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48 <a href="../index.html">About ImageMagick</a>
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52 <a href="../www/command-line-tools.html">Command-line Tools</a>
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152 <p class="navigation-index">[<a href="#usage">Example Usage</a> • <a href="#options">Option Summary</a>]</p>
154 <div class="doc-section">
155 <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>
158 <h2><a name="usage"></a>Example Usage</h2>
159 <div class="doc-section">
161 <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>
163 <p class='crt'><span class="crtprompt"> $magick> </span><span class='crtin'>convert rose.jpg rose.png</span></p>
164 <p>Next, we reduce the image size before it is written to the PNG format:</p>
166 <p class='crt'><span class="crtprompt"> $magick> </span><span class='crtin'>convert rose.jpg -resize 50% rose.png</span></p>
168 <a href="../images/rose.jpg">
169 <img src="../images/rose.jpg" width="70" height="46" alt="rose" />
171 <img style="margin-top:13px; margin-bottom:13px;" src="../images/right.gif" width="20" height="20" alt="==>" />
172 <a href="../images/rose.png">
173 <img style="margin-top:11px; margin-bottom:12px;" src="../images/rose.png" width="35" height="23" alt="rose" />
177 <p>You can combine multiple image-processing operations to produce complex results:</p>
179 <p class='crt'><span class="crtprompt"> $magick> </span><span class='crtin'>convert -size 320x85 xc:transparent -font Bookman-DemiItalic -pointsize 72 \ <br/>
180 -draw "text 25,60 'Magick'" -channel RGBA -gaussian 0x6 -fill darkred -stroke magenta \ <br/>
181 -draw "text 20,55 'Magick'" fuzzy-magick.png</span></p>
183 <a href="../images/fuzzy-magick.png"><img src="../images/fuzzy-magick.png" width="320" height="85" alt="fuzzy-magick" /></a>
186 <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>
190 <h2><a name="options"></a>Option Summary</h2>
191 <div class="doc-section">
193 <p>The <kbd>convert</kbd> command recognizes these options. Click on an option to get more details about how that option works.</p>
198 <th align="left">Option</th>
199 <th align="left">Description</th>
203 <td valign="top"><a href="../www/command-line-options.html#adaptive-blur">-adaptive-blur <em class="option">geometry</em></a></td>
204 <td valign="top">adaptively blur pixels; decrease effect near edges</td>
208 <td valign="top"><a href="../www/command-line-options.html#adaptive-resize">-adaptive-resize <em class="option">geometry</em></a></td>
209 <td valign="top">adaptively resize image with data dependent triangulation.</td>
213 <td valign="top"><a href="../www/command-line-options.html#adaptive-sharpen">-adaptive-sharpen <em class="option">geometry</em></a></td>
214 <td valign="top">adaptively sharpen pixels; increase effect near edges</td>
218 <td valign="top"><a href="../www/command-line-options.html#adjoin">-adjoin</a></td>
219 <td valign="top">join images into a single multi-image file</td>
223 <td valign="top"><a href="../www/command-line-options.html#affine">-affine <em class="option">matrix</em></a></td>
224 <td valign="top">affine transform matrix</td>
228 <td valign="top"><a href="../www/command-line-options.html#alpha">-alpha</a></td>
229 <td valign="top">on, activate, off, deactivate, set, opaque, copy",
230 transparent, extract, background, or shape the alpha channel</td>
234 <td valign="top"><a href="../www/command-line-options.html#annotate">-annotate <em class="option">geometry text</em></a></td>
235 <td valign="top">annotate the image with text</td>
239 <td valign="top"><a href="../www/command-line-options.html#antialias">-antialias</a></td>
240 <td valign="top">remove pixel-aliasing</td>
244 <td valign="top"><a href="../www/command-line-options.html#append">-append</a></td>
245 <td valign="top">append an image sequence</td>
249 <td valign="top"><a href="../www/command-line-options.html#authenticate">-authenticate <em class="option">value</em></a></td>
250 <td valign="top">decipher image with this password</td>
254 <td valign="top"><a href="../www/command-line-options.html#auto-gamma">-auto-gamma</a></td>
255 <td valign="top">automagically adjust gamma level of image</td>
259 <td valign="top"><a href="../www/command-line-options.html#auto-level">-auto-level</a></td>
260 <td valign="top">automagically adjust color levels of image</td>
264 <td valign="top"><a href="../www/command-line-options.html#auto-orient">-auto-orient</a></td>
265 <td valign="top">automagically orient image</td>
269 <td valign="top"><a href="../www/command-line-options.html#average">-average</a></td>
270 <td valign="top">average an image sequence</td>
274 <td valign="top"><a href="../www/command-line-options.html#background">-background <em class="option">color</em></a></td>
275 <td valign="top">background color</td>
