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7<head>
8 <meta name="google-site-verification" content="_bMOCDpkx9ZAzBwb2kF3PRHbfUUdFj2uO8Jd1AXArz4" />
9 <title>ImageMagick: Command-line Tools: Convert</title>
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11 <meta name="application-name" content="ImageMagick"/>
12 <meta name="description" content="ImageMagick® is a software suite to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats (over 200) including PNG, JPEG, JPEG-2000, GIF, WebP, Postscript, PDF, and SVG. Use ImageMagick to resize, flip, mirror, rotate, distort, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves."/>
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42 <a class="magick-nav-item " href="../index.html">Home</a>
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54<div class="magick-header">
55<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>
56
57<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>
58
59<pre>
60magick rose.jpg rose.png
61</pre>
62
63<p>Next, we reduce the image size before it is written to the PNG format:</p>
64
65<pre>
66magick rose.jpg -resize 50% rose.png
67</pre>
68
69<ul>
70 <a href="../images/rose.jpg">
71 <img src="../images/rose.jpg" width="70" height="46" alt="rose" />
72 </a>
73 <img style="margin-top:13px; margin-bottom:13px;" src="../images/right.gif" width="20" height="20" alt="==>" />
74 <a href="../images/rose.png">
75 <img style="margin-top:11px; margin-bottom:12px;" src="../images/rose.png" width="35" height="23" alt="rose" />
76 </a>
77</ul>
78
79<p>You can combine multiple image-processing operations to produce complex results:</p>
80
81<pre>
82magick -size 320x85 canvas:none -font Bookman-DemiItalic -pointsize 72 \
83 -draw "text 25,60 \'Magick\'" -channel RGBA -blur 0x6 -fill darkred -stroke magenta \
84 -draw "text 20,55 \'Magick\'" fuzzy-magick.png
85</pre>
86
87<ul>
88 <a href="../images/fuzzy-magick.png"><img src="../images/fuzzy-magick.png" width="320" height="85" alt="fuzzy-magick" /></a>
89</ul>
90
91<p>or here we resize an image with improved quality:</p>
92
93<pre>
94magick input.png -colorspace RGB +sigmoidal-contrast 11.6933 \
95 -define filter:filter=Sinc -define filter:window=Jinc -define filter:lobes=3 \
96 -resize 400% -sigmoidal-contrast 11.6933 -colorspace sRGB output.png');
97</pre>
98
99<p>You can find additional examples of using <code>magick</code> in <a href="http://www.imagemagick.org/Usage/">Examples of ImageMagick Usage</a>.</p>
100
101<h2 class="magick-header"><a id="options"></a>Option Summary</h2>
102
103<p>The <code>magick</code> command recognizes these options. Click on an option to get more details about how that option works.</p>
104
105<div class="table-responsive">
106<table class="table table-condensed table-striped">
107 <tr>
108 <td><a href="command-line-options.html#adaptive-blur">-adaptive-blur <var>geometry</var></a></td>
109 <td>adaptively blur pixels; decrease effect near edges</td>
110 </tr>
111
112 <tr>
113 <td><a href="command-line-options.html#adaptive-resize">-adaptive-resize <var>geometry</var></a></td>
114 <td>adaptively resize image with data dependent triangulation.</td>
115 </tr>
116
117 <tr>
118 <td><a href="command-line-options.html#adaptive-sharpen">-adaptive-sharpen <var>geometry</var></a></td>
119 <td>adaptively sharpen pixels; increase effect near edges</td>
120 </tr>
121
122 <tr>
123 <td><a href="command-line-options.html#adjoin">-adjoin</a></td>
124 <td>join images into a single multi-image file</td>
125 </tr>
126
127 <tr>
128 <td><a href="command-line-options.html#affine">-affine <var>matrix</var></a></td>
129 <td>affine transform matrix</td>
130 </tr>
131
132 <tr>
133 <td><a href="command-line-options.html#alpha">-alpha</a></td>
134 <td>on, activate, off, deactivate, set, opaque, copy",
135transparent, extract, background, or shape the alpha channel</td>
136 </tr>
137
138 <tr>
139 <td><a href="command-line-options.html#annotate">-annotate <var>geometry text</var></a></td>
140 <td>annotate the image with text</td>
141 </tr>
142
143 <tr>
144 <td><a href="command-line-options.html#antialias">-antialias</a></td>
145 <td>remove pixel-aliasing</td>
146 </tr>
147
148 <tr>
149 <td><a href="command-line-options.html#append">-append</a></td>
150 <td>append an image sequence</td>
151 </tr>
152
153 <tr>
154 <td><a href="command-line-options.html#authenticate">-authenticate <var>value</var></a></td>
155 <td>decipher image with this password</td>
156 </tr>
157
158 <tr>
159 <td><a href="command-line-options.html#auto-gamma">-auto-gamma</a></td>
160 <td>automagically adjust gamma level of image</td>
161 </tr>
162
163 <tr>
164 <td><a href="command-line-options.html#auto-level">-auto-level</a></td>
165 <td>automagically adjust color levels of image</td>
166 </tr>
167
168 <tr>
169 <td><a href="command-line-options.html#auto-orient">-auto-orient</a></td>
170 <td>automagically orient image</td>
171 </tr>
172
173 <tr>
174 <td><a href="command-line-options.html#background">-background <var>color</var></a></td>
175 <td>background color</td>
176 </tr>
177
178 <tr>
