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This tool is similar to <a href="../www/convert.html">magick convert</a> except that the original image file is <em>overwritten</em> (unless you change the file suffix with the <a href="command-line-options.html#format">-format</a> option) with any changes you request. See <a href="command-line-processing.html">Command Line Processing</a> for advice on how to structure your <code>mogrify</code> command or see below for sample usages of the command.</p> 98 99<h2><a class="anchor" id="usage"></a>Example Usage</h2> 100 101<p>We list a few examples of the <code>mogrify</code> command here to illustrate its usefulness and ease of use. To get started, let's reduce the size of our 102rose:</p> 103 104<pre class="highlight"><code>magick mogrify -resize 50% rose.jpg 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:12px; margin-bottom: 11px;" src="../images/rose.png" width="35" height="23" alt="rose" /> 114 </a> 115</ul> 116 117<p>You can resize all your JPEG images in a folder to a maximum dimension of 256x256 with this command:</p> 118 119<pre class="highlight"><code>magick mogrify -resize 256x256 *.jpg 120</code></pre> 121 122<p>Finally, we convert all our PNG images in a folder to the JPEG format:</p> 123 124<pre class="highlight"><code>magick mogrify -format jpg *.png 125</code></pre> 126 127<p>Here image files 1.png, 2.png, etc., are left untouched and files 1.jpg, 2.jpg, etc., are created. They are copies of their respective PNG images except are stored in the JPEG image format.</p> 128 129 130<p>You can find additional examples of using <code>mogrify</code> in <a href="http://www.ibm.com/developerworks/library/l-graf/?ca=dnt-428">Graphics from the Command Line</a>. Further discussion is available in <a href="http://www.ibm.com/developerworks/library/l-graf2/?ca=dgr-lnxw15GraphicsLine">More Graphics from the Command Line</a> and <a href="https://legacy.imagemagick.org/Usage/">Examples of ImageMagick Usage</a>.</p> 131 132<h2><a class="anchor" id="options"></a>Option Summary</h2> 133 134<p>The <code>mogrify</code> command recognizes these options. Click on an option to get more details about how that option works.</p> 135 136<table class="table table-sm table-hover"> 137 <tbody> 138 <tr> 139 <th align="left">Option</th> 140 <th align="left">Description</th> 141 </tr> 142 143 <tr> 144 <td><a href="command-line-options.html#adaptive-blur">-adaptive-blur <var>geometry</var></a></td> 145 <td>adaptively blur pixels; decrease effect near edges</td> 146 </tr> 147 148 <tr> 149 <td><a href="command-line-options.html#adaptive-resize">-adaptive-resize <var>geometry</var></a></td> 150 <td>adaptively resize image with data dependent triangulation.</td> 151 </tr> 152 153 <tr> 154 <td><a href="command-line-options.html#adaptive-sharpen">-adaptive-sharpen <var>geometry</var></a></td> 155 <td>adaptively sharpen pixels; increase effect near edges</td> 156 </tr> 157 158 <tr> 159 <td><a href="command-line-options.html#adjoin">-adjoin</a></td> 160 <td>join images into a single multi-image file</td> 161 </tr> 162 163 <tr> 164 <td><a href="command-line-options.html#affine">-affine <var>matrix</var></a></td> 165 <td>affine transform matrix</td> 166 </tr> 167 168 <tr> 169 <td><a href="command-line-options.html#alpha">-alpha</a></td> 170 <td>on, activate, off, deactivate, set, opaque, copy", 171transparent, extract, background, or shape the alpha channel</td> 172 </tr> 173 174 <tr> 175 <td><a href="command-line-options.html#annotate">-annotate <var>geometry text</var></a></td> 176 <td>annotate the image with text</td> 177 </tr> 178 179 <tr> 180 <td><a href="command-line-options.html#antialias">-antialias</a></td> 181 <td>remove pixel-aliasing</td> 182 </tr> 183 184 <tr> 185 <td><a href="command-line-options.html#append">-append</a></td> 186 <td>append an image sequence</td> 187 </tr> 188 189 <tr> 190 <td><a href="command-line-options.html#authenticate">-authenticate <var>value</var></a></td> 191 <td>decipher image with this password</td> 192 </tr> 193 194 <tr> 195 <td><a href="command-line-options.html#auto-gamma">-auto-gamma</a></td> 196 <td>automagically adjust gamma level of image</td> 197 </tr> 198 199 <tr> 200 <td><a href="command-line-options.html#auto-level">-auto-level</a></td> 201 <td>automagically adjust color levels of image</td> 202 </tr> 203 204 <tr> 205 <td><a href="command-line-options.html#auto-orient">-auto-orient</a></td> 206 <td>automagically orient image</td> 207 </tr> 208 209 <tr> 210 <td><a href="command-line-options.html#auto-threshold">-auto-threshold <var>method</var></a></td> 211 <td>automatically perform image thresholding</td> 212 </tr> 213 214 <tr> 215 <td><a href="command-line-options.html#background">-background <var>color</var></a></td> 216 <td>background color</td> 217 </tr> 218 219 <tr> 220 <td><a href="command-line-options.html#bench">-bench <var>iterations</var></a></td> 221 <td>measure performance</td> 222 </tr> 223 224 <tr> 225 <td><a href="command-line-options.html#bias">-bias <var>value</var></a></td> 226 <td>add bias when convolving an image</td> 227 </tr> 228 229 <tr> 230 <td><a href="command-line-options.html#bilateral-blur">-bilateral-blur <var>geometry</var></a></td> 231 <td>non-linear, edge-preserving, and noise-reducing smoothing filter</td> 232 </tr> 233 234 <tr> 235 <td><a href="command-line-options.html#black-threshold">-black-threshold <var>value</var></a></td> 236 <td>force all pixels below the threshold into black</td> 237 </tr> 238 239 <tr> 240 <td><a href="command-line-options.html#blue-primary">-blue-primary <var>point</var></a></td> 241 <td>chromaticity blue primary point</td> 242 </tr> 243 244 <tr> 245 <td><a href="command-line-options.html#blue-shift">-blue-shift <var>factor</var></a></td> 246 <td>simulate a scene at nighttime in the moonlight</td> 247 </tr> 248 249 <tr> 250 <td><a href="command-line-options.html#blur">-blur <var>geometry</var></a></td> 251 <td>reduce image noise and reduce detail levels</td> 252 </tr> 253 254 <tr> 255 <td><a href="command-line-options.html#border">-border <var>geometry</var></a></td> 256 <td>surround image with a border of color</td> 257 </tr> 258 259 <tr> 260 <td><a href="command-line-options.html#bordercolor">-bordercolor <var>color</var></a></td> 261 <td>border color</td> 262 </tr> 263 264 <tr> 265 <td><a href="command-line-options.html#brightness-contrast">-brightness-contrast <var>geometry</var></a></td> 266 <td>improve brightness / contrast of the image</td> 267 </tr> 268 269 <tr> 270 <td><a href="command-line-options.html#canny">-canny <var>geometry</var></a></td> 271 <td>use a multi-stage algorithm to detect a wide range of edges in the image</td> 272 </tr> 273 274 <tr> 275 <td><a href="command-line-options.html#caption">-caption <var>string</var></a></td> 276 <td>assign a caption to an image</td> 277 </tr> 278 279 <tr> 280 <td><a href="command-line-options.html#cdl">-cdl <var>filename</var></a></td> 281 <td>color correct with a color decision list</td> 282 </tr> 283 284 <tr> 285 <td><a href="command-line-options.html#channel">-channel <var>type</var></a></td> 286 <td>apply option to select image channels</td> 287 </tr> 288 289 <tr> 290 <td><a href="command-line-options.html#charcoal">-charcoal <var>radius</var></a></td> 291 <td>simulate a charcoal drawing</td> 292 </tr> 293 294 <tr> 295 <td><a href="command-line-options.html#chop">-chop <var>geometry</var></a></td> 296 <td>remove pixels from the image interior</td> 297 </tr> 298 299 <tr> 300 <td><a href="command-line-options.html#clip">-clip</a></td> 301 <td>clip along the first path from the 8BIM profile</td> 302 </tr> 303 304 <tr> 305 <td><a href="command-line-options.html#clahe">-clahe <var>geometry</var></a></td> 306 <td>contrast limited adaptive histogram equalization</td> 307 </tr> 308 309 <tr> 310 <td><a href="command-line-options.html#clamp">-clamp</a></td> 311 <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> 312 </tr> 313 314 <tr> 315 <td><a href="command-line-options.html#clip-mask">-clip-mask</a> <var>filename</var></td> 316 <td>associate clip mask with the image</td> 317 </tr> 318 319 <tr> 320 <td><a href="command-line-options.html#clip-path">-clip-path <var>id</var></a></td> 321 <td>clip along a named path from the 8BIM profile</td> 322 </tr> 323 324 <tr> 325 <td><a href="command-line-options.html#clut">-clut</a></td> 326 <td>apply a color lookup table to the image</td> 327 </tr> 328 329 <tr> 330 <td><a href="command-line-options.html#color-threshold">-color-threshold <var>start-color</var>-<var>stop-color</var></a></td> 331 <td>force all pixels in the color range to white otherwise black</td> 332 </tr> 333 334 <tr> 335 <td><a href="command-line-options.html#complex">-complex<var>operator</var></a></td> 336 <td>perform complex mathematics on an image sequence</td> 337 </tr> 338 339 <tr> 340 <td><a href="command-line-options.html#connected-components">-connected-components <var>connectivity</var></a></td> 341 <td>connected-components uniquely labeled, choose from 4 or 8 way connectivity</td> 342 </tr> 343 344 <tr> 345 <td><a href="command-line-options.html#contrast-stretch">-contrast-stretch <var>geometry</var></a></td> 346 <td>improve the contrast in an image by `stretching' the range of intensity value</td> 347 </tr> 348 349 <tr> 350 <td><a href="command-line-options.html#coalesce">-coalesce</a></td> 351 <td>merge a sequence of images</td> 352 </tr> 353 354 <tr> 355 <td><a href="command-line-options.html#colorize">-colorize <var>value</var></a></td> 356 <td>colorize the image with the fill color</td> 357 </tr> 358 359 <tr> 360 <td><a href="command-line-options.html#color-matrix">-color-matrix <var>matrix</var></a></td> 361 <td>apply color correction to the image.