279 <td valign="top"><a href="../www/command-line-options.html#bench">-bench <em class="option">iterations</em></a></td>
280 <td valign="top">measure performance</td>
284 <td valign="top"><a href="../www/command-line-options.html#bias">-bias <em class="option">value</em></a></td>
285 <td valign="top">add bias when convolving an image</td>
289 <td valign="top"><a href="../www/command-line-options.html#black-threshold">-black-threshold <em class="option">value</em></a></td>
290 <td valign="top">force all pixels below the threshold into black</td>
294 <td valign="top"><a href="../www/command-line-options.html#blue-primary">-blue-primary <em class="option">point</em></a></td>
295 <td valign="top">chromaticity blue primary point</td>
299 <td valign="top"><a href="../www/command-line-options.html#blue-shift">-blue-shift <em class="option">factor</em></a></td>
300 <td valign="top">simulate a scene at nighttime in the moonlight</td>
304 <td valign="top"><a href="../www/command-line-options.html#blur">-blur <em class="option">geometry</em></a></td>
305 <td valign="top">reduce image noise and reduce detail levels</td>
309 <td valign="top"><a href="../www/command-line-options.html#border">-border <em class="option">geometry</em></a></td>
310 <td valign="top">surround image with a border of color</td>
314 <td valign="top"><a href="../www/command-line-options.html#bordercolor">-bordercolor <em class="option">color</em></a></td>
315 <td valign="top">border color</td>
319 <td valign="top"><a href="../www/command-line-options.html#caption">-caption <em class="option">string</em></a></td>
320 <td valign="top">assign a caption to an image</td>
324 <td valign="top"><a href="../www/command-line-options.html#cdl">-cdl <em class="option">filename</em></a></td>
325 <td valign="top">color correct with a color decision list</td>
329 <td valign="top"><a href="../www/command-line-options.html#channel">-channel <em class="option">type</em></a></td>
330 <td valign="top">apply option to select image channels</td>
334 <td valign="top"><a href="../www/command-line-options.html#charcoal">-charcoal <em class="option">radius</em></a></td>
335 <td valign="top">simulate a charcoal drawing</td>
339 <td valign="top"><a href="../www/command-line-options.html#chop">-chop <em class="option">geometry</em></a></td>
340 <td valign="top">remove pixels from the image interior</td>
344 <td valign="top"><a href="../www/command-line-options.html#clip">-clip</a></td>
345 <td valign="top">clip along the first path from the 8BIM profile</td>
349 <td valign="top"><a href="../www/command-line-options.html#clip-mask">-clip-mask</a> <em class="option">filename</em></td>
350 <td valign="top">associate clip mask with the image</td>
354 <td valign="top"><a href="../www/command-line-options.html#clip-path">-clip-path <em class="option">id</em></a></td>
355 <td valign="top">clip along a named path from the 8BIM profile</td>
359 <td valign="top"><a href="../www/command-line-options.html#clone">-clone <em class="option">index</em></a></td>
360 <td valign="top">clone an image</td>
364 <td valign="top"><a href="../www/command-line-options.html#clut">-clut</a></td>
365 <td valign="top">apply a color lookup table to the image</td>
369 <td valign="top"><a href="../www/command-line-options.html#contrast-stretch">-contrast-stretch <em class="option">geometry</em></a></td>
370 <td valign="top">improve the contrast in an image by `stretching' the range of intensity value</td>
374 <td valign="top"><a href="../www/command-line-options.html#coalesce">-coalesce</a></td>
375 <td valign="top">merge a sequence of images</td>
379 <td valign="top"><a href="../www/command-line-options.html#colorize">-colorize <em class="option">value</em></a></td>
380 <td valign="top">colorize the image with the fill color</td>
384 <td valign="top"><a href="../www/command-line-options.html#colors">-colors <em class="option">value</em></a></td>
385 <td valign="top">preferred number of colors in the image</td>
389 <td valign="top"><a href="../www/command-line-options.html#colorspace">-colorspace <em class="option">type</em></a></td>
390 <td valign="top">set image colorspace</td>
394 <td valign="top"><a href="../www/command-line-options.html#combine">-combine</a></td>
395 <td valign="top">combine a sequence of images</td>
399 <td valign="top"><a href="../www/command-line-options.html#comment">-comment <em class="option">string</em></a></td>
400 <td valign="top">annotate image with comment</td>
404 <td valign="top"><a href="../www/command-line-options.html#compose">-compose <em class="option">operator</em></a></td>
405 <td valign="top">set image composite operator</td>
409 <td valign="top"><a href="../www/command-line-options.html#composite">-composite</a></td>
410 <td valign="top">composite image</td>
414 <td valign="top"><a href="../www/command-line-options.html#compress">-compress <em class="option">type</em></a></td>
415 <td valign="top">image compression type</td>