179 <td><a href="command-line-options.html#bench">-bench <var>iterations</var></a></td>
180 <td>measure performance</td>
181 </tr>
182
183 <tr>
184 <td><a href="command-line-options.html#bias">-bias <var>value</var></a></td>
185 <td>add bias when convolving an image</td>
186 </tr>
187
188 <tr>
189 <td><a href="command-line-options.html#black-threshold">-black-threshold <var>value</var></a></td>
190 <td>force all pixels below the threshold into black</td>
191 </tr>
192
193 <tr>
194 <td><a href="command-line-options.html#blue-primary">-blue-primary <var>point</var></a></td>
195 <td>chromaticity blue primary point</td>
196 </tr>
197
198 <tr>
199 <td><a href="command-line-options.html#blue-shift">-blue-shift <var>factor</var></a></td>
200 <td>simulate a scene at nighttime in the moonlight</td>
201 </tr>
202
203 <tr>
204 <td><a href="command-line-options.html#blur">-blur <var>geometry</var></a></td>
205 <td>reduce image noise and reduce detail levels</td>
206 </tr>
207
208 <tr>
209 <td><a href="command-line-options.html#border">-border <var>geometry</var></a></td>
210 <td>surround image with a border of color</td>
211 </tr>
212
213 <tr>
214 <td><a href="command-line-options.html#bordercolor">-bordercolor <var>color</var></a></td>
215 <td>border color</td>
216 </tr>
217
218 <tr>
219 <td><a href="command-line-options.html#brightness-contrast">-brightness-contrast <var>geometry</var></a></td>
220 <td>improve brightness / contrast of the image</td>
221 </tr>
222
223 <tr>
224 <td><a href="command-line-options.html#canny">-canny <var>geometry</var></a></td>
225 <td>use a multi-stage algorithm to detect a wide range of edges in the image</td>
226 </tr>
227
228 <tr>
229 <td><a href="command-line-options.html#caption">-caption <var>string</var></a></td>
230 <td>assign a caption to an image</td>
231 </tr>
232
233 <tr>
234 <td><a href="command-line-options.html#cdl">-cdl <var>filename</var></a></td>
235 <td>color correct with a color decision list</td>
236 </tr>
237
238 <tr>
239 <td><a href="command-line-options.html#channel">-channel <var>type</var></a></td>
240 <td>apply option to select image channels</td>
241 </tr>
242
243 <tr>
244 <td><a href="command-line-options.html#charcoal">-charcoal <var>radius</var></a></td>
245 <td>simulate a charcoal drawing</td>
246 </tr>
247
248 <tr>
249 <td><a href="command-line-options.html#chop">-chop <var>geometry</var></a></td>
250 <td>remove pixels from the image interior</td>
251 </tr>
252
253 <tr>
254 <td><a href="command-line-options.html#clamp">-clamp</a></td>
255 <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>
256 </tr>
257
258 <tr>
259 <td><a href="command-line-options.html#clip">-clip</a></td>
260 <td>clip along the first path from the 8BIM profile</td>
261 </tr>
262
263 <tr>
264 <td><a href="command-line-options.html#clip-mask">-clip-mask</a> <var>filename</var></td>
265 <td>associate clip mask with the image</td>
266 </tr>
267
268 <tr>
269 <td><a href="command-line-options.html#clip-path">-clip-path <var>id</var></a></td>
270 <td>clip along a named path from the 8BIM profile</td>
271 </tr>
272
273 <tr>
274 <td><a href="command-line-options.html#clone">-clone <var>index</var></a></td>
275 <td>clone an image</td>
276 </tr>
277
278 <tr>
279 <td><a href="command-line-options.html#clut">-clut</a></td>
280 <td>apply a color lookup table to the image</td>
281 </tr>
282
283 <tr>
284 <td><a href="command-line-options.html#connected-components">-connected-components <var>connectivity</var></a></td>
285 <td>connected-components uniquely labeled, choose from 4 or 8 way connectivity</td>
286 </tr>
287
288 <tr>
289 <td><a href="command-line-options.html#contrast-stretch">-contrast-stretch <var>geometry</var></a></td>
290 <td>improve the contrast in an image by `stretching' the range of intensity value</td>
291 </tr>
292
293 <tr>
294 <td><a href="command-line-options.html#coalesce">-coalesce</a></td>
295 <td>merge a sequence of images</td>
296 </tr>
297
298 <tr>
299 <td><a href="command-line-options.html#colorize">-colorize <var>value</var></a></td>
300 <td>colorize the image with the fill color</td>
301 </tr>
302
303 <tr>
304 <td><a href="command-line-options.html#color-matrix">-color-matrix <var>matrix</var></a></td>
305 <td>apply color correction to the image.</td>
306 </tr>
307
308 <tr>
309 <td><a href="command-line-options.html#colors">-colors <var>value</var></a></td>
310 <td>preferred number of colors in the image</td>
311 </tr>
312
313 <tr>
314 <td><a href="command-line-options.html#colorspace">-colorspace <var>type</var></a></td>
315 <td>set image colorspace</td>
316 </tr>
317
318 <tr>
319 <td><a href="command-line-options.html#combine">-combine</a></td>
320 <td>combine a sequence of images</td>
321 </tr>
322
323 <tr>
324 <td><a href="command-line-options.html#comment">-comment <var>string</var></a></td>
325 <td>annotate image with comment</td>
326 </tr>
327
328 <tr>
329 <td><a href="command-line-options.html#compare">-compare</a></td>
330 <td>compare image</td>
331 </tr>
332
333 <tr>
334 <td><a href="command-line-options.html#complex">-complex<var>operator</var></a></td>
335 <td>perform complex mathematics on an image sequence</td>
