>adaptively sharpen pixels; increase effect near edges</td>
163  </tr>
164
165  <tr>
166    <td><a href="command-line-options.html#adjoin">-adjoin</a></td>
167    <td>join images into a single multi-image file</td>
168  </tr>
169
170  <tr>
171    <td><a href="command-line-options.html#affine">-affine <var>matrix</var></a></td>
172    <td>affine transform matrix</td>
173  </tr>
174
175  <tr>
176    <td><a href="command-line-options.html#alpha">-alpha</a></td>
177    <td>on, activate, off, deactivate, set, opaque, copy",
178transparent, extract, background, or shape the alpha channel</td>
179  </tr>
180
181  <tr>
182    <td><a href="command-line-options.html#annotate">-annotate <var>geometry text</var></a></td>
183    <td>annotate the image with text</td>
184  </tr>
185
186  <tr>
187    <td><a href="command-line-options.html#antialias">-antialias</a></td>
188    <td>remove pixel-aliasing</td>
189  </tr>
190
191  <tr>
192    <td><a href="command-line-options.html#append">-append</a></td>
193    <td>append an image sequence</td>
194  </tr>
195
196  <tr>
197    <td><a href="command-line-options.html#authenticate">-authenticate <var>value</var></a></td>
198    <td>decipher image with this password</td>
199  </tr>
200
201  <tr>
202    <td><a href="command-line-options.html#auto-gamma">-auto-gamma</a></td>
203    <td>automagically adjust gamma level of image</td>
204  </tr>
205
206  <tr>
207    <td><a href="command-line-options.html#auto-level">-auto-level</a></td>
208    <td>automagically adjust color levels of image</td>
209  </tr>
210
211  <tr>
212    <td><a href="command-line-options.html#auto-orient">-auto-orient</a></td>
213    <td>automagically orient image</td>
214  </tr>
215
216  <tr>
217    <td><a href="command-line-options.html#background">-background <var>color</var></a></td>
218    <td>background color</td>
219  </tr>
220
221  <tr>
222    <td><a href="command-line-options.html#bench">-bench <var>iterations</var></a></td>
223    <td>measure performance</td>
224  </tr>
225
226  <tr>
227    <td><a href="command-line-options.html#bias">-bias <var>value</var></a></td>
228    <td>add bias when convolving an image</td>
229  </tr>
230
231  <tr>
232    <td><a href="command-line-options.html#bilateral-blur">-bilateral-blur <var>geometry</var></a></td>
233    <td>non-linear, edge-preserving, and noise-reducing smoothing filter</td>
234  </tr>
235
236  <tr>
237    <td><a href="command-line-options.html#black-threshold">-black-threshold <var>value</var></a></td>
238    <td>force all pixels below the threshold into black</td>
239  </tr>
240
241  <tr>
242    <td><a href="command-line-options.html#blue-primary">-blue-primary <var>point</var></a></td>
243    <td>chromaticity blue primary point</td>
244  </tr>
245
246  <tr>
247    <td><a href="command-line-options.html#blue-shift">-blue-shift <var>factor</var></a></td>
248    <td>simulate a scene at nighttime in the moonlight</td>
249  </tr>
250
251  <tr>
252    <td><a href="command-line-options.html#blur">-blur <var>geometry</var></a></td>
253    <td>reduce image noise and reduce detail levels</td>
254  </tr>
255
256  <tr>
257    <td><a href="command-line-options.html#border">-border <var>geometry</var></a></td>
258    <td>surround image with a border of color</td>
259  </tr>
260
261  <tr>
262    <td><a href="command-line-options.html#bordercolor">-bordercolor <var>color</var></a></td>
263    <td>border color</td>
264  </tr>
265
266  <tr>
267    <td><a href="command-line-options.html#brightness-contrast">-brightness-contrast <var>geometry</var></a></td>
268    <td>improve brightness / contrast of the image</td>
269  </tr>
270
271  <tr>
272    <td><a href="command-line-options.html#canny">-canny <var>geometry</var></a></td>
273    <td>use a multi-stage algorithm to detect a wide range of edges in the image</td>
274  </tr>
275
276  <tr>
277    <td><a href="command-line-options.html#caption">-caption <var>string</var></a></td>
278    <td>assign a caption to an image</td>
279  </tr>
280
281  <tr>
282    <td><a href="command-line-options.html#cdl">-cdl <var>filename</var></a></td>
283    <td>color correct with a color decision list</td>
284  </tr>
285
286  <tr>
287    <td><a href="command-line-options.html#channel">-channel <var>type</var></a></td>
288    <td>apply option to select image channels</td>
289  </tr>
290
291  <tr>
292    <td><a href="command-line-options.html#charcoal">-charcoal <var>radius</var></a></td>
293    <td>simulate a charcoal drawing</td>
294  </tr>
295
296  <tr>
297    <td><a href="command-line-options.html#chop">-chop <var>geometry</var></a></td>
298    <td>remove pixels from the image interior</td>
299  </tr>
300
301  <tr>
302    <td><a href="command-line-options.html#clahe">-clahe <var>geometry</var></a></td>
303    <td>contrast limited adaptive histogram equalization</td>
304  </tr>
305
306  <tr>
307    <td><a href="command-line-options.html#clamp">-clamp</a></td>
308    <td>set each pixel whose value is below zero to zero and any the pixel whose value is above the quantum range to the quantum range (e.g. 65535) otherwise the pixel value remains unchanged.</td>