</td> 362 </tr> 363 364 <tr> 365 <td><a href="command-line-options.html#colors">-colors <var>value</var></a></td> 366 <td>preferred number of colors in the image</td> 367 </tr> 368 369 <tr> 370 <td><a href="command-line-options.html#colorspace">-colorspace <var>type</var></a></td> 371 <td>set image colorspace</td> 372 </tr> 373 374 <tr> 375 <td><a href="command-line-options.html#combine">-combine</a></td> 376 <td>combine a sequence of images</td> 377 </tr> 378 379 <tr> 380 <td><a href="command-line-options.html#comment">-comment <var>string</var></a></td> 381 <td>annotate image with comment</td> 382 </tr> 383 384 <tr> 385 <td><a href="command-line-options.html#compose">-compose <var>operator</var></a></td> 386 <td>set image composite operator</td> 387 </tr> 388 389 <tr> 390 <td><a href="command-line-options.html#composite">-composite</a></td> 391 <td>composite image</td> 392 </tr> 393 394 <tr> 395 <td><a href="command-line-options.html#compress">-compress <var>type</var></a></td> 396 <td>image compression type</td> 397 </tr> 398 399 <tr> 400 <td><a href="command-line-options.html#contrast">-contrast</a></td> 401 <td>enhance or reduce the image contrast</td> 402 </tr> 403 404 <tr> 405 <td><a href="command-line-options.html#convolve">-convolve <var>coefficients</var></a></td> 406 <td>apply a convolution kernel to the image</td> 407 </tr> 408 409 <tr> 410 <td><a href="command-line-options.html#copy">-copy <var>geometry</var> <var>offset</var></a></td> 411 <td>copy pixels from one area of an image to another</td> 412 </tr> 413 414 <tr> 415 <td><a href="command-line-options.html#crop">-crop <var>geometry</var></a></td> 416 <td>crop the image</td> 417 </tr> 418 419 <tr> 420 <td><a href="command-line-options.html#cycle">-cycle <var>amount</var></a></td> 421 <td>cycle the image colormap</td> 422 </tr> 423 424 <tr> 425 <td><a href="command-line-options.html#decipher">-decipher <var>filename</var></a></td> 426 <td>convert cipher pixels to plain</td> 427 </tr> 428 429 <tr> 430 <td><a href="command-line-options.html#debug">-debug <var>events</var></a></td> 431 <td>display copious debugging information</td> 432 </tr> 433 434 <tr> 435 <td><a href="command-line-options.html#define">-define <var>format:option</var></a></td> 436 <td>define one or more image format options</td> 437 </tr> 438 439 <tr> 440 <td><a href="command-line-options.html#deconstruct">-deconstruct</a></td> 441 <td>break down an image sequence into constituent parts</td> 442 </tr> 443 444 <tr> 445 <td><a href="command-line-options.html#delay">-delay <var>centiseconds</var></a></td> 446 <td>display the next image after pausing</td> 447 </tr> 448 449 <tr> 450 <td><a href="command-line-options.html#delete">-delete <var>index</var></a></td> 451 <td>delete the image from the image sequence</td> 452 </tr> 453 454 <tr> 455 <td><a href="command-line-options.html#density">-density <var>geometry</var></a></td> 456 <td>horizontal and vertical density of the image</td> 457 </tr> 458 459 <tr> 460 <td><a href="command-line-options.html#depth">-depth <var>value</var></a></td> 461 <td>image depth</td> 462 </tr> 463 464 <tr> 465 <td><a href="command-line-options.html#despeckle">-despeckle</a></td> 466 <td>reduce the speckles within an image</td> 467 </tr> 468 469 <tr> 470 <td><a href="command-line-options.html#direction">-direction <var>type</var></a></td> 471 <td>render text right-to-left or left-to-right</td> 472 </tr> 473 474 <tr> 475 <td><a href="command-line-options.html#display">-display <var>server</var></a></td> 476 <td>get image or font from this X server</td> 477 </tr> 478 479 <tr> 480 <td><a href="command-line-options.html#dispose">-dispose <var>method</var></a></td> 481 <td>layer disposal method</td> 482 </tr> 483 484 <tr> 485 <td><a href="command-line-options.html#distort">-distort <var>type coefficients</var></a></td> 486 <td>distort image</td> 487 </tr> 488 489 <tr> 490 <td><a href="command-line-options.html#distribute-cache">-distribute-cache <var>port</var></a></td> 491 <td>launch a pixel cache server</td> 492 </tr> 493 494 <tr> 495 <td><a href="command-line-options.html#dither">-dither <var>method</var></a></td> 496 <td>apply error diffusion to image</td> 497 </tr> 498 499 <tr> 500 <td><a href="command-line-options.html#draw">-draw <var>string</var></a></td> 501 <td>annotate the image with a graphic primitive</td> 502 </tr> 503 504 <tr> 505 <td><a href="command-line-options.html#duplicate">-duplicate <var>count,indexes</var></a></td> 506 <td>duplicate an image one or more times</td> 507 </tr> 508 509 <tr> 510 <td><a href="command-line-options.html#edge">-edge <var>radius</var></a></td> 511 <td>apply a filter to detect edges in the image</td> 512 </tr> 513 514 <tr> 515 <td><a href="command-line-options.html#emboss">-emboss <var>radius</var></a></td> 516 <td>emboss an image</td> 517 </tr> 518 519 <tr> 520 <td><a href="command-line-options.html#encipher">-encipher <var>filename</var></a></td> 521 <td>convert plain pixels to cipher pixels</td> 522 </tr> 523 524 <tr> 525 <td><a href="command-line-options.html#encoding">-encoding <var>type</var></a></td> 526 <td>text encoding type</td> 527 </tr> 528 529 <tr> 530 <td><a href="command-line-options.html#endian">-endian <var>type</var></a></td> 531 <td>endianness (MSB or LSB) of the image</td> 532 </tr> 533 534 <tr> 535 <td><a href="command-line-options.html#enhance">-enhance</a></td> 536 <td>apply a digital filter to enhance a noisy image</td> 537 </tr> 538 539 <tr> 540 <td><a href="command-line-options.html#equalize">-equalize</a></td> 541 <td>perform histogram equalization to an image</td> 542 </tr> 543 544 <tr> 545 <td><a href="command-line-options.html#evaluate">-evaluate <var>operator value</var></a></td> 546 <td>evaluate an arithmetic, relational, or logical expression</td> 547 </tr> 548 549 <tr> 550 <td><a href="command-line-options.html#evaluate-sequence">-evaluate-sequence <var>operator</var></a></td> 551 <td>evaluate an arithmetic, relational, or logical expression for an image sequence</td> 552 </tr> 553 554 <tr> 555 <td><a href="command-line-options.html#extent">-extent <var>geometry</var></a></td> 556 <td>set the image size</td> 557 </tr> 558 559 <tr> 560 <td><a href="command-line-options.html#extract">-extract <var>geometry</var></a></td> 561 <td>extract area from image</td> 562 </tr> 563 564 <tr> 565 <td><a href="command-line-options.html#family">-family <var>name</var></a></td> 566 <td>render text with this font family</td> 567 </tr> 568 569 <tr> 570 <td><a href="command-line-options.html#features">-features <var>distance</var></a></td> 571 <td>analyze image features (e.g. contract, correlations, etc.).</td> 572 </tr> 573 574 <tr> 575 <td><a href="command-line-options.html#fft">-fft</a></td> 576 <td>implements the discrete Fourier transform (DFT)</td> 577 </tr> 578 579 <tr> 580 <td><a href="command-line-options.html#fill">-fill <var>color</var></a></td> 581 <td>color to use when filling a graphic primitive</td> 582 </tr> 583 584 <tr> 585 <td><a href="command-line-options.html#filter">-filter <var>type</var></a></td> 586 <td>use this filter when resizing an image</td> 587 </tr> 588 589 <tr> 590 <td><a href="command-line-options.html#flatten">-flatten</a></td> 591 <td>flatten a sequence of images</td> 592 </tr> 593 594 <tr> 595 <td><a href="command-line-options.html#flip">-flip</a></td> 596 <td>flip image in the vertical direction</td> 597 </tr> 598 599 <tr> 600 <td><a href="command-line-options.html#floodfill">-floodfill <var>geometry color</var></a></td> 601 <td>floodfill the image with color</td> 602 </tr> 603 604 <tr> 605 <td><a href="command-line-options.html#flop">-flop</a></td> 606 <td>flop image in the horizontal direction</td> 607 </tr> 608 609 <tr> 610 <td><a href="command-line-options.html#font">-font <var>name</var></a></td> 611 <td>render text with this font</td> 612 </tr> 613 614 <tr> 615 <td><a href="command-line-options.html#format">-format <var>type</var></a></td> 616 <td>output formatted image characteristics</td> 617 </tr> 618 619 <tr> 620 <td><a href="command-line-options.html#frame">-frame <var>geometry</var></a></td> 621 <td>surround image with an ornamental border</td> 622 </tr> 623 624 <tr> 625 <td><a href="command-line-options.html#function">-function <var>name</var></a></td> 626 <td>apply a function to the image</td> 627 </tr> 628 629 <tr> 630 <td><a href="command-line-options.html#fuzz">-fuzz <var>distance</var></a></td> 631 <td>colors within this distance are considered equal</td> 632 </tr> 633 634 <tr> 635 <td><a href="command-line-options.html#fx">-fx <var>expression</var></a></td> 636 <td>apply mathematical expression to an image channel(s)</td> 637 </tr> 638 639 <tr> 640 <td><a href="command-line-options.html#gamma">-gamma <var>value</var></a></td> 641 <td>level of gamma correction</td> 642 </tr> 643 644 <tr> 645 <td><a href="command-line-options.html#gaussian-blur">-gaussian-blur <var>geometry</var></a></td> 646 <td>reduce image noise and reduce detail levels</td> 647 </tr> 648 649 <tr> 650 <td><a href="command-line-options.html#geometry">-geometry <var>geometry</var></a></td> 651 <td>preferred size or location of the image</td> 652 </tr> 653 654 <tr> 655 <td><a href="command-line-options.html#gravity">-gravity <var>type</var></a></td> 656 <td>horizontal and vertical text placement</td> 657 </tr> 658 659 <tr> 660 <td><a href="command-line-options.html#grayscale">-grayscale <var>method</var></a></td> 661 <td>convert image to grayscale</td> 662 </tr> 663 664 <tr> 665 <td><a href="command-line-options.html#green-primary">-green-primary <var>point</var></a></td> 666 <td>chromaticity green primary point</td> 667 </tr> 668 669 <tr> 670 <td><a href="command-line-options.html#help">-help</a></td> 671 <td>print program options</td> 672 </tr> 673 674 <tr> 675 <td><a href="command-line-options.html#hough-lines">-hough-lines <var>geometry</var></a></td> 676 <td>identify lines in the image</td> 677 </tr> 678 679 <tr> 680 <td><a href="command-line-options.html#identify">-identify</a></td> 681 <td>identify the format and characteristics of the image</td> 682 </tr> 683 684 <tr> 685 <td><a href="command-line-options.html#ift">-ifft</a></td> 686 <td>implements the inverse discrete Fourier transform (DFT)</td> 687 </tr> 688 689 <tr> 690 <td><a href="command-line-options.html#implode">-implode <var>amount</var></a></td> 691 <td>implode image pixels about the center</td> 692 </tr> 693 694 <tr> 695 <td><a href="command-line-options.html#insert">-insert <var>index</var></a></td> 696 <td>insert last image into the image sequence</td> 697 </tr> 698 699 <tr> 700 <td><a href="command-line-options.html#intensity">-intensity <var>method</var></a></td> 701 <td>method to generate an intensity value from a pixel</td> 702 </tr> 703 704 <tr> 705 <td><a href="command-line-options.html#intent">-intent <var>type</var></a></td> 706 <td>type of rendering intent when managing the image color</td> 707 </tr> 708 709 <tr> 710 <td><a href="command-line-options.html#interlace">-interlace <var>type</var></a></td> 711 <td>type of image interlacing scheme</td> 712 </tr> 713 714 <tr> 715 <td><a href="command-line-options.html#interline-spacing">-interline-spacing <var>value</var></a></td> 716 <td>the space between two text lines</td> 717 </tr> 718 719 <tr> 720 <td><a href="command-line-options.html#interpolate">-interpolate <var>method</var></a></td> 721 <td>pixel color interpolation method</td> 722 </tr> 723 724 <tr> 725 <td><a href="command-line-options.html#interword-spacing">-interword-spacing <var>value</var></a></td> 726 <td>the space between two words</td> 727 </tr> 728 729 <tr> 730 <td><a href="command-line-options.html#kerning">-kerning <var>value</var></a></td> 731 <td>the space between two characters</td> 732 </tr> 733 734 <tr> 735 <td><a href="command-line-options.html#colors">-kmeans <var>geometry</var></a></td> 736 <td>K means color reduction</td> 737 </tr> 738 739 <tr> 740 <td><a href="command-line-options.html#kuwahara">-kuwahara <var>geometry</var></a></td> 741 <td>edge preserving noise reduction filter</td> 742 </tr> 743 744 <tr> 745 <td><a href="command-line-options.html#label">-label <var>string</var></a></td> 746 <td>assign a label to an image</td> 747 </tr> 748 749 <tr> 750 <td><a href="command-line-options.html#lat">-lat <var>geometry</var></a></td> 751 <td>local adaptive thresholding</td> 752 </tr> 753 754 <tr> 755 <td><a href="command-line-options.html#layers">-layers <var>method</var></a></td> 756 <td>optimize or compare image layers</td> 757 </tr> 758 759 <tr> 760 <td><a href="command-line-options.html#level">-level <var>value</var></a></td> 761 <td>adjust the level of image contrast</td> 762 </tr> 763 764 <tr> 765 <td><a href="command-line-options.html#limit">-limit <var>type value</var></a></td> 766 <td>pixel cache resource limit</td> 767 </tr> 768 769 <tr> 770 <td><a href="command-line-options.html#linear-stretch">-linear-stretch <var>geometry</var></a></td> 771 <td>linear with saturation histogram stretch</td> 772 </tr> 773 774 <tr> 775 <td><a href="command-line-options.html#liquid-rescale">-liquid-rescale <var>geometry</var></a></td> 776 <td>rescale image with seam-carving</td> 777 </tr> 778 779 <tr> 780 <td><a href="command-line-options.html#log">-log <var>format</var></a></td> 781 <td>format of debugging information</td> 782 </tr> 783 784 <tr> 785 <td><a href="command-line-options.html#loop">-loop <var>iterations</var></a></td> 786 <td>add Netscape loop extension to your GIF animation</td> 787 </tr> 788 789 <tr> 790 <td><a href="command-line-options.html#mattecolor">-mattecolor <var>color</var></a></td> 791 <td>frame color</td> 792 </tr> 793 794 <tr> 795 <td><a href="command-line-options.html#median">-median <var>radius</var></a></td> 796 <td>apply a median filter to the image</td> 797 </tr> 798 799 <tr> 800 <td><a href="command-line-options.html#mean-shift">-mean-shift <var>geometry</var></a></td> 801 <td>delineate arbitrarily shaped clusters in the image</td> 802 </tr> 803 804 <tr> 805 <td><a href="command-line-options.html#metric">-metric <var>type</var></a></td> 806 <td>measure differences between images with this metric</td> 807 </tr> 808 809 <tr> 810 <td><a href="command-line-options.html#mode">-mode <var>radius</var></a></td> 811 <td>make each pixel the 'predominant color' of the neighborhood</td> 812 </tr> 813 814 <tr> 815 <td><a href="command-line-options.html#modulate">-modulate <var>value</var></a></td> 816 <td>vary the brightness, saturation, and hue</td> 817 </tr> 818 819 <tr> 820 <td><a href="command-line-options.html#monitor">-monitor</a></td> 821 <td>monitor progress</td> 822 </tr> 823 824 <tr> 825 <td><a href="command-line-options.html#monochrome">-monochrome</a></td> 826 <td>transform image to black and white</td> 827 </tr> 828 829 <tr> 830 <td><a href="command-line-options.html#morph">-morph <var>value</var></a></td> 831 <td>morph an image sequence</td> 832 </tr> 833 834 <tr> 835 <td><a href="command-line-options.html#morphology">-morphology <var>method</var></a> <var>kernel</var></td> 836 <td>apply a morphology method to the image</td> 837 </tr> 838 839 <tr> 840 <td><a href="command-line-options.html#motion-blur">-motion-blur <var>geometry</var></a></td> 841 <td>simulate motion blur</td> 842 </tr> 843 844 <tr> 845 <td><a href="command-line-options.html#negate">-negate</a></td> 846 <td>replace each pixel with its complementary color </td> 847 </tr> 848 849 <tr> 850 <td><a href="command-line-options.html#noise">-noise <var>radius</var></a></td> 851 <td>add or reduce noise in an image</td> 852 </tr> 853 854 <tr> 855 <td><a href="command-line-options.html#normalize">-normalize</a></td> 856 <td>transform image to span the full range of colors</td> 857 </tr> 858 859 <tr> 860 <td><a href="command-line-options.html#opaque">-opaque <var>color</var></a></td> 861 <td>change this color to the fill color</td> 862 </tr> 863 864 <tr> 865 <td><a href="command-line-options.html#ordered-dither">-ordered-dither <var>NxN</var></a></td> 866 <td>ordered dither the image</td> 867 </tr> 868 869 <tr> 870 <td><a href="command-line-options.html#orient">-orient <var>type</var></a></td> 871 <td>image orientation</td> 872 </tr> 873 874 <tr> 