336 </tr>
337
338 <tr>
339 <td><a href="command-line-options.html#compose">-compose <var>operator</var></a></td>
340 <td>set image composite operator</td>
341 </tr>
342
343 <tr>
344 <td><a href="command-line-options.html#composite">-composite</a></td>
345 <td>composite image</td>
346 </tr>
347
348 <tr>
349 <td><a href="command-line-options.html#compress">-compress <var>type</var></a></td>
350 <td>image compression type</td>
351 </tr>
352
353 <tr>
354 <td><a href="command-line-options.html#contrast">-contrast</a></td>
355 <td>enhance or reduce the image contrast</td>
356 </tr>
357
358 <tr>
359 <td><a href="command-line-options.html#convolve">-convolve <var>coefficients</var></a></td>
360 <td>apply a convolution kernel to the image</td>
361 </tr>
362
363 <tr>
364 <td><a href="command-line-options.html#copy">-copy <var>geometry</var> <var>offset</var></a></td>
365 <td>copy pixels from one area of an image to another</td>
366 </tr>
367
368 <tr>
369 <td><a href="command-line-options.html#crop">-crop <var>geometry</var></a></td>
370 <td>crop the image</td>
371 </tr>
372
373 <tr>
374 <td><a href="command-line-options.html#cycle">-cycle <var>amount</var></a></td>
375 <td>cycle the image colormap</td>
376 </tr>
377
378 <tr>
379 <td><a href="command-line-options.html#decipher">-decipher <var>filename</var></a></td>
380 <td>convert cipher pixels to plain</td>
381 </tr>
382
383 <tr>
384 <td><a href="command-line-options.html#debug">-debug <var>events</var></a></td>
385 <td>display copious debugging information</td>
386 </tr>
387
388 <tr>
389 <td><a href="command-line-options.html#define">-define <var>format:option</var></a></td>
390 <td>define one or more image format options</td>
391 </tr>
392
393 <tr>
394 <td><a href="command-line-options.html#deconstruct">-deconstruct</a></td>
395 <td>break down an image sequence into constituent parts</td>
396 </tr>
397
398 <tr>
399 <td><a href="command-line-options.html#delay">-delay <var>value</var></a></td>
400 <td>display the next image after pausing</td>
401 </tr>
402
403 <tr>
404 <td><a href="command-line-options.html#delete">-delete <var>index</var></a></td>
405 <td>delete the image from the image sequence</td>
406 </tr>
407
408 <tr>
409 <td><a href="command-line-options.html#density">-density <var>geometry</var></a></td>
410 <td>horizontal and vertical density of the image</td>
411 </tr>
412
413 <tr>
414 <td><a href="command-line-options.html#depth">-depth <var>value</var></a></td>
415 <td>image depth</td>
416 </tr>
417
418 <tr>
419 <td><a href="command-line-options.html#despeckle">-despeckle</a></td>
420 <td>reduce the speckles within an image</td>
421 </tr>
422
423 <tr>
424 <td><a href="command-line-options.html#direction">-direction <var>type</var></a></td>
425 <td>render text right-to-left or left-to-right</td>
426 </tr>
427
428 <tr>
429 <td><a href="command-line-options.html#display">-display <var>server</var></a></td>
430 <td>get image or font from this X server</td>
431 </tr>
432
433 <tr>
434 <td><a href="command-line-options.html#dispose">-dispose <var>method</var></a></td>
435 <td>layer disposal method</td>
436 </tr>
437
438 <tr>
439 <td><a href="command-line-options.html#distribute-cache">-distribute-cache <var>port</var></a></td>
440 <td>launch a distributed pixel cache server</td>
441 </tr>
442
443 <tr>
444 <td><a href="command-line-options.html#distort">-distort <var>type coefficients</var></a></td>
445 <td>distort image</td>
446 </tr>
447
448 <tr>
449 <td><a href="command-line-options.html#dither">-dither <var>method</var></a></td>
450 <td>apply error diffusion to image</td>
451 </tr>
452
453 <tr>
454 <td><a href="command-line-options.html#draw">-draw <var>string</var></a></td>
455 <td>annotate the image with a graphic primitive</td>
456 </tr>
457
458 <tr>
459 <td><a href="command-line-options.html#duplicate">-duplicate <var>count,indexes</var></a></td>
460 <td>duplicate an image one or more times</td>
461 </tr>
462
463 <tr>
464 <td><a href="command-line-options.html#edge">-edge <var>radius</var></a></td>
465 <td>apply a filter to detect edges in the image</td>
466 </tr>
467
468 <tr>
469 <td><a href="command-line-options.html#emboss">-emboss <var>radius</var></a></td>
470 <td>emboss an image</td>
471 </tr>
472
473 <tr>
474 <td><a href="command-line-options.html#encipher">-encipher <var>filename</var></a></td>
475 <td>convert plain pixels to cipher pixels</td>
476 </tr>
477
478 <tr>
479 <td><a href="command-line-options.html#encoding">-encoding <var>type</var></a></td>
480 <td>text encoding type</td>
481 </tr>
482
483 <tr>
484 <td><a href="command-line-options.html#endian">-endian <var>type</var></a></td>
485 <td>endianness (MSB or LSB) of the image</td>
486 </tr>
487
488 <tr>
489 <td><a href="command-line-options.html#enhance">-enhance</a></td>
490 <td>apply a digital filter to enhance a noisy image</td>
491 </tr>
492
493 <tr>
494 <td><a href="command-line-options.html#equalize">-equalize</a></td>
495 <td>perform histogram equalization to an image</td>
496 </tr>
497
498 <tr>
499 <td><a href="command-line-options.html#evaluate">-evaluate <var>operator value</var></a></td>