309  </tr>
310
311  <tr>
312    <td><a href="command-line-options.html#clip">-clip</a></td>
313    <td>clip along the first path from the 8BIM profile</td>
314  </tr>
315
316  <tr>
317    <td><a href="command-line-options.html#clip-mask">-clip-mask</a> <var>filename</var></td>
318    <td>associate clip mask with the image</td>
319  </tr>
320
321  <tr>
322    <td><a href="command-line-options.html#clip-path">-clip-path <var>id</var></a></td>
323    <td>clip along a named path from the 8BIM profile</td>
324  </tr>
325
326  <tr>
327    <td><a href="command-line-options.html#clone">-clone <var>index</var></a></td>
328    <td>clone an image</td>
329  </tr>
330
331  <tr>
332    <td><a href="command-line-options.html#clut">-clut</a></td>
333    <td>apply a color lookup table to the image</td>
334  </tr>
335
336  <tr>
337    <td><a href="command-line-options.html#connected-components">-connected-components <var>connectivity</var></a></td>
338    <td>connected-components uniquely labeled, choose from 4 or 8 way connectivity</td>
339  </tr>
340
341  <tr>
342    <td><a href="command-line-options.html#contrast-stretch">-contrast-stretch <var>geometry</var></a></td>
343    <td>improve the contrast in an image by `stretching' the range of intensity value</td>
344  </tr>
345
346  <tr>
347    <td><a href="command-line-options.html#coalesce">-coalesce</a></td>
348    <td>merge a sequence of images</td>
349  </tr>
350
351  <tr>
352    <td><a href="command-line-options.html#colorize">-colorize <var>value</var></a></td>
353    <td>colorize the image with the fill color</td>
354  </tr>
355
356  <tr>
357    <td><a href="command-line-options.html#color-matrix">-color-matrix <var>matrix</var></a></td>
358    <td>apply color correction to the image.</td>
359  </tr>
360
361  <tr>
362    <td><a href="command-line-options.html#colors">-colors <var>value</var></a></td>
363    <td>preferred number of colors in the image</td>
364  </tr>
365
366  <tr>
367    <td><a href="command-line-options.html#colorspace">-colorspace <var>type</var></a></td>
368    <td>set image colorspace</td>
369  </tr>
370
371  <tr>
372    <td><a href="command-line-options.html#combine">-combine</a></td>
373    <td>combine a sequence of images</td>
374  </tr>
375
376  <tr>
377    <td><a href="command-line-options.html#comment">-comment <var>string</var></a></td>
378    <td>annotate image with comment</td>
379  </tr>
380
381  <tr>
382    <td><a href="command-line-options.html#compare">-compare</a></td>
383    <td>compare image</td>
384  </tr>
385
386  <tr>
387    <td><a href="command-line-options.html#complex">-complex<var>operator</var></a></td>
388    <td>perform complex mathematics on an image sequence</td>
389  </tr>
390
391  <tr>
392    <td><a href="command-line-options.html#compose">-compose <var>operator</var></a></td>
393    <td>set image composite operator</td>
394  </tr>
395
396  <tr>
397    <td><a href="command-line-options.html#composite">-composite</a></td>
398    <td>composite image</td>
399  </tr>
400
401  <tr>
402    <td><a href="command-line-options.html#compress">-compress <var>type</var></a></td>
403    <td>image compression type</td>
404  </tr>
405
406  <tr>
407    <td><a href="command-line-options.html#contrast">-contrast</a></td>
408    <td>enhance or reduce the image contrast</td>
409  </tr>
410
411  <tr>
412    <td><a href="command-line-options.html#convolve">-convolve <var>coefficients</var></a></td>
413    <td>apply a convolution kernel to the image</td>
414  </tr>
415
416  <tr>
417    <td><a href="command-line-options.html#copy">-copy <var>geometry</var> <var>offset</var></a></td>
418    <td>copy pixels from one area of an image to another</td>
419  </tr>
420
421  <tr>
422    <td><a href="command-line-options.html#crop">-crop <var>geometry</var></a></td>
423    <td>crop the image</td>
424  </tr>
425
426  <tr>
427    <td><a href="command-line-options.html#cycle">-cycle <var>amount</var></a></td>
428    <td>cycle the image colormap</td>
429  </tr>
430
431  <tr>
432    <td><a href="command-line-options.html#decipher">-decipher <var>filename</var></a></td>
433    <td>convert cipher pixels to plain</td>
434  </tr>
435
436  <tr>
437    <td><a href="command-line-options.html#debug">-debug <var>events</var></a></td>
438    <td>display copious debugging information</td>
439  </tr>
440
441  <tr>
442    <td><a href="command-line-options.html#define">-define <var>format:option</var></a></td>
443    <td>define one or more image format options</td>
444  </tr>
445
446  <tr>
447    <td><a href="command-line-options.html#deconstruct">-deconstruct</a></td>
448    <td>break down an image sequence into constituent parts</td>
449  </tr>
450
451  <tr>
452    <td><a href="command-line-options.html#delay">-delay <var>centiseconds</var></a></td>
453    <td>display the next image after pausing</td>
454  </tr>
455
456  <tr>
457    <td><a href="command-line-options.html#delete">-delete <var>index</var></a></td>
458    <td>delete the image from the image sequence</td>