419 <td valign="top"><a href="../www/command-line-options.html#contrast">-contrast</a></td>
420 <td valign="top">enhance or reduce the image contrast</td>
424 <td valign="top"><a href="../www/command-line-options.html#convolve">-convolve <em class="option">coefficients</em></a></td>
425 <td valign="top">apply a convolution kernel to the image</td>
429 <td valign="top"><a href="../www/command-line-options.html#crop">-crop <em class="option">geometry</em></a></td>
430 <td valign="top">crop the image</td>
434 <td valign="top"><a href="../www/command-line-options.html#cycle">-cycle <em class="option">amount</em></a></td>
435 <td valign="top">cycle the image colormap</td>
439 <td valign="top"><a href="../www/command-line-options.html#decipher">-decipher <em class="option">filename</em></a></td>
440 <td valign="top">convert cipher pixels to plain</td>
444 <td valign="top"><a href="../www/command-line-options.html#debug">-debug <em class="option">events</em></a></td>
445 <td valign="top">display copious debugging information</td>
449 <td valign="top"><a href="../www/command-line-options.html#define">-define <em class="option">format:option</em></a></td>
450 <td valign="top">define one or more image format options</td>
454 <td valign="top"><a href="../www/command-line-options.html#deconstruct">-deconstruct</a></td>
455 <td valign="top">break down an image sequence into constituent parts</td>
459 <td valign="top"><a href="../www/command-line-options.html#delay">-delay <em class="option">value</em></a></td>
460 <td valign="top">display the next image after pausing</td>
464 <td valign="top"><a href="../www/command-line-options.html#delete">-delete <em class="option">index</em></a></td>
465 <td valign="top">delete the image from the image sequence</td>
469 <td valign="top"><a href="../www/command-line-options.html#density">-density <em class="option">geometry</em></a></td>
470 <td valign="top">horizontal and vertical density of the image</td>
474 <td valign="top"><a href="../www/command-line-options.html#depth">-depth <em class="option">value</em></a></td>
475 <td valign="top">image depth</td>
479 <td valign="top"><a href="../www/command-line-options.html#despeckle">-despeckle</a></td>
480 <td valign="top">reduce the speckles within an image</td>
484 <td valign="top"><a href="../www/command-line-options.html#display">-display <em class="option">server</em></a></td>
485 <td valign="top">get image or font from this X server</td>
489 <td valign="top"><a href="../www/command-line-options.html#dispose">-dispose <em class="option">method</em></a></td>
490 <td valign="top">layer disposal method</td>
494 <td valign="top"><a href="../www/command-line-options.html#distort">-distort <em class="option">type coefficients</em></a></td>
495 <td valign="top">distort image</td>
499 <td valign="top"><a href="../www/command-line-options.html#dither">-dither <em class="option">method</em></a></td>
500 <td valign="top">apply error diffusion to image</td>
504 <td valign="top"><a href="../www/command-line-options.html#draw">-draw <em class="option">string</em></a></td>
505 <td valign="top">annotate the image with a graphic primitive</td>
509 <td valign="top"><a href="../www/command-line-options.html#edge">-edge <em class="option">radius</em></a></td>
510 <td valign="top">apply a filter to detect edges in the image</td>
514 <td valign="top"><a href="../www/command-line-options.html#emboss">-emboss <em class="option">radius</em></a></td>
515 <td valign="top">emboss an image</td>
519 <td valign="top"><a href="../www/command-line-options.html#encipher">-encipher <em class="option">filename</em></a></td>
520 <td valign="top">convert plain pixels to cipher pixels</td>
524 <td valign="top"><a href="../www/command-line-options.html#encoding">-encoding <em class="option">type</em></a></td>
525 <td valign="top">text encoding type</td>
529 <td valign="top"><a href="../www/command-line-options.html#endian">-endian <em class="option">type</em></a></td>
530 <td valign="top">endianness (MSB or LSB) of the image</td>
534 <td valign="top"><a href="../www/command-line-options.html#enhance">-enhance</a></td>
535 <td valign="top">apply a digital filter to enhance a noisy image</td>
539 <td valign="top"><a href="../www/command-line-options.html#equalize">-equalize</a></td>
540 <td valign="top">perform histogram equalization to an image</td>
544 <td valign="top"><a href="../www/command-line-options.html#evaluate">-evaluate <em class="option">operator value</em></a></td>
545 <td valign="top">evaluate an arithmetic, relational, or logical expression</td>
549 <td valign="top"><a href="../www/command-line-options.html#extent">-extent <em class="option">geometry</em></a></td>
550 <td valign="top">set the image size</td>
554 <td valign="top"><a href="../www/command-line-options.html#extract">-extract <em class="option">geometry</em></a></td>