500 <td>evaluate an arithmetic, relational, or logical expression</td>
501 </tr>
502
503 <tr>
504 <td><a href="command-line-options.html#evaluate-sequence">-evaluate-sequence <var>operator</var></a></td>
505 <td>evaluate an arithmetic, relational, or logical expression for an image sequence</td>
506 </tr>
507
508 <tr>
509 <td><a href="command-line-options.html#extent">-extent <var>geometry</var></a></td>
510 <td>set the image size</td>
511 </tr>
512
513 <tr>
514 <td><a href="command-line-options.html#extract">-extract <var>geometry</var></a></td>
515 <td>extract area from image</td>
516 </tr>
517
518 <tr>
519 <td><a href="command-line-options.html#family">-family <var>name</var></a></td>
520 <td>render text with this font family</td>
521 </tr>
522
523 <tr>
524 <td><a href="command-line-options.html#features">-features <var>distance</var></a></td>
525 <td>analyze image features (e.g. contract, correlations, etc.).</td>
526 </tr>
527
528 <tr>
529 <td><a href="command-line-options.html#fft">-fft</a></td>
530 <td>implements the discrete Fourier transform (DFT)</td>
531 </tr>
532
533 <tr>
534 <td><a href="command-line-options.html#fill">-fill <var>color</var></a></td>
535 <td>color to use when filling a graphic primitive</td>
536 </tr>
537
538 <tr>
539 <td><a href="command-line-options.html#filter">-filter <var>type</var></a></td>
540 <td>use this filter when resizing an image</td>
541 </tr>
542
543 <tr>
544 <td><a href="command-line-options.html#flatten">-flatten</a></td>
545 <td>flatten a sequence of images</td>
546 </tr>
547
548 <tr>
549 <td><a href="command-line-options.html#flip">-flip</a></td>
550 <td>flip image in the vertical direction</td>
551 </tr>
552
553 <tr>
554 <td><a href="command-line-options.html#floodfill">-floodfill <var>geometry color</var></a></td>
555 <td>floodfill the image with color</td>
556 </tr>
557
558 <tr>
559 <td><a href="command-line-options.html#flop">-flop</a></td>
560 <td>flop image in the horizontal direction</td>
561 </tr>
562
563 <tr>
564 <td><a href="command-line-options.html#font">-font <var>name</var></a></td>
565 <td>render text with this font</td>
566 </tr>
567
568 <tr>
569 <td><a href="command-line-options.html#format_identify_">-format <var>string</var></a></td>
570 <td>output formatted image characteristics</td>
571 </tr>
572
573 <tr>
574 <td><a href="command-line-options.html#frame">-frame <var>geometry</var></a></td>
575 <td>surround image with an ornamental border</td>
576 </tr>
577
578 <tr>
579 <td><a href="command-line-options.html#function">-function <var>name</var></a></td>
580 <td>apply a function to the image</td>
581 </tr>
582
583 <tr>
584 <td><a href="command-line-options.html#fuzz">-fuzz <var>distance</var></a></td>
585 <td>colors within this distance are considered equal</td>
586 </tr>
587
588 <tr>
589 <td><a href="command-line-options.html#fx">-fx <var>expression</var></a></td>
590 <td>apply mathematical expression to an image channel(s)</td>
591 </tr>
592
593 <tr>
594 <td><a href="command-line-options.html#gamma">-gamma <var>value</var></a></td>
595 <td>level of gamma correction</td>
596 </tr>
597
598 <tr>
599 <td><a href="command-line-options.html#gaussian-blur">-gaussian-blur <var>geometry</var></a></td>
600 <td>reduce image noise and reduce detail levels</td>
601 </tr>
602
603 <tr>
604 <td><a href="command-line-options.html#geometry">-geometry <var>geometry</var></a></td>
605 <td>preferred size or location of the image</td>
606 </tr>
607
608 <tr>
609 <td><a href="command-line-options.html#gravity">-gravity <var>type</var></a></td>
610 <td>horizontal and vertical text placement</td>
611 </tr>
612
613 <tr>
614 <td><a href="command-line-options.html#intensity">-grayscale <var>method</var></a></td>
615 <td>convert image to grayscale</td>
616 </tr>
617
618 <tr>
619 <td><a href="command-line-options.html#green-primary">-green-primary <var>point</var></a></td>
620 <td>chromaticity green primary point</td>
621 </tr>
622
623 <tr>
624 <td><a href="command-line-options.html#help">-help</a></td>
625 <td>print program options</td>
626 </tr>
627
628 <tr>
629 <td><a href="command-line-options.html#hough-lines">-hough-lines <var>geometry</var></a></td>
630 <td>identify lines in the image</td>
631 </tr>
632
633 <tr>
634 <td><a href="command-line-options.html#identify">-identify</a></td>
635 <td>identify the format and characteristics of the image</td>
636 </tr>
637
638 <tr>
639 <td><a href="command-line-options.html#ift">-ift</a></td>
640 <td>implements the inverse discrete Fourier transform (DFT)</td>
641 </tr>
642
643 <tr>
644 <td><a href="command-line-options.html#implode">-implode <var>amount</var></a></td>
645 <td>implode image pixels about the center</td>
646 </tr>
647
648 <tr>
649 <td><a href="command-line-options.html#insert">-insert <var>index</var></a></td>
650 <td>insert last image into the image sequence</td>
651 </tr>
652
653 <tr>
654 <td><a href="command-line-options.html#intensity">-intensity <var>method</var></a></td>
655 <td>method to generate an intensity value from a pixel</td>
656 </tr>
657
658 <tr>
659 <td><a href="command-line-options.html#intent">-intent <var>type</var></a></td>