459  </tr>
460
461  <tr>
462    <td><a href="command-line-options.html#density">-density <var>geometry</var></a></td>
463    <td>horizontal and vertical density of the image</td>
464  </tr>
465
466  <tr>
467    <td><a href="command-line-options.html#depth">-depth <var>value</var></a></td>
468    <td>image depth</td>
469  </tr>
470
471  <tr>
472    <td><a href="command-line-options.html#despeckle">-despeckle</a></td>
473    <td>reduce the speckles within an image</td>
474  </tr>
475
476  <tr>
477    <td><a href="command-line-options.html#direction">-direction <var>type</var></a></td>
478    <td>render text right-to-left or left-to-right</td>
479  </tr>
480
481  <tr>
482    <td><a href="command-line-options.html#display">-display <var>server</var></a></td>
483    <td>get image or font from this X server</td>
484  </tr>
485
486  <tr>
487    <td><a href="command-line-options.html#dispose">-dispose <var>method</var></a></td>
488    <td>layer disposal method</td>
489  </tr>
490
491  <tr>
492    <td><a href="command-line-options.html#distribute-cache">-distribute-cache <var>port</var></a></td>
493    <td>launch a distributed pixel cache server</td>
494  </tr>
495
496  <tr>
497    <td><a href="command-line-options.html#distort">-distort <var>type coefficients</var></a></td>
498    <td>distort image</td>
499  </tr>
500
501  <tr>
502    <td><a href="command-line-options.html#dither">-dither  <var>method</var></a></td>
503    <td>apply error diffusion to image</td>
504  </tr>
505
506  <tr>
507    <td><a href="command-line-options.html#draw">-draw <var>string</var></a></td>
508    <td>annotate the image with a graphic primitive</td>
509  </tr>
510
511  <tr>
512    <td><a href="command-line-options.html#duplicate">-duplicate <var>count,indexes</var></a></td>
513    <td>duplicate an image one or more times</td>
514  </tr>
515
516  <tr>
517    <td><a href="command-line-options.html#edge">-edge <var>radius</var></a></td>
518    <td>apply a filter to detect edges in the image</td>
519  </tr>
520
521  <tr>
522    <td><a href="command-line-options.html#emboss">-emboss <var>radius</var></a></td>
523    <td>emboss an image</td>
524  </tr>
525
526  <tr>
527    <td><a href="command-line-options.html#encipher">-encipher <var>filename</var></a></td>
528    <td>convert plain pixels to cipher pixels</td>
529  </tr>
530
531  <tr>
532    <td><a href="command-line-options.html#encoding">-encoding <var>type</var></a></td>
533    <td>text encoding type</td>
534  </tr>
535
536  <tr>
537    <td><a href="command-line-options.html#endian">-endian <var>type</var></a></td>
538    <td>endianness (MSB or LSB) of the image</td>
539  </tr>
540
541  <tr>
542    <td><a href="command-line-options.html#enhance">-enhance</a></td>
543    <td>apply a digital filter to enhance a noisy image</td>
544  </tr>
545
546  <tr>
547    <td><a href="command-line-options.html#equalize">-equalize</a></td>
548    <td>perform histogram equalization to an image</td>
549  </tr>
550
551  <tr>
552    <td><a href="command-line-options.html#evaluate">-evaluate <var>operator value</var></a></td>
553    <td>evaluate an arithmetic, relational, or logical expression</td>
554  </tr>
555
556  <tr>
557    <td><a href="command-line-options.html#evaluate-sequence">-evaluate-sequence <var>operator</var></a></td>
558    <td>evaluate an arithmetic, relational, or logical expression for an image sequence</td>
559  </tr>
560
561  <tr>
562    <td><a href="command-line-options.html#extent">-extent <var>geometry</var></a></td>
563    <td>set the image size</td>
564  </tr>
565
566  <tr>
567    <td><a href="command-line-options.html#extract">-extract <var>geometry</var></a></td>
568    <td>extract area from image</td>
569  </tr>
570
571  <tr>
572    <td><a href="command-line-options.html#family">-family <var>name</var></a></td>
573    <td>render text with this font family</td>
574  </tr>
575
576  <tr>
577    <td><a href="command-line-options.html#features">-features <var>distance</var></a></td>
578    <td>analyze image features (e.g. contract, correlations, etc.).</td>
579  </tr>
580
581  <tr>
582    <td><a href="command-line-options.html#fft">-fft</a></td>
583    <td>implements the discrete Fourier transform (DFT)</td>
584  </tr>
585
586  <tr>
587    <td><a href="command-line-options.html#fill">-fill <var>color</var></a></td>
588    <td>color to use when filling a graphic primitive</td>
589  </tr>
590
591  <tr>
592    <td><a href="command-line-options.html#filter">-filter <var>type</var></a></td>
593    <td>use this filter when resizing an image</td>
594  </tr>
595
596  <tr>
597    <td><a href="command-line-options.html#flatten">-flatten</a></td>
598    <td>flatten a sequence of images</td>
599  </tr>
600
601  <tr>
602    <td><a href="command-line-options.html#flip">-flip</a></td>
603    <td>flip image in the vertical direction</td>
604  </tr>
605
606  <tr>
607    <td><a href="command-line-options.html#floodfill">-floodfill <var>geometry color</var></a></td>
608    <td>floodfill the image with color</td>
609  </tr>
610
611  <tr>