875 <td><a href="command-line-options.html#page">-page <var>geometry</var></a></td> 876 <td>size and location of an image canvas (setting)</td> 877 </tr> 878 879 <tr> 880 <td><a href="command-line-options.html#page">-path <var>path</var></a></td> 881 <td>write images to this path on disk</td> 882 </tr> 883 884 <tr> 885 <td><a href="command-line-options.html#paint">-paint <var>radius</var></a></td> 886 <td>simulate an oil painting</td> 887 </tr> 888 889 <tr> 890 <td><a href="command-line-options.html#perceptible">-perceptible</a></td> 891 <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> 892 </tr> 893 894 <tr> 895 <td><a href="command-line-options.html#ping">-ping</a></td> 896 <td>efficiently determine image attributes</td> 897 </tr> 898 899 <tr> 900 <td><a href="command-line-options.html#pointsize">-pointsize <var>value</var></a></td> 901 <td>font point size</td> 902 </tr> 903 904 <tr> 905 <td><a href="command-line-options.html#polaroid">-polaroid <var>angle</var></a></td> 906 <td>simulate a Polaroid picture</td> 907 </tr> 908 909 <tr> 910 <td><a href="command-line-options.html#poly">-poly <var>terms</var></a></td> 911 <td>build a polynomial from the image sequence and the corresponding terms (coefficients and degree pairs).</td> 912 </tr> 913 914 <tr> 915 <td><a href="command-line-options.html#posterize">-posterize <var>levels</var></a></td> 916 <td>reduce the image to a limited number of color levels</td> 917 </tr> 918 919 <tr> 920 <td><a href="command-line-options.html#precision">-precision <var>value</var></a></td> 921 <td>set the maximum number of significant digits to be printed</td> 922 </tr> 923 924 <tr> 925 <td><a href="command-line-options.html#preview">-preview <var>type</var></a></td> 926 <td>image preview type</td> 927 </tr> 928 929 <tr> 930 <td><a href="command-line-options.html#print">-print <var>string</var></a></td> 931 <td>interpret string and print to console</td> 932 </tr> 933 934 <tr> 935 <td><a href="command-line-options.html#process">-process <var>image-filter</var></a></td> 936 <td>process the image with a custom image filter</td> 937 </tr> 938 939 <tr> 940 <td><a href="command-line-options.html#profile">-profile <var>filename</var></a></td> 941 <td>add, delete, or apply an image profile</td> 942 </tr> 943 944 <tr> 945 <td><a href="command-line-options.html#quality">-quality <var>value</var></a></td> 946 <td>JPEG/MIFF/PNG compression level</td> 947 </tr> 948 949 <tr> 950 <td><a href="command-line-options.html#quantize">-quantize <var>colorspace</var></a></td> 951 <td>reduce image colors in this colorspace</td> 952 </tr> 953 954 <tr> 955 <td><a href="command-line-options.html#quiet">-quiet</a></td> 956 <td>suppress all warning messages</td> 957 </tr> 958 959 <tr> 960 <td><a href="command-line-options.html#radial-blur">-radial-blur <var>angle</var></a></td> 961 <td>radial blur the image</td> 962 </tr> 963 964 <tr> 965 <td><a href="command-line-options.html#raise">-raise <var>value</var></a></td> 966 <td>lighten/darken image edges to create a 3-D effect</td> 967 </tr> 968 969 <tr> 970 <td><a href="command-line-options.html#random-threshold">-random-threshold <var>low, high</var></a></td> 971 <td>random threshold the image</td> 972 </tr> 973 974 <tr> 975 <td><a href="command-line-options.html#range-threshold">-range-threshold <var>low-black, low-white, high-white, high-black</var></a></td> 976 <td>perform either hard or soft thresholding within some range of values in an image</td> 977 </tr> 978 979 <tr> 980 <td><a href="command-line-options.html#read-mask">-read-mask <var>filename</var></a></td> 981 <td>associate a read mask with the image</td> 982 </tr> 983 984 <tr> 985 <td><a href="command-line-options.html#red-primary">-red-primary <var>point</var></a></td> 986 <td>chromaticity red primary point</td> 987 </tr> 988 989 <tr> 990 <td><a href="command-line-options.html#regard-warnings">-regard-warnings</a></td> 991 <td>pay attention to warning messages.</td> 992 </tr> 993 994 <tr> 995 <td><a href="command-line-options.html#region">-region <var>geometry</var></a></td> 996 <td>apply options to a portion of the image</td> 997 </tr> 998 999 <tr> 1000 <td><a href="command-line-options.html#remap">-remap <var>filename</var></a></td> 1001 <td>transform image colors to match this set of colors</td> 1002 </tr> 1003 1004 <tr> 1005 <td><a href="command-line-options.html#render">-render</a></td> 1006 <td>render vector graphics</td> 1007 </tr> 1008 1009 <tr> 1010 <td><a href="command-line-options.html#repage">-repage <var>geometry</var></a></td> 1011 <td>size and location of an image canvas</td> 1012 </tr> 1013 1014 <tr> 1015 <td><a href="command-line-options.html#resample">-resample <var>geometry</var></a></td> 1016 <td>change the resolution of an image</td> 1017 </tr> 1018 1019 <tr> 1020 <td><a href="command-line-options.html#resize">-resize <var>geometry</var></a></td> 1021 <td>resize the image</td> 1022 </tr> 1023 1024 <tr> 1025 <td><a href="command-line-options.html#respect-parentheses">-respect-parentheses</a></td> 1026 <td>settings remain in effect until parenthesis boundary.