660 <td>type of rendering intent when managing the image color</td>
661 </tr>
662
663 <tr>
664 <td><a href="command-line-options.html#interlace">-interlace <var>type</var></a></td>
665 <td>type of image interlacing scheme</td>
666 </tr>
667
668 <tr>
669 <td><a href="command-line-options.html#interline-spacing">-interline-spacing <var>value</var></a></td>
670 <td>the space between two text lines</td>
671 </tr>
672
673 <tr>
674 <td><a href="command-line-options.html#interpolate">-interpolate <var>method</var></a></td>
675 <td>pixel color interpolation method</td>
676 </tr>
677
678 <tr>
679 <td><a href="command-line-options.html#interword-spacing">-interword-spacing <var>value</var></a></td>
680 <td>the space between two words</td>
681 </tr>
682
683 <tr>
684 <td><a href="command-line-options.html#kerning">-kerning <var>value</var></a></td>
685 <td>the space between two characters</td>
686 </tr>
687
688 <tr>
689 <td><a href="command-line-options.html#kuwahara">-kuwahara <var>geometry</var></a></td>
690 <td>edge preserving noise reduction filter</td>
691 </tr>
692
693 <tr>
694 <td><a href="command-line-options.html#label">-label <var>string</var></a></td>
695 <td>assign a label to an image</td>
696 </tr>
697
698 <tr>
699 <td><a href="command-line-options.html#lat">-lat <var>geometry</var></a></td>
700 <td>local adaptive thresholding</td>
701 </tr>
702
703 <tr>
704 <td><a href="command-line-options.html#layers">-layers <var>method</var></a></td>
705 <td>optimize or compare image layers</td>
706 </tr>
707
708 <tr>
709 <td><a href="command-line-options.html#level">-level <var>value</var></a></td>
710 <td>adjust the level of image contrast</td>
711 </tr>
712
713 <tr>
714 <td><a href="command-line-options.html#limit">-limit <var>type value</var></a></td>
715 <td>pixel cache resource limit</td>
716 </tr>
717
718 <tr>
719 <td><a href="command-line-options.html#linear-stretch">-linear-stretch <var>geometry</var></a></td>
720 <td>linear with saturation histogram stretch</td>
721 </tr>
722
723 <tr>
724 <td><a href="command-line-options.html#liquid-rescale">-liquid-rescale <var>geometry</var></a></td>
725 <td>rescale image with seam-carving</td>
726 </tr>
727
728 <tr>
729 <td><a href="command-line-options.html#list">-list <var>type</var></a></td>
730 <td>Color, Configure, Delegate, Format, Magic, Module, Resource, or Type</td>
731 </tr>
732
733 <tr>
734 <td><a href="command-line-options.html#log">-log <var>format</var></a></td>
735 <td>format of debugging information</td>
736 </tr>
737
738 <tr>
739 <td><a href="command-line-options.html#loop">-loop <var>iterations</var></a></td>
740 <td>add Netscape loop extension to your GIF animation</td>
741 </tr>
742
743 <tr>
744 <td><a href="command-line-options.html#mask">-mask <var>filename</var></a></td>
745 <td>associate a mask with the image</td>
746 </tr>
747
748 <tr>
749 <td><a href="command-line-options.html#mattecolor">-mattecolor <var>color</var></a></td>
750 <td>frame color</td>
751 </tr>
752
753 <tr>
754 <td><a href="command-line-options.html#median">-median <var>radius</var></a></td>
755 <td>apply a median filter to the image</td>
756 </tr>
757
758 <tr>
759 <td><a href="command-line-options.html#mean-shift">-mean-shift <var>geometry</var></a></td>
760 <td>delineate arbitrarily shaped clusters in the image</td>
761 </tr>
762
763 <tr>
764 <td><a href="command-line-options.html#metric">-metric <var>type</var></a></td>
765 <td>measure differences between images with this metric</td>
766 </tr>
767
768 <tr>
769 <td><a href="command-line-options.html#mode">-mode <var>radius</var></a></td>
770 <td>make each pixel the 'predominant color' of the neighborhood</td>
771 </tr>
772
773 <tr>
774 <td><a href="command-line-options.html#modulate">-modulate <var>value</var></a></td>
775 <td>vary the brightness, saturation, and hue</td>
776 </tr>
777
778 <tr>
779 <td><a href="command-line-options.html#moments">-moments</a></td>
780 <td>display image moments.</td>
781 </tr>
782
783 <tr>
784 <td><a href="command-line-options.html#monitor">-monitor</a></td>
785 <td>monitor progress</td>
786 </tr>
787
788 <tr>
789 <td><a href="command-line-options.html#monochrome">-monochrome</a></td>
790 <td>transform image to black and white</td>
791 </tr>
792
793 <tr>
794 <td><a href="command-line-options.html#morph">-morph <var>value</var></a></td>
795 <td>morph an image sequence</td>
796 </tr>
797
798 <tr>
799 <td><a href="command-line-options.html#morphology">-morphology <var>method</var></a> <var>kernel</var></td>
800 <td>apply a morphology method to the image</td>
801 </tr>
802
803 <tr>
804 <td><a href="command-line-options.html#motion-blur">-motion-blur <var>geometry</var></a></td>
805 <td>simulate motion blur</td>
806 </tr>
807
808 <tr>
809 <td><a href="command-line-options.html#negate">-negate</a></td>
810 <td>replace each pixel with its complementary color </td>
811 </tr>
812
813 <tr>
814 <td><a href="command-line-options.html#noise">-noise <var>radius</var></a></td>
815 <td>add or reduce noise in an image</td>
816 </tr>
817
818 <tr>
819 <td><a href="command-line-options.html#normalize">-normalize</a></td>