612    <td><a href="command-line-options.html#flop">-flop</a></td>
613    <td>flop image in the horizontal direction</td>
614  </tr>
615
616  <tr>
617    <td><a href="command-line-options.html#font">-font <var>name</var></a></td>
618    <td>render text with this font</td>
619  </tr>
620
621  <tr>
622    <td><a href="command-line-options.html#format_identify_">-format <var>string</var></a></td>
623    <td>output formatted image characteristics</td>
624  </tr>
625
626  <tr>
627    <td><a href="command-line-options.html#frame">-frame <var>geometry</var></a></td>
628    <td>surround image with an ornamental border</td>
629  </tr>
630
631  <tr>
632    <td><a href="command-line-options.html#function">-function <var>name</var></a></td>
633    <td>apply a function to the image</td>
634  </tr>
635
636  <tr>
637    <td><a href="command-line-options.html#fuzz">-fuzz <var>distance</var></a></td>
638    <td>colors within this distance are considered equal</td>
639  </tr>
640
641  <tr>
642    <td><a href="command-line-options.html#fx">-fx <var>expression</var></a></td>
643    <td>apply mathematical expression to an image channel(s)</td>
644  </tr>
645
646  <tr>
647    <td><a href="command-line-options.html#gamma">-gamma <var>value</var></a></td>
648    <td>level of gamma correction</td>
649  </tr>
650
651  <tr>
652    <td><a href="command-line-options.html#gaussian-blur">-gaussian-blur <var>geometry</var></a></td>
653    <td>reduce image noise and reduce detail levels</td>
654  </tr>
655
656  <tr>
657    <td><a href="command-line-options.html#geometry">-geometry <var>geometry</var></a></td>
658    <td>preferred size or location of the image</td>
659  </tr>
660
661  <tr>
662    <td><a href="command-line-options.html#gravity">-gravity <var>type</var></a></td>
663    <td>horizontal and vertical text placement</td>
664  </tr>
665
666  <tr>
667    <td><a href="command-line-options.html#grayscale">-grayscale <var>method</var></a></td>
668    <td>convert image to grayscale</td>
669  </tr>
670
671  <tr>
672    <td><a href="command-line-options.html#green-primary">-green-primary <var>point</var></a></td>
673    <td>chromaticity green primary point</td>
674  </tr>
675
676  <tr>
677    <td><a href="command-line-options.html#help">-help</a></td>
678    <td>print program options</td>
679  </tr>
680
681  <tr>
682    <td><a href="command-line-options.html#hough-lines">-hough-lines <var>geometry</var></a></td>
683    <td>identify lines in the image</td>
684  </tr>
685
686  <tr>
687    <td><a href="command-line-options.html#identify">-identify</a></td>
688    <td>identify the format and characteristics of the image</td>
689  </tr>
690
691  <tr>
692    <td><a href="command-line-options.html#ift">-ift</a></td>
693    <td>implements the inverse discrete Fourier transform (DFT)</td>
694  </tr>
695
696  <tr>
697    <td><a href="command-line-options.html#implode">-implode <var>amount</var></a></td>
698    <td>implode image pixels about the center</td>
699  </tr>
700
701  <tr>
702    <td><a href="command-line-options.html#insert">-insert <var>index</var></a></td>
703    <td>insert last image into the image sequence</td>
704  </tr>
705
706  <tr>
707    <td><a href="command-line-options.html#intensity">-intensity <var>method</var></a></td>
708    <td>method to generate an intensity value from a pixel</td>
709  </tr>
710
711  <tr>
712    <td><a href="command-line-options.html#intent">-intent <var>type</var></a></td>
713    <td>type of rendering intent when managing the image color</td>
714  </tr>
715
716  <tr>
717    <td><a href="command-line-options.html#interlace">-interlace <var>type</var></a></td>
718    <td>type of image interlacing scheme</td>
719  </tr>
720
721  <tr>
722    <td><a href="command-line-options.html#interline-spacing">-interline-spacing <var>value</var></a></td>
723    <td>the space between two text lines</td>
724  </tr>
725
726  <tr>
727    <td><a href="command-line-options.html#interpolate">-interpolate <var>method</var></a></td>
728    <td>pixel color interpolation method</td>
729  </tr>
730
731  <tr>
732    <td><a href="command-line-options.html#interword-spacing">-interword-spacing <var>value</var></a></td>
733    <td>the space between two words</td>
734  </tr>
735
736  <tr>
737    <td><a href="command-line-options.html#kerning">-kerning <var>value</var></a></td>
738    <td>the space between two characters</td>
739  </tr>
740
741  <tr>
742    <td><a href="command-line-options.html#kuwahara">-kuwahara <var>geometry</var></a></td>
743    <td>edge preserving noise reduction filter</td>
744  </tr>
745
746  <tr>
747    <td><a href="command-line-options.html#label">-label <var>string</var></a></td>
748    <td>assign a label to an image</td>
749  </tr>
750
751  <tr>
752    <td><a href="command-line-options.html#lat">-lat <var>geometry</var></a></td>
753    <td>local adaptive thresholding</td>
754  </tr>
755
756  <tr>
757    <td><a href="command-line-options.html#layers">-layers <var>method</var></a></td>
758    <td>optimize or compare image layers</td>
759  </tr>
760
761  <tr>