</td> 1027 </tr> 1028 1029 <tr> 1030 <td><a href="command-line-options.html#roll">-roll <var>geometry</var></a></td> 1031 <td>roll an image vertically or horizontally</td> 1032 </tr> 1033 1034 <tr> 1035 <td><a href="command-line-options.html#rotate">-rotate <var>degrees</var></a></td> 1036 <td>apply Paeth rotation to the image</td> 1037 </tr> 1038 1039 <tr> 1040 <td><a href="command-line-options.html#sample">-sample <var>geometry</var></a></td> 1041 <td>scale image with pixel sampling</td> 1042 </tr> 1043 1044 <tr> 1045 <td><a href="command-line-options.html#sampling-factor">-sampling-factor <var>geometry</var></a></td> 1046 <td>horizontal and vertical sampling factor</td> 1047 </tr> 1048 1049 <tr> 1050 <td><a href="command-line-options.html#scale">-scale <var>geometry</var></a></td> 1051 <td>scale the image</td> 1052 </tr> 1053 1054 <tr> 1055 <td><a href="command-line-options.html#scene">-scene <var>value</var></a></td> 1056 <td>image scene number</td> 1057 </tr> 1058 1059 <tr> 1060 <td><a href="command-line-options.html#seed">-seed <var>value</var></a></td> 1061 <td>seed a new sequence of pseudo-random numbers</td> 1062 </tr> 1063 1064 <tr> 1065 <td><a href="command-line-options.html#segment">-segment <var>values</var></a></td> 1066 <td>segment an image</td> 1067 </tr> 1068 1069 <tr> 1070 <td><a href="command-line-options.html#threshold">-selective-blur <var>geometry</var></a></td> 1071 <td>selectively blur pixels within a contrast threshold</td> 1072 </tr> 1073 1074 <tr> 1075 <td><a href="command-line-options.html#separate">-separate</a></td> 1076 <td>separate an image channel into a grayscale image</td> 1077 </tr> 1078 1079 <tr> 1080 <td><a href="command-line-options.html#sepia-tone">-sepia-tone <var>threshold</var></a></td> 1081 <td>simulate a sepia-toned photo</td> 1082 </tr> 1083 1084 <tr> 1085 <td><a href="command-line-options.html#set">-set <var>attribute value</var></a></td> 1086 <td>set an image attribute</td> 1087 </tr> 1088 1089 <tr> 1090 <td><a href="command-line-options.html#shade">-shade <var>degrees</var></a></td> 1091 <td>shade the image using a distant light source</td> 1092 </tr> 1093 1094 <tr> 1095 <td><a href="command-line-options.html#shadow">-shadow <var>geometry</var></a></td> 1096 <td>simulate an image shadow</td> 1097 </tr> 1098 1099 <tr> 1100 <td><a href="command-line-options.html#sharpen">-sharpen <var>geometry</var></a></td> 1101 <td>sharpen the image</td> 1102 </tr> 1103 1104 <tr> 1105 <td><a href="command-line-options.html#shave">-shave <var>geometry</var></a></td> 1106 <td>shave pixels from the image edges</td> 1107 </tr> 1108 1109 <tr> 1110 <td><a href="command-line-options.html#shear">-shear <var>geometry</var></a></td> 1111 <td>slide one edge of the image along the X or Y axis</td> 1112 </tr> 1113 1114 <tr> 1115 <td><a href="command-line-options.html#sigmoidal">-sigmoidal-contrast <var>geometry</var></a></td> 1116 <td>increase the contrast without saturating highlights or shadows</td> 1117 </tr> 1118 1119 <tr> 1120 <td><a href="command-line-options.html#size">-size <var>geometry</var></a></td> 1121 <td>width and height of image</td> 1122 </tr> 1123 1124 <tr> 1125 <td><a href="command-line-options.html#sketch">-sketch <var>geometry</var></a></td> 1126 <td>simulate a pencil sketch</td> 1127 </tr> 1128 1129 <tr> 1130 <td><a href="command-line-options.html#smush">-smush <var>offset</var></a></td> 1131 <td>smush an image sequence together</td> 1132 </tr> 1133 1134 <tr> 1135 <td><a href="command-line-options.html#solarize">-solarize <var>threshold</var></a></td> 1136 <td>negate all pixels above the threshold level</td> 1137 </tr> 1138 1139 <tr> 1140 <td><a href="command-line-options.html#sort-pixels">-sort-pixels</a></td> 1141 <td>sorts pixels within each scanline in ascending order of intensity</td> 1142 </tr> 1143 1144 <tr> 1145 <td><a href="command-line-options.html#splice">-splice <var>geometry</var></a></td> 1146 <td>splice the background color into the image</td> 1147 </tr> 1148 1149 <tr> 1150 <td><a href="command-line-options.html#spread">-spread <var>radius</var></a></td> 1151 <td>displace image pixels by a random amount</td> 1152 </tr> 1153 1154 <tr> 1155 <td><a href="command-line-options.html#statistic">-statistic <var>type</var> <var>geometry</var></a></td> 1156 <td>replace each pixel with corresponding statistic from the neighborhood</td> 1157 </tr> 1158 1159 <tr> 1160 <td><a href="command-line-options.html#strip">-strip</a></td> 1161 <td>strip image of all profiles and comments</td> 1162 </tr> 1163 1164 <tr> 1165 <td><a href="command-line-options.html#stroke">-stroke <var>color</var></a></td> 1166 <td>graphic primitive stroke color</td> 1167 </tr> 1168 1169 <tr> 1170 <td><a href="command-line-options.html#strokewidth">-strokewidth <var>value</var></a></td> 1171 <td>graphic primitive stroke width</td> 1172 </tr> 1173 1174 <tr> 1175 <td><a href="command-line-options.html#stretch">-stretch <var>type</var></a></td> 1176 <td>render text with this font stretch</td> 1177 </tr> 1178 1179 <tr> 1180 <td><a href="command-line-options.html#style">-style <var>type</var></a></td> 1181 <td>render text with this font style</td> 1182 </tr> 1183 1184 <tr> 1185 <td><a href="command-line-options.html#swap">-swap <var>indexes</var></a></td> 1186 <td>swap two