555 <td valign="top">extract area from image</td>
559 <td valign="top"><a href="../www/command-line-options.html#family">-family <em class="option">name</em></a></td>
560 <td valign="top">render text with this font family</td>
564 <td valign="top"><a href="../www/command-line-options.html#fft">-fft</a></td>
565 <td valign="top">implments the discrete Fourier transform (DFT)</td>
569 <td valign="top"><a href="../www/command-line-options.html#fill">-fill <em class="option">color</em></a></td>
570 <td valign="top">color to use when filling a graphic primitive</td>
574 <td valign="top"><a href="../www/command-line-options.html#filter">-filter <em class="option">type</em></a></td>
575 <td valign="top">use this filter when resizing an image</td>
579 <td valign="top"><a href="../www/command-line-options.html#flatten">-flatten</a></td>
580 <td valign="top">flatten a sequence of images</td>
584 <td valign="top"><a href="../www/command-line-options.html#flip">-flip</a></td>
585 <td valign="top">flip image in the vertical direction</td>
589 <td valign="top"><a href="../www/command-line-options.html#floodfill">-floodfill <em class="option">geometry color</em></a></td>
590 <td valign="top">floodfill the image with color</td>
594 <td valign="top"><a href="../www/command-line-options.html#flop">-flop</a></td>
595 <td valign="top">flop image in the horizontal direction</td>
599 <td valign="top"><a href="../www/command-line-options.html#font">-font <em class="option">name</em></a></td>
600 <td valign="top">render text with this font</td>
604 <td valign="top"><a href="../www/command-line-options.html#format_identify_">-format <em class="option">string</em></a></td>
605 <td valign="top">output formatted image characteristics</td>
609 <td valign="top"><a href="../www/command-line-options.html#frame">-frame <em class="option">geometry</em></a></td>
610 <td valign="top">surround image with an ornamental border</td>
614 <td valign="top"><a href="../www/command-line-options.html#function">-function <em class="option">name</em></a></td>
615 <td valign="top">apply a function to the image</td>
619 <td valign="top"><a href="../www/command-line-options.html#fuzz">-fuzz <em class="option">distance</em></a></td>
620 <td valign="top">colors within this distance are considered equal</td>
624 <td valign="top"><a href="../www/command-line-options.html#fx">-fx <em class="option">expression</em></a></td>
625 <td valign="top">apply mathematical expression to an image channel(s)</td>
629 <td valign="top"><a href="../www/command-line-options.html#gamma">-gamma <em class="option">value</em></a></td>
630 <td valign="top">level of gamma correction</td>
634 <td valign="top"><a href="../www/command-line-options.html#gaussian">-gaussian <em class="option">geometry</em></a></td>
635 <td valign="top">reduce image noise and reduce detail levels</td>
639 <td valign="top"><a href="../www/command-line-options.html#geometry">-geometry <em class="option">geometry</em></a></td>
640 <td valign="top">preferred size or location of the image</td>
644 <td valign="top"><a href="../www/command-line-options.html#gravity">-gravity <em class="option">type</em></a></td>
645 <td valign="top">horizontal and vertical text placement</td>
649 <td valign="top"><a href="../www/command-line-options.html#green-primary">-green-primary <em class="option">point</em></a></td>
650 <td valign="top">chromaticity green primary point</td>
654 <td valign="top"><a href="../www/command-line-options.html#help">-help</a></td>
655 <td valign="top">print program options</td>
659 <td valign="top"><a href="../www/command-line-options.html#identify">-identify</a></td>
660 <td valign="top">identify the format and characteristics of the image</td>
664 <td valign="top"><a href="../www/command-line-options.html#ift">-ift</a></td>
665 <td valign="top">implements the inverse discrete Fourier transform (DFT)</td>
669 <td valign="top"><a href="../www/command-line-options.html#implode">-implode <em class="option">amount</em></a></td>
670 <td valign="top">implode image pixels about the center</td>
674 <td valign="top"><a href="../www/command-line-options.html#insert">-insert <em class="option">index</em></a></td>
675 <td valign="top">insert last image into the image sequence</td>
679 <td valign="top"><a href="../www/command-line-options.html#intent">-intent <em class="option">type</em></a></td>
680 <td valign="top">type of rendering intent when managing the image color</td>
684 <td valign="top"><a href="../www/command-line-options.html#interlace">-interlace <em class="option">type</em></a></td>
685 <td valign="top">type of image interlacing scheme</td>
689 <td valign="top"><a href="../www/command-line-options.html#interline-spacing">-interline-spacing <em class="option">value</em></a></td>
690 <td valign="top">the space between two text lines</td>
694 <td valign="top"><a href="../www/command-line-options.html#interpolate">-interpolate <em class="option">method</em></a></td>