820 <td>transform image to span the full range of colors</td>
821 </tr>
822
823 <tr>
824 <td><a href="command-line-options.html#opaque">-opaque <var>color</var></a></td>
825 <td>change this color to the fill color</td>
826 </tr>
827
828 <tr>
829 <td><a href="command-line-options.html#ordered-dither">-ordered-dither <var>NxN</var></a></td>
830 <td>ordered dither the image</td>
831 </tr>
832
833 <tr>
834 <td><a href="command-line-options.html#orient">-orient <var>type</var></a></td>
835 <td>image orientation</td>
836 </tr>
837
838 <tr>
839 <td><a href="command-line-options.html#page">-page <var>geometry</var></a></td>
840 <td>size and location of an image canvas (setting)</td>
841 </tr>
842
843 <tr>
844 <td><a href="command-line-options.html#paint">-paint <var>radius</var></a></td>
845 <td>simulate an oil painting</td>
846 </tr>
847
848 <tr>
849 <td><a href="command-line-options.html#perceptible">-perceptible</a></td>
850 <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>
851 </tr>
852
853 <tr>
854 <td><a href="command-line-options.html#ping">-ping</a></td>
855 <td>efficiently determine image attributes</td>
856 </tr>
857
858 <tr>
859 <td><a href="command-line-options.html#pointsize">-pointsize <var>value</var></a></td>
860 <td>font point size</td>
861 </tr>
862
863 <tr>
864 <td><a href="command-line-options.html#polaroid">-polaroid <var>angle</var></a></td>
865 <td>simulate a Polaroid picture</td>
866 </tr>
867
868 <tr>
869 <td><a href="command-line-options.html#poly">-poly <var>terms</var></a></td>
870 <td>build a polynomial from the image sequence and the corresponding terms (coefficients and degree pairs).</td>
871 </tr>
872
873 <tr>
874 <td><a href="command-line-options.html#posterize">-posterize <var>levels</var></a></td>
875 <td>reduce the image to a limited number of color levels</td>
876 </tr>
877
878 <tr>
879 <td><a href="command-line-options.html#precision">-precision <var>value</var></a></td>
880 <td>set the maximum number of significant digits to be printed</td>
881 </tr>
882
883 <tr>
884 <td><a href="command-line-options.html#preview">-preview <var>type</var></a></td>
885 <td>image preview type</td>
886 </tr>
887
888 <tr>
889 <td><a href="command-line-options.html#print">-print <var>string</var></a></td>
890 <td>interpret string and print to console</td>
891 </tr>
892
893 <tr>
894 <td><a href="command-line-options.html#process">-process <var>image-filter</var></a></td>
895 <td>process the image with a custom image filter</td>
896 </tr>
897
898 <tr>
899 <td><a href="command-line-options.html#profile">-profile <var>filename</var></a></td>
900 <td>add, delete, or apply an image profile</td>
901 </tr>
902
903 <tr>
904 <td><a href="command-line-options.html#quality">-quality <var>value</var></a></td>
905 <td>JPEG/MIFF/PNG compression level</td>
906 </tr>
907
908 <tr>
909 <td><a href="command-line-options.html#quantize">-quantize <var>colorspace</var></a></td>
910 <td>reduce image colors in this colorspace</td>
911 </tr>
912
913 <tr>
914 <td><a href="command-line-options.html#quiet">-quiet</a></td>
915 <td>suppress all warning messages</td>
916 </tr>
917
918 <tr>
919 <td><a href="command-line-options.html#radial-blur">-radial-blur <var>angle</var></a></td>
920 <td>radial blur the image</td>
921 </tr>
922
923 <tr>
924 <td><a href="command-line-options.html#raise">-raise <var>value</var></a></td>
925 <td>lighten/darken image edges to create a 3-D effect</td>
926 </tr>
927
928 <tr>
929 <td><a href="command-line-options.html#random-threshold">-random-threshold <var>low,high</var></a></td>
930 <td>random threshold the image</td>
931 </tr>
932
933 <tr>
934 <td><a href="command-line-options.html#red-primary">-red-primary <var>point</var></a></td>
935 <td>chromaticity red primary point</td>
936 </tr>
937
938 <tr>
939 <td><a href="command-line-options.html#regard-warnings">-regard-warnings</a></td>
940 <td>pay attention to warning messages.</td>
941 </tr>
942
943 <tr>
944 <td><a href="command-line-options.html#region">-region <var>geometry</var></a></td>
945 <td>apply options to a portion of the image</td>
946 </tr>
947
948 <tr>
949 <td><a href="command-line-options.html#remap">-remap <var>filename</var></a></td>
950 <td>transform image colors to match this set of colors</td>
951 </tr>
952
953 <tr>
954 <td><a href="command-line-options.html#render">-render</a></td>
955 <td>render vector graphics</td>
956 </tr>
957
958 <tr>
959 <td><a href="command-line-options.html#repage">-repage <var>geometry</var></a></td>
960 <td>size and location of an image canvas</td>
961 </tr>
962
963 <tr>
964 <td><a href="command-line-options.html#resample">-resample <var>geometry</var></a></td>
965 <td>change the resolution of an image</td>
966 </tr>
967
968 <tr>
969 <td><a href="command-line-options.html#resize">-resize <var>geometry</var></a></td>
970 <td>resize the image</td>
971 </tr>
972
973 <tr>
974 <td><a href="command-line-options.html#respect-parentheses">-respect-parentheses</a></td>
975 <td>settings remain in effect until parenthesis boundary.</td>
976 </tr>
977
978 <tr>
979 <td><a href="command-line-options.html#roll">-roll <var>geometry</var></a></td>