images in the image sequence</td> 1187 </tr> 1188 1189 <tr> 1190 <td><a href="command-line-options.html#swirl">-swirl <var>degrees</var></a></td> 1191 <td>swirl image pixels about the center</td> 1192 </tr> 1193 1194 <tr> 1195 <td><a href="command-line-options.html#synchronize">-synchronize</a></td> 1196 <td>synchronize image to storage device</td> 1197 </tr> 1198 1199 <tr> 1200 <td><a href="command-line-options.html#texture">-texture <var>filename</var></a></td> 1201 <td>name of texture to tile onto the image background</td> 1202 </tr> 1203 1204 <tr> 1205 <td><a href="command-line-options.html#threshold">-threshold <var>value</var></a></td> 1206 <td>threshold the image</td> 1207 </tr> 1208 1209 <tr> 1210 <td><a href="command-line-options.html#thumbnail">-thumbnail <var>geometry</var></a></td> 1211 <td>create a thumbnail of the image</td> 1212 </tr> 1213 1214 <tr> 1215 <td><a href="command-line-options.html#tile">-tile <var>filename</var></a></td> 1216 <td>tile image when filling a graphic primitive</td> 1217 </tr> 1218 1219 <tr> 1220 <td><a href="command-line-options.html#tile-offset">-tile-offset <var>geometry</var></a></td> 1221 <td>set the image tile offset</td> 1222 </tr> 1223 1224 <tr> 1225 <td><a href="command-line-options.html#tint">-tint <var>value</var></a></td> 1226 <td>tint the image with the fill color</td> 1227 </tr> 1228 1229 <tr> 1230 <td><a href="command-line-options.html#transform">-transform</a></td> 1231 <td>affine transform image</td> 1232 </tr> 1233 1234 <tr> 1235 <td><a href="command-line-options.html#transparent">-transparent <var>color</var></a></td> 1236 <td>make this color transparent within the image</td> 1237 </tr> 1238 1239 <tr> 1240 <td><a href="command-line-options.html#transparent-color">-transparent-color <var>color</var></a></td> 1241 <td>transparent color</td> 1242 </tr> 1243 1244 <tr> 1245 <td><a href="command-line-options.html#transpose">-transpose</a></td> 1246 <td>flip image in the vertical direction and rotate 90 degrees</td> 1247 </tr> 1248 1249 <tr> 1250 <td><a href="command-line-options.html#transverse">-transverse</a></td> 1251 <td>flop image in the horizontal direction and rotate 270 degrees</td> 1252 </tr> 1253 1254 <tr> 1255 <td><a href="command-line-options.html#treedepth">-treedepth <var>value</var></a></td> 1256 <td>color tree depth</td> 1257 </tr> 1258 1259 <tr> 1260 <td><a href="command-line-options.html#trim">-trim</a></td> 1261 <td>trim image edges</td> 1262 </tr> 1263 1264 <tr> 1265 <td><a href="command-line-options.html#type">-type <var>type</var></a></td> 1266 <td>image type</td> 1267 </tr> 1268 1269 <tr> 1270 <td><a href="command-line-options.html#undercolor">-undercolor <var>color</var></a></td> 1271 <td>annotation bounding box color</td> 1272 </tr> 1273 1274 <tr> 1275 <td><a href="command-line-options.html#unique-colors">-unique-colors</a></td> 1276 <td>discard all but one of any pixel color.</td> 1277 </tr> 1278 1279 <tr> 1280 <td><a href="command-line-options.html#units">-units <var>type</var></a></td> 1281 <td>the units of image resolution</td> 1282 </tr> 1283 1284 <tr> 1285 <td><a href="command-line-options.html#unsharp">-unsharp <var>geometry</var></a></td> 1286 <td>sharpen the image</td> 1287 </tr> 1288 1289 <tr> 1290 <td><a href="command-line-options.html#verbose">-verbose</a></td> 1291 <td>print detailed information about the image</td> 1292 </tr> 1293 1294 <tr> 1295 <td><a href="command-line-options.html#version">-version</a></td> 1296 <td>print version information</td> 1297 </tr> 1298 1299 <tr> 1300 <td><a href="command-line-options.html#view">-view</a></td> 1301 <td>FlashPix viewing transforms</td> 1302 </tr> 1303 1304 <tr> 1305 <td><a href="command-line-options.html#vignette">-vignette <var>geometry</var></a></td> 1306 <td>soften the edges of the image in vignette style</td> 1307 </tr> 1308 1309 <tr> 1310 <td><a href="command-line-options.html#virtual-pixel">-virtual-pixel <var>method</var></a></td> 1311 <td>access method for pixels outside the boundaries of the image</td> 1312 </tr> 1313 1314 <tr> 1315 <td><a href="command-line-options.html#wave">-wave <var>geometry</var></a></td> 1316 <td>alter an image along a sine wave</td> 1317 </tr> 1318 1319 <tr> 1320 <td><a href="command-line-options.html#wavelet">-wavelet-denoise <var>threshold</var></a></td> 1321 <td>removes noise from the image using a wavelet transform</td> 1322 </tr> 1323 1324 <tr> 1325 <td><a href="command-line-options.html#weight">-weight <var>type</var></a></td> 1326 <td>render text with this font weight</td> 1327 </tr> 1328 1329 <tr> 1330 <td><a href="command-line-options.html#white-point">-white-point <var>point</var></a></td> 1331 <td>chromaticity white point</td> 1332 </tr> 1333 1334 <tr> 1335 <td><a href="command-line-options.html#white-threshold">-white-threshold <var>value</var></a></td> 1336 <td>force all pixels above the threshold into white</td> 1337 </tr> 1338 1339 <tr> 1340 <td><a href="command-line-options.html#write">-write <var>filename</var></a></td> 1341 <td>write images to this file</td> 1342 </tr> 1343 1344 <tr> 1345 <td><a href="command-line-options.html#write-mask">-write-mask 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