695 <td valign="top">pixel color interpolation method</td>
699 <td valign="top"><a href="../www/command-line-options.html#interword-spacing">-interword-spacing <em class="option">value</em></a></td>
700 <td valign="top">the space between two words</td>
704 <td valign="top"><a href="../www/command-line-options.html#kerning">-kerning <em class="option">value</em></a></td>
705 <td valign="top">the space between two characters</td>
709 <td valign="top"><a href="../www/command-line-options.html#label">-label <em class="option">string</em></a></td>
710 <td valign="top">assign a label to an image</td>
714 <td valign="top"><a href="../www/command-line-options.html#lat">-lat <em class="option">geometry</em></a></td>
715 <td valign="top">local adaptive thresholding</td>
719 <td valign="top"><a href="../www/command-line-options.html#layers">-layers <em class="option">method</em></a></td>
720 <td valign="top">optimize or compare image layers</td>
724 <td valign="top"><a href="../www/command-line-options.html#level">-level <em class="option">value</em></a></td>
725 <td valign="top">adjust the level of image contrast</td>
729 <td valign="top"><a href="../www/command-line-options.html#limit">-limit <em class="option">type value</em></a></td>
730 <td valign="top">pixel cache resource limit</td>
734 <td valign="top"><a href="../www/command-line-options.html#linear-stretch">-linear-stretch <em class="option">geometry</em></a></td>
735 <td valign="top">linear with saturation histogram stretch</td>
739 <td valign="top"><a href="../www/command-line-options.html#liquid-rescale">-liquid-rescale <em class="option">geometry</em></a></td>
740 <td valign="top">rescale image with seam-carving</td>
744 <td valign="top"><a href="../www/command-line-options.html#log">-log <em class="option">format</em></a></td>
745 <td valign="top">format of debugging information</td>
749 <td valign="top"><a href="../www/command-line-options.html#loop">-loop <em class="option">iterations</em></a></td>
750 <td valign="top">add Netscape loop extension to your GIF animation</td>
754 <td valign="top"><a href="../www/command-line-options.html#mask">-mask <em class="option">filename</em></a></td>
755 <td valign="top">associate a mask with the image</td>
759 <td valign="top"><a href="../www/command-line-options.html#mattecolor">-mattecolor <em class="option">color</em></a></td>
760 <td valign="top">frame color</td>
764 <td valign="top"><a href="../www/command-line-options.html#median">-median <em class="option">radius</em></a></td>
765 <td valign="top">apply a median filter to the image</td>
769 <td valign="top"><a href="../www/command-line-options.html#modulate">-modulate <em class="option">value</em></a></td>
770 <td valign="top">vary the brightness, saturation, and hue</td>
774 <td valign="top"><a href="../www/command-line-options.html#monitor">-monitor</a></td>
775 <td valign="top">monitor progress</td>
779 <td valign="top"><a href="../www/command-line-options.html#monochrome">-monochrome</a></td>
780 <td valign="top">transform image to black and white</td>
784 <td valign="top"><a href="../www/command-line-options.html#morph">-morph <em class="option">value</em></a></td>
785 <td valign="top">morph an image sequence</td>
789 <td valign="top"><a href="../www/command-line-options.html#motion-blur">-motion-blur <em class="option">geometry</em></a></td>
790 <td valign="top">simulate motion blur</td>
794 <td valign="top"><a href="../www/command-line-options.html#negate">-negate</a></td>
795 <td valign="top">replace every pixel with its complementary color </td>
799 <td valign="top"><a href="../www/command-line-options.html#noise">-noise <em class="option">radius</em></a></td>
800 <td valign="top">add or reduce noise in an image</td>
804 <td valign="top"><a href="../www/command-line-options.html#normalize">-normalize</a></td>
805 <td valign="top">transform image to span the full range of colors</td>
809 <td valign="top"><a href="../www/command-line-options.html#opaque">-opaque <em class="option">color</em></a></td>
810 <td valign="top">change this color to the fill color</td>
814 <td valign="top"><a href="../www/command-line-options.html#ordered-dither">-ordered-dither <em class="option">NxN</em></a></td>
815 <td valign="top">ordered dither the image</td>
819 <td valign="top"><a href="../www/command-line-options.html#orient">-orient <em class="option">type</em></a></td>
820 <td valign="top">image orientation</td>
824 <td valign="top"><a href="../www/command-line-options.html#page">-page <em class="option">geometry</em></a></td>
825 <td valign="top">size and location of an image canvas (setting)</td>
829 <td valign="top"><a href="../www/command-line-options.html#paint">-paint <em class="option">radius</em></a></td>
830 <td valign="top">simulate an oil painting</td>
834 <td valign="top"><a href="../www/command-line-options.html#ping">-ping</a></td>