762    <td><a href="command-line-options.html#level">-level <var>value</var></a></td>
763    <td>adjust the level of image contrast</td>
764  </tr>
765
766  <tr>
767    <td><a href="command-line-options.html#limit">-limit <var>type value</var></a></td>
768    <td>pixel cache resource limit</td>
769  </tr>
770
771  <tr>
772    <td><a href="command-line-options.html#linear-stretch">-linear-stretch <var>geometry</var></a></td>
773    <td>linear with saturation histogram stretch</td>
774  </tr>
775
776  <tr>
777    <td><a href="command-line-options.html#liquid-rescale">-liquid-rescale <var>geometry</var></a></td>
778    <td>rescale image with seam-carving</td>
779  </tr>
780
781  <tr>
782    <td><a href="command-line-options.html#list">-list <var>type</var></a></td>
783    <td>Color, Configure, Delegate, Format, Magic, Module, Resource, or Type</td>
784  </tr>
785
786  <tr>
787    <td><a href="command-line-options.html#log">-log <var>format</var></a></td>
788    <td>format of debugging information</td>
789  </tr>
790
791  <tr>
792    <td><a href="command-line-options.html#loop">-loop <var>iterations</var></a></td>
793    <td>add Netscape loop extension to your GIF animation</td>
794  </tr>
795
796  <tr>
797    <td><a href="command-line-options.html#mask">-mask <var>filename</var></a></td>
798    <td>associate a mask with the image</td>
799  </tr>
800
801  <tr>
802    <td><a href="command-line-options.html#mattecolor">-mattecolor <var>color</var></a></td>
803    <td>frame color</td>
804  </tr>
805
806  <tr>
807    <td><a href="command-line-options.html#median">-median <var>radius</var></a></td>
808    <td>apply a median filter to the image</td>
809  </tr>
810
811  <tr>
812    <td><a href="command-line-options.html#mean-shift">-mean-shift <var>geometry</var></a></td>
813    <td>delineate arbitrarily shaped clusters in the image</td>
814  </tr>
815
816  <tr>
817    <td><a href="command-line-options.html#metric">-metric <var>type</var></a></td>
818    <td>measure differences between images with this metric</td>
819  </tr>
820
821  <tr>
822    <td><a href="command-line-options.html#mode">-mode <var>radius</var></a></td>
823    <td>make each pixel the 'predominant color' of the neighborhood</td>
824  </tr>
825
826  <tr>
827    <td><a href="command-line-options.html#modulate">-modulate <var>value</var></a></td>
828    <td>vary the brightness, saturation, and hue</td>
829  </tr>
830
831  <tr>
832    <td><a href="command-line-options.html#moments">-moments</a></td>
833    <td>display image moments.</td>
834  </tr>
835
836  <tr>
837    <td><a href="command-line-options.html#monitor">-monitor</a></td>
838    <td>monitor progress</td>
839  </tr>
840
841  <tr>
842    <td><a href="command-line-options.html#monochrome">-monochrome</a></td>
843    <td>transform image to black and white</td>
844  </tr>
845
846  <tr>
847    <td><a href="command-line-options.html#morph">-morph <var>value</var></a></td>
848    <td>morph an image sequence</td>
849  </tr>
850
851  <tr>
852    <td><a href="command-line-options.html#morphology">-morphology <var>method</var></a> <var>kernel</var></td>
853    <td>apply a morphology method to the image</td>
854  </tr>
855
856  <tr>
857    <td><a href="command-line-options.html#motion-blur">-motion-blur <var>geometry</var></a></td>
858    <td>simulate motion blur</td>
859  </tr>
860
861  <tr>
862    <td><a href="command-line-options.html#negate">-negate</a></td>
863    <td>replace each pixel with its complementary color </td>
864  </tr>
865
866  <tr>
867    <td><a href="command-line-options.html#noise">-noise <var>radius</var></a></td>
868    <td>add or reduce noise in an image</td>
869  </tr>
870
871  <tr>
872    <td><a href="command-line-options.html#normalize">-normalize</a></td>
873    <td>transform image to span the full range of colors</td>
874  </tr>
875
876  <tr>
877    <td><a href="command-line-options.html#opaque">-opaque <var>color</var></a></td>
878    <td>change this color to the fill color</td>
879  </tr>
880
881  <tr>
882    <td><a href="command-line-options.html#ordered-dither">-ordered-dither <var>NxN</var></a></td>
883    <td>ordered dither the image</td>
884  </tr>
885
886  <tr>
887    <td><a href="command-line-options.html#orient">-orient <var>type</var></a></td>
888    <td>image orientation</td>
889  </tr>
890
891  <tr>
892    <td><a href="command-line-options.html#page">-page <var>geometry</var></a></td>
893    <td>size and location of an image canvas (setting)</td>
894  </tr>
895
896  <tr>
897    <td><a href="command-line-options.html#paint">-paint <var>radius</var></a></td>
898    <td>simulate an oil painting</td>
899  </tr>
900
901  <tr>
902    <td><a href="command-line-options.html#perceptible">-perceptible</a></td>
903    <td>set each pixel whose value is less than |<var>epsilon</var>| to <var>-epsilon</var> or <var>epsilon</var> (whichever is closer) otherwise the pixel value remains unchanged.</td>
904  </tr>
905
906  <tr>
907    <td><a href="command-line-options.html#ping">-ping</a></td>
908    <td>efficiently determine image attributes</td>