980 <td>roll an image vertically or horizontally</td>
981 </tr>
982
983 <tr>
984 <td><a href="command-line-options.html#rotate">-rotate <var>degrees</var></a></td>
985 <td>apply Paeth rotation to the image</td>
986 </tr>
987
988 <tr>
989 <td><a href="command-line-options.html#sample">-sample <var>geometry</var></a></td>
990 <td>scale image with pixel sampling</td>
991 </tr>
992
993 <tr>
994 <td><a href="command-line-options.html#sampling-factor">-sampling-factor <var>geometry</var></a></td>
995 <td>horizontal and vertical sampling factor</td>
996 </tr>
997
998 <tr>
999 <td><a href="command-line-options.html#scale">-scale <var>geometry</var></a></td>
1000 <td>scale the image</td>
1001 </tr>
1002
1003 <tr>
1004 <td><a href="command-line-options.html#scene">-scene <var>value</var></a></td>
1005 <td>image scene number</td>
1006 </tr>
1007
1008 <tr>
1009 <td><a href="command-line-options.html#seed">-seed <var>value</var></a></td>
1010 <td>seed a new sequence of pseudo-random numbers</td>
1011 </tr>
1012
1013 <tr>
1014 <td><a href="command-line-options.html#segment">-segment <var>values</var></a></td>
1015 <td>segment an image</td>
1016 </tr>
1017
1018 <tr>
1019 <td><a href="command-line-options.html#threshold">-selective-blur <var>geometry</var></a></td>
1020 <td>selectively blur pixels within a contrast threshold</td>
1021 </tr>
1022
1023 <tr>
1024 <td><a href="command-line-options.html#separate">-separate</a></td>
1025 <td>separate an image channel into a grayscale image</td>
1026 </tr>
1027
1028 <tr>
1029 <td><a href="command-line-options.html#sepia-tone">-sepia-tone <var>threshold</var></a></td>
1030 <td>simulate a sepia-toned photo</td>
1031 </tr>
1032
1033 <tr>
1034 <td><a href="command-line-options.html#set">-set <var>attribute value</var></a></td>
1035 <td>set an image attribute</td>
1036 </tr>
1037
1038 <tr>
1039 <td><a href="command-line-options.html#shade">-shade <var>degrees</var></a></td>
1040 <td>shade the image using a distant light source</td>
1041 </tr>
1042
1043 <tr>
1044 <td><a href="command-line-options.html#shadow">-shadow <var>geometry</var></a></td>
1045 <td>simulate an image shadow</td>
1046 </tr>
1047
1048 <tr>
1049 <td><a href="command-line-options.html#sharpen">-sharpen <var>geometry</var></a></td>
1050 <td>sharpen the image</td>
1051 </tr>
1052
1053 <tr>
1054 <td><a href="command-line-options.html#shave">-shave <var>geometry</var></a></td>
1055 <td>shave pixels from the image edges</td>
1056 </tr>
1057
1058 <tr>
1059 <td><a href="command-line-options.html#shear">-shear <var>geometry</var></a></td>
1060 <td>slide one edge of the image along the X or Y axis</td>
1061 </tr>
1062
1063 <tr>
1064 <td><a href="command-line-options.html#sigmoidal">-sigmoidal-contrast <var>geometry</var></a></td>
1065 <td>increase the contrast without saturating highlights or shadows</td>
1066 </tr>
1067
1068 <tr>
1069 <td><a href="command-line-options.html#smush">-smush <var>offset</var></a></td>
1070 <td>smush an image sequence together</td>
1071 </tr>
1072
1073 <tr>
1074 <td><a href="command-line-options.html#size">-size <var>geometry</var></a></td>
1075 <td>width and height of image</td>
1076 </tr>
1077
1078 <tr>
1079 <td><a href="command-line-options.html#sketch">-sketch <var>geometry</var></a></td>
1080 <td>simulate a pencil sketch</td>
1081 </tr>
1082
1083 <tr>
1084 <td><a href="command-line-options.html#solarize">-solarize <var>threshold</var></a></td>
1085 <td>negate all pixels above the threshold level</td>
1086 </tr>
1087
1088 <tr>
1089 <td><a href="command-line-options.html#splice">-splice <var>geometry</var></a></td>
1090 <td>splice the background color into the image</td>
1091 </tr>
1092
1093 <tr>
1094 <td><a href="command-line-options.html#spread">-spread <var>radius</var></a></td>
1095 <td>displace image pixels by a random amount</td>
1096 </tr>
1097
1098 <tr>
1099 <td><a href="command-line-options.html#statistic">-statistic <var>type</var> <var>geometry</var></a></td>
1100 <td>replace each pixel with corresponding statistic from the neighborhood</td>
1101 </tr>
1102
1103 <tr>
1104 <td><a href="command-line-options.html#strip">-strip</a></td>
1105 <td>strip image of all profiles and comments</td>
1106 </tr>
1107
1108 <tr>
1109 <td><a href="command-line-options.html#stroke">-stroke <var>color</var></a></td>
1110 <td>graphic primitive stroke color</td>
1111 </tr>
1112
1113 <tr>
1114 <td><a href="command-line-options.html#strokewidth">-strokewidth <var>value</var></a></td>
1115 <td>graphic primitive stroke width</td>
1116 </tr>
1117
1118 <tr>
1119 <td><a href="command-line-options.html#stretch">-stretch <var>type</var></a></td>
1120 <td>render text with this font stretch</td>
1121 </tr>
1122
1123 <tr>
1124 <td><a href="command-line-options.html#style">-style <var>type</var></a></td>
1125 <td>render text with this font style</td>
1126 </tr>
1127
1128 <tr>
1129 <td><a href="command-line-options.html#swap">-swap <var>indexes</var></a></td>
1130 <td>swap two images in the image sequence</td>
1131 </tr>
1132
1133 <tr>
1134 <td><a href="command-line-options.html#swirl">-swirl <var>degrees</var></a></td>