835 <td valign="top">efficiently determine image attributes</td>
839 <td valign="top"><a href="../www/command-line-options.html#pointsize">-pointsize <em class="option">value</em></a></td>
840 <td valign="top">font point size</td>
844 <td valign="top"><a href="../www/command-line-options.html#polaroid">-polaroid <em class="option">angle</em></a></td>
845 <td valign="top">simulate a Polaroid picture</td>
849 <td valign="top"><a href="../www/command-line-options.html#posterize">-posterize <em class="option">levels</em></a></td>
850 <td valign="top">reduce the image to a limited number of color levels</td>
854 <td valign="top"><a href="../www/command-line-options.html#preview">-preview <em class="option">type</em></a></td>
855 <td valign="top">image preview type</td>
859 <td valign="top"><a href="../www/command-line-options.html#print">-print <em class="option">string</em></a></td>
860 <td valign="top">interpret string and print to console</td>
864 <td valign="top"><a href="../www/command-line-options.html#process">-process <em class="option">image-filter</em></a></td>
865 <td valign="top">process the image with a custom image filter</td>
869 <td valign="top"><a href="../www/command-line-options.html#profile">-profile <em class="option">filename</em></a></td>
870 <td valign="top">add, delete, or apply an image profile</td>
874 <td valign="top"><a href="../www/command-line-options.html#quality">-quality <em class="option">value</em></a></td>
875 <td valign="top">JPEG/MIFF/PNG compression level</td>
879 <td valign="top"><a href="../www/command-line-options.html#quantize">-quantize <em class="option">colorspace</em></a></td>
880 <td valign="top">reduce image colors in this colorspace</td>
884 <td valign="top"><a href="../www/command-line-options.html#quiet">-quiet</a></td>
885 <td valign="top">suppress all warning messages</td>
889 <td valign="top"><a href="../www/command-line-options.html#radial-blur">-radial-blur <em class="option">angle</em></a></td>
890 <td valign="top">radial blur the image</td>
894 <td valign="top"><a href="../www/command-line-options.html#raise">-raise <em class="option">value</em></a></td>
895 <td valign="top">lighten/darken image edges to create a 3-D effect</td>
899 <td valign="top"><a href="../www/command-line-options.html#random-threshold">-random-threshold <em class="option">low,high</em></a></td>
900 <td valign="top">random threshold the image</td>
904 <td valign="top"><a href="../www/command-line-options.html#recolor">-recolor <em class="option">matrix</em></a></td>
905 <td valign="top">translate, scale, shear, or rotate image colors.</td>
909 <td valign="top"><a href="../www/command-line-options.html#red-primary">-red-primary <em class="option">point</em></a></td>
910 <td valign="top">chromaticity red primary point</td>
914 <td valign="top"><a href="../www/command-line-options.html#regard-warnings">-regard-warnings</a></td>
915 <td valign="top">pay attention to warning messages.</td>
919 <td valign="top"><a href="../www/command-line-options.html#region">-region <em class="option">geometry</em></a></td>
920 <td valign="top">apply options to a portion of the image</td>
924 <td valign="top"><a href="../www/command-line-options.html#remap">-remap <em class="option">filename</em></a></td>
925 <td valign="top">transform image colors to match this set of colors</td>
929 <td valign="top"><a href="../www/command-line-options.html#render">-render</a></td>
930 <td valign="top">render vector graphics</td>
934 <td valign="top"><a href="../www/command-line-options.html#repage">-repage <em class="option">geometry</em></a></td>
935 <td valign="top">size and location of an image canvas</td>
939 <td valign="top"><a href="../www/command-line-options.html#resample">-resample <em class="option">geometry</em></a></td>
940 <td valign="top">change the resolution of an image</td>
944 <td valign="top"><a href="../www/command-line-options.html#resize">-resize <em class="option">geometry</em></a></td>
945 <td valign="top">resize the image</td>
949 <td valign="top"><a href="../www/command-line-options.html#respect-parentheses">-respect-parentheses</a></td>
950 <td valign="top">settings remain in effect until parenthesis boundary.</td>
954 <td valign="top"><a href="../www/command-line-options.html#roll">-roll <em class="option">geometry</em></a></td>
955 <td valign="top">roll an image vertically or horizontally</td>
959 <td valign="top"><a href="../www/command-line-options.html#rotate">-rotate <em class="option">degrees</em></a></td>
960 <td valign="top">apply Paeth rotation to the image</td>
964 <td valign="top"><a href="../www/command-line-options.html#sample">-sample <em class="option">geometry</em></a></td>
965 <td valign="top">scale image with pixel sampling</td>
969 <td valign="top"><a href="../www/command-line-options.html#sampling-factor">-sampling-factor <em class="option">geometry</em></a></td>