909  </tr>
910
911  <tr>
912    <td><a href="command-line-options.html#pointsize">-pointsize <var>value</var></a></td>
913    <td>font point size</td>
914  </tr>
915
916  <tr>
917    <td><a href="command-line-options.html#polaroid">-polaroid <var>angle</var></a></td>
918    <td>simulate a Polaroid picture</td>
919  </tr>
920
921  <tr>
922    <td><a href="command-line-options.html#poly">-poly <var>terms</var></a></td>
923    <td>build a polynomial from the image sequence and the corresponding terms (coefficients and degree pairs).</td>
924  </tr>
925
926  <tr>
927    <td><a href="command-line-options.html#posterize">-posterize <var>levels</var></a></td>
928    <td>reduce the image to a limited number of color levels</td>
929  </tr>
930
931  <tr>
932    <td><a href="command-line-options.html#precision">-precision <var>value</var></a></td>
933    <td>set the maximum number of significant digits to be printed</td>
934  </tr>
935
936  <tr>
937    <td><a href="command-line-options.html#preview">-preview <var>type</var></a></td>
938    <td>image preview type</td>
939  </tr>
940
941  <tr>
942    <td><a href="command-line-options.html#print">-print <var>string</var></a></td>
943    <td>interpret string and print to console</td>
944  </tr>
945
946  <tr>
947    <td><a href="command-line-options.html#process">-process <var>image-filter</var></a></td>
948    <td>process the image with a custom image filter</td>
949  </tr>
950
951  <tr>
952    <td><a href="command-line-options.html#profile">-profile <var>filename</var></a></td>
953    <td>add, delete, or apply an image profile</td>
954  </tr>
955
956  <tr>
957    <td><a href="command-line-options.html#quality">-quality <var>value</var></a></td>
958    <td>JPEG/MIFF/PNG compression level</td>
959  </tr>
960
961  <tr>
962    <td><a href="command-line-options.html#quantize">-quantize <var>colorspace</var></a></td>
963    <td>reduce image colors in this colorspace</td>
964  </tr>
965
966  <tr>
967    <td><a href="command-line-options.html#quiet">-quiet</a></td>
968    <td>suppress all warning messages</td>
969  </tr>
970
971  <tr>
972    <td><a href="command-line-options.html#radial-blur">-radial-blur <var>angle</var></a></td>
973    <td>radial blur the image</td>
974  </tr>
975
976  <tr>
977    <td><a href="command-line-options.html#raise">-raise <var>value</var></a></td>
978    <td>lighten/darken image edges to create a 3-D effect</td>
979  </tr>
980
981  <tr>
982    <td><a href="command-line-options.html#random-threshold">-random-threshold <var>low,high</var></a></td>
983    <td>random threshold the image</td>
984  </tr>
985
986  <tr>
987    <td><a href="command-line-options.html#red-primary">-red-primary <var>point</var></a></td>
988    <td>chromaticity red primary point</td>
989  </tr>
990
991  <tr>
992    <td><a href="command-line-options.html#regard-warnings">-regard-warnings</a></td>
993    <td>pay attention to warning messages.</td>
994  </tr>
995
996  <tr>
997    <td><a href="command-line-options.html#region">-region <var>geometry</var></a></td>
998    <td>apply options to a portion of the image</td>
999  </tr>
1000
1001  <tr>
1002    <td><a href="command-line-options.html#remap">-remap <var>filename</var></a></td>
1003    <td>transform image colors to match this set of colors</td>
1004  </tr>
1005
1006  <tr>
1007    <td><a href="command-line-options.html#render">-render</a></td>
1008    <td>render vector graphics</td>
1009  </tr>
1010
1011  <tr>
1012    <td><a href="command-line-options.html#repage">-repage <var>geometry</var></a></td>
1013    <td>size and location of an image canvas</td>
1014  </tr>
1015
1016  <tr>
1017    <td><a href="command-line-options.html#resample">-resample <var>geometry</var></a></td>
1018    <td>change the resolution of an image</td>
1019  </tr>
1020
1021  <tr>
1022    <td><a href="command-line-options.html#resize">-resize <var>geometry</var></a></td>
1023    <td>resize the image</td>
1024  </tr>
1025
1026  <tr>
1027    <td><a href="command-line-options.html#respect-parentheses">-respect-parentheses</a></td>
1028    <td>settings remain in effect until parenthesis boundary.</td>
1029  </tr>
1030
1031  <tr>
1032    <td><a href="command-line-options.html#roll">-roll <var>geometry</var></a></td>
1033    <td>roll an image vertically or horizontally</td>
1034  </tr>
1035
1036  <tr>
1037    <td><a href="command-line-options.html#rotate">-rotate <var>degrees</var></a></td>
1038    <td>apply Paeth rotation to the image</td>
1039  </tr>
1040
1041  <tr>
1042    <td><a href="command-line-options.html#sample">-sample <var>geometry</var></a></td>
1043    <td>scale image with pixel sampling</td>
1044  </tr>
1045
1046  <tr>
1047    <td><a href="command-line-options.html#sampling-factor">-sampling-factor <var>geometry</var></a></td>
1048    <td>horizontal and vertical sampling factor</td>
1049  </tr>
1050
1051  <tr>
1052    <td><a href="command-line-options.html#scale">-scale <var>geometry</var></a></td>
1053    <td>scale the image</td>
1054  </tr>
1055
1056  <tr>