1135 <td>swirl image pixels about the center</td>
1136 </tr>
1137
1138 <tr>
1139 <td><a href="command-line-options.html#synchronize">-synchronize</a></td>
1140 <td>synchronize image to storage device</td>
1141 </tr>
1142
1143 <tr>
1144 <td><a href="command-line-options.html#taint">-taint</a></td>
1145 <td>mark the image as modified</td>
1146 </tr>
1147
1148 <tr>
1149 <td><a href="command-line-options.html#texture">-texture <var>filename</var></a></td>
1150 <td>name of texture to tile onto the image background</td>
1151 </tr>
1152
1153 <tr>
1154 <td><a href="command-line-options.html#threshold">-threshold <var>value</var></a></td>
1155 <td>threshold the image</td>
1156 </tr>
1157
1158 <tr>
1159 <td><a href="command-line-options.html#thumbnail">-thumbnail <var>geometry</var></a></td>
1160 <td>create a thumbnail of the image</td>
1161 </tr>
1162
1163 <tr>
1164 <td><a href="command-line-options.html#tile">-tile <var>filename</var></a></td>
1165 <td>tile image when filling a graphic primitive</td>
1166 </tr>
1167
1168 <tr>
1169 <td><a href="command-line-options.html#tile-offset">-tile-offset <var>geometry</var></a></td>
1170 <td>set the image tile offset</td>
1171 </tr>
1172
1173 <tr>
1174 <td><a href="command-line-options.html#tint">-tint <var>value</var></a></td>
1175 <td>tint the image with the fill color</td>
1176 </tr>
1177
1178 <tr>
1179 <td><a href="command-line-options.html#transform">-transform</a></td>
1180 <td>affine transform image</td>
1181 </tr>
1182
1183 <tr>
1184 <td><a href="command-line-options.html#transparent">-transparent <var>color</var></a></td>
1185 <td>make this color transparent within the image</td>
1186 </tr>
1187
1188 <tr>
1189 <td><a href="command-line-options.html#transparent-color">-transparent-color <var>color</var></a></td>
1190 <td>transparent color</td>
1191 </tr>
1192
1193 <tr>
1194 <td><a href="command-line-options.html#transpose">-transpose</a></td>
1195 <td>flip image in the vertical direction and rotate 90 degrees</td>
1196 </tr>
1197
1198 <tr>
1199 <td><a href="command-line-options.html#transverse">-transverse</a></td>
1200 <td>flop image in the horizontal direction and rotate 270 degrees</td>
1201 </tr>
1202
1203 <tr>
1204 <td><a href="command-line-options.html#treedepth">-treedepth <var>value</var></a></td>
1205 <td>color tree depth</td>
1206 </tr>
1207
1208 <tr>
1209 <td><a href="command-line-options.html#trim">-trim</a></td>
1210 <td>trim image edges</td>
1211 </tr>
1212
1213 <tr>
1214 <td><a href="command-line-options.html#type">-type <var>type</var></a></td>
1215 <td>image type</td>
1216 </tr>
1217
1218 <tr>
1219 <td><a href="command-line-options.html#undercolor">-undercolor <var>color</var></a></td>
1220 <td>annotation bounding box color</td>
1221 </tr>
1222
1223 <tr>
1224 <td><a href="command-line-options.html#unique-colors">-unique-colors</a></td>
1225 <td>discard all but one of any pixel color.</td>
1226 </tr>
1227
1228 <tr>
1229 <td><a href="command-line-options.html#units">-units <var>type</var></a></td>
1230 <td>the units of image resolution</td>
1231 </tr>
1232
1233 <tr>
1234 <td><a href="command-line-options.html#unsharp">-unsharp <var>geometry</var></a></td>
1235 <td>sharpen the image</td>
1236 </tr>
1237
1238 <tr>
1239 <td><a href="command-line-options.html#verbose">-verbose</a></td>
1240 <td>print detailed information about the image</td>
1241 </tr>
1242
1243 <tr>
1244 <td><a href="command-line-options.html#version">-version</a></td>
1245 <td>print version information</td>
1246 </tr>
1247
1248 <tr>
1249 <td><a href="command-line-options.html#view">-view</a></td>
1250 <td>FlashPix viewing transforms</td>
1251 </tr>
1252
1253 <tr>
1254 <td><a href="command-line-options.html#vignette">-vignette <var>geometry</var></a></td>
1255 <td>soften the edges of the image in vignette style</td>
1256 </tr>
1257
1258 <tr>
1259 <td><a href="command-line-options.html#virtual-pixel">-virtual-pixel <var>method</var></a></td>
1260 <td>access method for pixels outside the boundaries of the image</td>
1261 </tr>
1262
1263 <tr>
1264 <td><a href="command-line-options.html#wave">-wave <var>geometry</var></a></td>
1265 <td>alter an image along a sine wave</td>
1266 </tr>
1267
1268 <tr>
1269 <td><a href="command-line-options.html#wavelet">-wavelet-denoise <var>threshold</var></a></td>
1270 <td>removes noise from the image using a wavelet transform</td>
1271 </tr>
1272
1273 <tr>
1274 <td><a href="command-line-options.html#weight">-weight <var>type</var></a></td>
1275 <td>render text with this font weight</td>
1276 </tr>
1277
1278 <tr>
1279 <td><a href="command-line-options.html#white-point">-white-point <var>point</var></a></td>
1280 <td>chromaticity white point</td>
1281 </tr>
1282
1283 <tr>
1284 <td><a href="command-line-options.html#white-threshold">-white-threshold <var>value</var></a></td>
1285 <td>force all pixels above the threshold into white</td>
1286 </tr>
1287
1288 <tr>
1289 <td><a href="command-line-options.html#write">-write <var>filename</var></a></td>
1290 <td>write images to this file</td>
1291 </tr>
1292</table>
1293</div>
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