970 <td valign="top">horizontal and vertical sampling factor</td>
974 <td valign="top"><a href="../www/command-line-options.html#scale">-scale <em class="option">geometry</em></a></td>
975 <td valign="top">scale the image</td>
979 <td valign="top"><a href="../www/command-line-options.html#scene">-scene <em class="option">value</em></a></td>
980 <td valign="top">image scene number</td>
984 <td valign="top"><a href="../www/command-line-options.html#seed">-seed <em class="option">value</em></a></td>
985 <td valign="top">seed a new sequence of pseudo-random numbers</td>
989 <td valign="top"><a href="../www/command-line-options.html#segment">-segment <em class="option">values</em></a></td>
990 <td valign="top">segment an image</td>
994 <td valign="top"><a href="../www/command-line-options.html#threshold">-selective-blur <em class="option">geometry</em></a></td>
995 <td valign="top">selectively blur pixels within a contrast threshold</td>
999 <td valign="top"><a href="../www/command-line-options.html#separate">-separate</a></td>
1000 <td valign="top">separate an image channel into a grayscale image</td>
1004 <td valign="top"><a href="../www/command-line-options.html#sepia-tone">-sepia-tone <em class="option">threshold</em></a></td>
1005 <td valign="top">simulate a sepia-toned photo</td>
1009 <td valign="top"><a href="../www/command-line-options.html#set">-set <em class="option">attribute value</em></a></td>
1010 <td valign="top">set an image attribute</td>
1014 <td valign="top"><a href="../www/command-line-options.html#shade">-shade <em class="option">degrees</em></a></td>
1015 <td valign="top">shade the image using a distant light source</td>
1019 <td valign="top"><a href="../www/command-line-options.html#shadow">-shadow <em class="option">geometry</em></a></td>
1020 <td valign="top">simulate an image shadow</td>
1024 <td valign="top"><a href="../www/command-line-options.html#sharpen">-sharpen <em class="option">geometry</em></a></td>
1025 <td valign="top">sharpen the image</td>
1029 <td valign="top"><a href="../www/command-line-options.html#shave">-shave <em class="option">geometry</em></a></td>
1030 <td valign="top">shave pixels from the image edges</td>
1034 <td valign="top"><a href="../www/command-line-options.html#shear">-shear <em class="option">geometry</em></a></td>
1035 <td valign="top">slide one edge of the image along the X or Y axis</td>
1039 <td valign="top"><a href="../www/command-line-options.html#sigmoidal">-sigmoidal-contrast <em class="option">geometry</em></a></td>
1040 <td valign="top">increase the contrast without saturating highlights or shadows</td>
1044 <td valign="top"><a href="../www/command-line-options.html#size">-size <em class="option">geometry</em></a></td>
1045 <td valign="top">width and height of image</td>
1049 <td valign="top"><a href="../www/command-line-options.html#sketch">-sketch <em class="option">geometry</em></a></td>
1050 <td valign="top">simulate a pencil sketch</td>
1054 <td valign="top"><a href="../www/command-line-options.html#solarize">-solarize <em class="option">threshold</em></a></td>
1055 <td valign="top">negate all pixels above the threshold level</td>
1059 <td valign="top"><a href="../www/command-line-options.html#splice">-splice <em class="option">geometry</em></a></td>
1060 <td valign="top">splice the background color into the image</td>
1064 <td valign="top"><a href="../www/command-line-options.html#spread">-spread <em class="option">radius</em></a></td>
1065 <td valign="top">displace image pixels by a random amount</td>
1069 <td valign="top"><a href="../www/command-line-options.html#strip">-strip</a></td>
1070 <td valign="top">strip image of all profiles and comments</td>
1074 <td valign="top"><a href="../www/command-line-options.html#stroke">-stroke <em class="option">color</em></a></td>
1075 <td valign="top">graphic primitive stroke color</td>
1079 <td valign="top"><a href="../www/command-line-options.html#strokewidth">-strokewidth <em class="option">value</em></a></td>
1080 <td valign="top">graphic primitive stroke width</td>
1084 <td valign="top"><a href="../www/command-line-options.html#stretch">-stretch <em class="option">type</em></a></td>
1085 <td valign="top">render text with this font stretch</td>
1089 <td valign="top"><a href="../www/command-line-options.html#style">-style <em class="option">type</em></a></td>
1090 <td valign="top">render text with this font style</td>
1094 <td valign="top"><a href="../www/command-line-options.html#swap">-swap <em class="option">indexes</em></a></td>
1095 <td valign="top">swap two images in the image sequence</td>
1099 <td valign="top"><a href="../www/command-line-options.html#swirl">-swirl <em class="option">degrees</em></a></td>
1100 <td valign="top">swirl image pixels about the center</td>
1104 <td valign="top"><a href="../www/command-line-options.html#texture">-texture <em class="option">filename</em></a></td>