1057    <td><a href="command-line-options.html#scene">-scene <var>value</var></a></td>
1058    <td>image scene number</td>
1059  </tr>
1060
1061  <tr>
1062    <td><a href="command-line-options.html#seed">-seed <var>value</var></a></td>
1063    <td>seed a new sequence of pseudo-random numbers</td>
1064  </tr>
1065
1066  <tr>
1067    <td><a href="command-line-options.html#segment">-segment <var>values</var></a></td>
1068    <td>segment an image</td>
1069  </tr>
1070
1071  <tr>
1072    <td><a href="command-line-options.html#threshold">-selective-blur <var>geometry</var></a></td>
1073    <td>selectively blur pixels within a contrast threshold</td>
1074  </tr>
1075
1076  <tr>
1077    <td><a href="command-line-options.html#separate">-separate</a></td>
1078    <td>separate an image channel into a grayscale image</td>
1079  </tr>
1080
1081  <tr>
1082    <td><a href="command-line-options.html#sepia-tone">-sepia-tone <var>threshold</var></a></td>
1083    <td>simulate a sepia-toned photo</td>
1084  </tr>
1085
1086  <tr>
1087    <td><a href="command-line-options.html#set">-set <var>attribute value</var></a></td>
1088    <td>set an image attribute</td>
1089  </tr>
1090
1091  <tr>
1092    <td><a href="command-line-options.html#shade">-shade <var>degrees</var></a></td>
1093    <td>shade the image using a distant light source</td>
1094  </tr>
1095
1096  <tr>
1097    <td><a href="command-line-options.html#shadow">-shadow <var>geometry</var></a></td>
1098    <td>simulate an image shadow</td>
1099  </tr>
1100
1101  <tr>
1102    <td><a href="command-line-options.html#sharpen">-sharpen <var>geometry</var></a></td>
1103    <td>sharpen the image</td>
1104  </tr>
1105
1106  <tr>
1107    <td><a href="command-line-options.html#shave">-shave <var>geometry</var></a></td>
1108    <td>shave pixels from the image edges</td>
1109  </tr>
1110
1111  <tr>
1112    <td><a href="command-line-options.html#shear">-shear <var>geometry</var></a></td>
1113    <td>slide one edge of the image along the X or Y axis</td>
1114  </tr>
1115
1116  <tr>
1117    <td><a href="command-line-options.html#sigmoidal">-sigmoidal-contrast <var>geometry</var></a></td>
1118    <td>increase the contrast without saturating highlights or shadows</td>
1119  </tr>
1120
1121  <tr>
1122    <td><a href="command-line-options.html#smush">-smush <var>offset</var></a></td>
1123    <td>smush an image sequence together</td>
1124  </tr>
1125
1126  <tr>
1127    <td><a href="command-line-options.html#size">-size <var>geometry</var></a></td>
1128    <td>width and height of image</td>
1129  </tr>
1130
1131  <tr>
1132    <td><a href="command-line-options.html#sketch">-sketch <var>geometry</var></a></td>
1133    <td>simulate a pencil sketch</td>
1134  </tr>
1135
1136  <tr>
1137    <td><a href="command-line-options.html#solarize">-solarize <var>threshold</var></a></td>
1138    <td>negate all pixels above the threshold level</td>
1139  </tr>
1140
1141  <tr>
1142    <td><a href="command-line-options.html#sort-pixels">-sort-pixels</a></td>
1143    <td>sorts pixels within each scanline in ascending order of intensity</td>
1144  </tr>
1145
1146  <tr>
1147    <td><a href="command-line-options.html#splice">-splice <var>geometry</var></a></td>
1148    <td>splice the background color into the image</td>
1149  </tr>
1150
1151  <tr>
1152    <td><a href="command-line-options.html#spread">-spread <var>radius</var></a></td>
1153    <td>displace image pixels by a random amount</td>
1154  </tr>
1155
1156  <tr>
1157    <td><a href="command-line-options.html#statistic">-statistic <var>type</var> <var>geometry</var></a></td>
1158    <td>replace each pixel with corresponding statistic from the neighborhood</td>
1159  </tr>
1160
1161  <tr>
1162    <td><a href="command-line-options.html#strip">-strip</a></td>
1163    <td>strip image of all profiles and comments</td>
1164  </tr>
1165
1166  <tr>
1167    <td><a href="command-line-options.html#stroke">-stroke <var>color</var></a></td>
1168    <td>graphic primitive stroke color</td>
1169  </tr>
1170
1171  <tr>
1172    <td><a href="command-line-options.html#strokewidth">-strokewidth <var>value</var></a></td>
1173    <td>graphic primitive stroke width</td>
1174  </tr>
1175
1176  <tr>
1177    <td><a href="command-line-options.html#stretch">-stretch <var>type</var></a></td>
1178    <td>render text with this font stretch</td>
1179  </tr>
1180
1181  <tr>
1182    <td><a href="command-line-options.html#style">-style <var>type</var></a></td>
1183    <td>render text with this font style</td>
1184  </tr>
1185
1186  <tr>
1187    <td><a href="command-line-options.html#swap">-swap <var>indexes</var></a></td>
1188    <td>swap two images in the image sequence</td>
1189  </tr>
1190
1191  <tr>
1192    <td><a href="command-line-options.html#swirl">-swirl <var>degrees</var></a></td>
1193    <td>swirl image pixels about the center</td>
1194  </tr>
1195
1196  <tr>
1197    <td><a href="command-line-options.html#synchronize">-synchronize</a></td>
1198    <td>synchronize image to storage device</td>
1199  </tr>
1200
1201  <tr>
1202    <td><a href="command-line-options.html#taint">-taint</a></td>