1105 <td valign="top">name of texture to tile onto the image background</td>
1109 <td valign="top"><a href="../www/command-line-options.html#threshold">-threshold <em class="option">value</em></a></td>
1110 <td valign="top">threshold the image</td>
1114 <td valign="top"><a href="../www/command-line-options.html#thumbnail">-thumbnail <em class="option">geometry</em></a></td>
1115 <td valign="top">create a thumbnail of the image</td>
1119 <td valign="top"><a href="../www/command-line-options.html#tile">-tile <em class="option">filename</em></a></td>
1120 <td valign="top">tile image when filling a graphic primitive</td>
1124 <td valign="top"><a href="../www/command-line-options.html#tile-offset">-tile-offset <em class="option">geometry</em></a></td>
1125 <td valign="top">set the image tile offset</td>
1129 <td valign="top"><a href="../www/command-line-options.html#tint">-tint <em class="option">value</em></a></td>
1130 <td valign="top">tint the image with the fill color</td>
1134 <td valign="top"><a href="../www/command-line-options.html#transform">-transform</a></td>
1135 <td valign="top">affine transform image</td>
1139 <td valign="top"><a href="../www/command-line-options.html#transparent">-transparent <em class="option">color</em></a></td>
1140 <td valign="top">make this color transparent within the image</td>
1144 <td valign="top"><a href="../www/command-line-options.html#transparent-color">-transparent-color <em class="option">color</em></a></td>
1145 <td valign="top">transparent color</td>
1149 <td valign="top"><a href="../www/command-line-options.html#transpose">-transpose</a></td>
1150 <td valign="top">flip image in the vertical direction and rotate 90 degrees</td>
1154 <td valign="top"><a href="../www/command-line-options.html#transverse">-transverse</a></td>
1155 <td valign="top">flop image in the horizontal direction and rotate 270 degrees</td>
1159 <td valign="top"><a href="../www/command-line-options.html#treedepth">-treedepth <em class="option">value</em></a></td>
1160 <td valign="top">color tree depth</td>
1164 <td valign="top"><a href="../www/command-line-options.html#trim">-trim</a></td>
1165 <td valign="top">trim image edges</td>
1169 <td valign="top"><a href="../www/command-line-options.html#type">-type <em class="option">type</em></a></td>
1170 <td valign="top">image type</td>
1174 <td valign="top"><a href="../www/command-line-options.html#undercolor">-undercolor <em class="option">color</em></a></td>
1175 <td valign="top">annotation bounding box color</td>
1179 <td valign="top"><a href="../www/command-line-options.html#unique-colors">-unique-colors</a></td>
1180 <td valign="top">discard all but one of any pixel color.</td>
1184 <td valign="top"><a href="../www/command-line-options.html#units">-units <em class="option">type</em></a></td>
1185 <td valign="top">the units of image resolution</td>
1189 <td valign="top"><a href="../www/command-line-options.html#unsharp">-unsharp <em class="option">geometry</em></a></td>
1190 <td valign="top">sharpen the image</td>
1194 <td valign="top"><a href="../www/command-line-options.html#verbose">-verbose</a></td>
1195 <td valign="top">print detailed information about the image</td>
1199 <td valign="top"><a href="../www/command-line-options.html#version">-version</a></td>
1200 <td valign="top">print version information</td>
1204 <td valign="top"><a href="../www/command-line-options.html#view">-view</a></td>
1205 <td valign="top">FlashPix viewing transforms</td>
1209 <td valign="top"><a href="../www/command-line-options.html#vignette">-vignette <em class="option">geometry</em></a></td>
1210 <td valign="top">soften the edges of the image in vignette style</td>
1214 <td valign="top"><a href="../www/command-line-options.html#virtual-pixel">-virtual-pixel <em class="option">method</em></a></td>
1215 <td valign="top">access method for pixels outside the boundaries of the image</td>
1219 <td valign="top"><a href="../www/command-line-options.html#wave">-wave <em class="option">geometry</em></a></td>
1220 <td valign="top">alter an image along a sine wave</td>
1224 <td valign="top"><a href="../www/command-line-options.html#weight">-weight <em class="option">type</em></a></td>
1225 <td valign="top">render text with this font weight</td>
1229 <td valign="top"><a href="../www/command-line-options.html#white-point">-white-point <em class="option">point</em></a></td>
1230 <td valign="top">chromaticity white point</td>
1234 <td valign="top"><a href="../www/command-line-options.html#white-threshold">-white-threshold <em class="option">value</em></a></td>
1235 <td valign="top">force all pixels above the threshold into white</td>
1239 <td valign="top"><a href="../www/command-line-options.html#write">-write <em class="option">filename</em></a></td>
1240 <td valign="top">write images to this file</td>
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