1203    <td>mark the image as modified</td>
1204  </tr>
1205
1206  <tr>
1207    <td><a href="command-line-options.html#texture">-texture <var>filename</var></a></td>
1208    <td>name of texture to tile onto the image background</td>
1209  </tr>
1210
1211  <tr>
1212    <td><a href="command-line-options.html#threshold">-threshold <var>value</var></a></td>
1213    <td>threshold the image</td>
1214  </tr>
1215
1216  <tr>
1217    <td><a href="command-line-options.html#thumbnail">-thumbnail <var>geometry</var></a></td>
1218    <td>create a thumbnail of the image</td>
1219  </tr>
1220
1221  <tr>
1222    <td><a href="command-line-options.html#tile">-tile <var>filename</var></a></td>
1223    <td>tile image when filling a graphic primitive</td>
1224  </tr>
1225
1226  <tr>
1227    <td><a href="command-line-options.html#tile-offset">-tile-offset <var>geometry</var></a></td>
1228    <td>set the image tile offset</td>
1229  </tr>
1230
1231  <tr>
1232    <td><a href="command-line-options.html#tint">-tint <var>value</var></a></td>
1233    <td>tint the image with the fill color</td>
1234  </tr>
1235
1236  <tr>
1237    <td><a href="command-line-options.html#transform">-transform</a></td>
1238    <td>affine transform image</td>
1239  </tr>
1240
1241  <tr>
1242    <td><a href="command-line-options.html#transparent">-transparent <var>color</var></a></td>
1243    <td>make this color transparent within the image</td>
1244  </tr>
1245
1246  <tr>
1247    <td><a href="command-line-options.html#transparent-color">-transparent-color <var>color</var></a></td>
1248    <td>transparent color</td>
1249  </tr>
1250
1251  <tr>
1252    <td><a href="command-line-options.html#transpose">-transpose</a></td>
1253    <td>flip image in the vertical direction and rotate 90 degrees</td>
1254  </tr>
1255
1256  <tr>
1257    <td><a href="command-line-options.html#transverse">-transverse</a></td>
1258    <td>flop image in the horizontal direction and rotate 270 degrees</td>
1259  </tr>
1260
1261  <tr>
1262    <td><a href="command-line-options.html#treedepth">-treedepth <var>value</var></a></td>
1263    <td>color tree depth</td>
1264  </tr>
1265
1266  <tr>
1267    <td><a href="command-line-options.html#trim">-trim</a></td>
1268    <td>trim image edges</td>
1269  </tr>
1270
1271  <tr>
1272    <td><a href="command-line-options.html#type">-type <var>type</var></a></td>
1273    <td>image type</td>
1274  </tr>
1275
1276  <tr>
1277    <td><a href="command-line-options.html#undercolor">-undercolor <var>color</var></a></td>
1278    <td>annotation bounding box color</td>
1279  </tr>
1280
1281  <tr>
1282    <td><a href="command-line-options.html#unique-colors">-unique-colors</a></td>
1283    <td>discard all but one of any pixel color.</td>
1284  </tr>
1285
1286  <tr>
1287    <td><a href="command-line-options.html#units">-units <var>type</var></a></td>
1288    <td>the units of image resolution</td>
1289  </tr>
1290
1291  <tr>
1292    <td><a href="command-line-options.html#unsharp">-unsharp <var>geometry</var></a></td>
1293    <td>sharpen the image</td>
1294  </tr>
1295
1296  <tr>
1297    <td><a href="command-line-options.html#verbose">-verbose</a></td>
1298    <td>print detailed information about the image</td>
1299  </tr>
1300
1301  <tr>
1302    <td><a href="command-line-options.html#version">-version</a></td>
1303    <td>print version information</td>
1304  </tr>
1305
1306  <tr>
1307    <td><a href="command-line-options.html#view">-view</a></td>
1308    <td>FlashPix viewing transforms</td>
1309  </tr>
1310
1311  <tr>
1312    <td><a href="command-line-options.html#vignette">-vignette <var>geometry</var></a></td>
1313    <td>soften the edges of the image in vignette style</td>
1314  </tr>
1315
1316  <tr>
1317    <td><a href="command-line-options.html#virtual-pixel">-virtual-pixel <var>method</var></a></td>
1318    <td>access method for pixels outside the boundaries of the image</td>
1319  </tr>
1320
1321  <tr>
1322    <td><a href="command-line-options.html#wave">-wave <var>geometry</var></a></td>
1323    <td>alter an image along a sine wave</td>
1324  </tr>
1325
1326  <tr>
1327    <td><a href="command-line-options.html#wavelet">-wavelet-denoise <var>threshold</var></a></td>
1328    <td>removes noise from the image using a wavelet transform</td>
1329  </tr>
1330
1331  <tr>
1332    <td><a href="command-line-options.html#weight">-weight <var>type</var></a></td>
1333    <td>render text with this font weight</td>
1334  </tr>
1335
1336  <tr>
1337    <td><a href="command-line-options.html#white-point">-white-point <var>point</var></a></td>
1338    <td>chromaticity white point</td>
1339  </tr>
1340
1341  <tr>
1342    <td><a href="command-line-options.html#white-threshold">-white-threshold <var>value</var></a></td>
1343    <td>force all pixels above the threshold into white</td>
1344  </tr>
1345
1346  <tr>
1347    <td><a href="command-line-options.html#write">-write <var>filename</var></a></td>
1348    <td>write images to this file</td>
1349  </tr>
1350</table>
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