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 171 <p class="navigation-index">[<a href="#usage">Example Usage</a> &bull; <a href="#options">Option Summary</a>]</p>
 172
 173 <p>Use the <kbd>composite</kbd> program to overlap one image over another.  See <a href="../www/command-line-processing.html">Command Line Processing</a> for advice on how to structure your <kbd>composite</kbd> command or see below for example usages of the command.</p>
 174
 175 <div style="margin: auto;">
 176   <h2><a name="usage"></a>Example Usage</h2>
 177 </div>
 178
 179 <p>We list a few examples of the <kbd>composite</kbd> command here to illustrate its usefulness and ease of use.  To get started, lets overlay a smiley face over a rose:</p>
 180
 181 <p class='crt'><span class="crtprompt"> $magick&gt; </span><span class='crtin'>composite -gravity center smile.gif  rose: rose-over.png</span></p>
 182 <div class="image">
 183 <p>
 184   <a href="../images/smile.gif"><img src="../images/smile.gif" width="48" height="48" alt="smile" /></a>
 185   <img src="../images/over.gif" width="56" height="46" alt="over" />
 186   <a href="../images/rose.jpg"><img src="../images/rose.jpg" width="70" height="46" alt="rose" /></a>
 187   <img style="margin-top:13px; margin-bottom:13px;" src="../images/right.gif" width="20" height="20" alt="==>" />
 188   <a href="../images/rose-over.png"><img src="../images/rose-over.png" width="70" height="46" alt="rose" /></a>
 189 </p>
 190 </div>
 191
 192 <p>You can create three-dimensional effect with the <em>Atop</em>:</p>
 193
 194 <p class='crt'><span class="crtprompt"> $magick&gt; </span><span class='crtin'>convert -size 70x70 xc:none -fill red -draw 'circle 35,35 10,30' red-circle.png</span><span class='crtout'></span><span class="crtprompt"> $magick&gt; </span><span class='crtin'>convert -size 70x70 xc:none -draw 'circle 35,35 35,20' -negate \ <br/>
 195   -channel A -gaussian-blur 0x8 white-highlight.png</span><span class='crtout'></span><span class="crtprompt"> $magick&gt; </span><span class='crtin'>composite -compose atop -geometry -13-17 white-highlight.png red-circle.png red-ball.png</span></p>
 196
 197 <div class="image">
 198 <p>
 199   <a href="../images/white-highlight.png"><img src="../images/white-highlight.png" width="70" height="70" alt="white highlight" /></a>
 200   <img src="../images/atop.gif" width="56" height="70" alt="atop" />
 201   <a href="../images/red-circle.png"><img src="../images/red-circle.png" width="70" height="70" alt="red circle" /></a>
 202   <img style="margin-top:25px; margin-bottom:25px;" src="../images/right.gif" width="20" height="20" alt="==>" />
 203   <a href="../images/red-ball.png"><img src="../images/red-ball.png" width="70" height="70" alt="red ball" /></a>
 204 </p>
 205 </div>
 206
 207 <p>You can find additional examples of using <kbd>composite</kbd> in <a href="http://www.imagemagick.org/Usage/">Examples of ImageMagick Usage</a>.  You can find out more about them and the mathematics by looking at <a href="http://www.w3.org/TR/SVG12/rendering.html">SVG Alpha Compositing</a></p>
 208
 209 <div style="margin: auto;">
 210   <h2><a name="options"></a>Option Summary</h2>
 211 </div>
 212
 213 <p>The <kbd>composite</kbd> command recognizes these options.  Click on an option to get more details about how that option works.</p>
 214
 215 <table class="doc">
 216   <tbody>
 217   <tr>
 218     <th align="left">Option</th>
 219     <th align="left">Description</th>
 220   </tr>
 221
 222   <tr>
 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>
 225   </tr>
 226
 227   <tr>
 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>
 231   </tr>
 232
 233   <tr>
 234     <td valign="top"><a href="../www/command-line-options.html#authenticate">-authenticate <em class="option">value</em></a></td>
 235     <td valign="top">decrypt image with this password</td>
 236   </tr>
 237
 238   <tr>
 239     <td valign="top"><a href="../www/command-line-options.html#blend">-blend <em class="option">geometry</em></a></td>
 240     <td valign="top">blend images</td>
 241   </tr>
 242
 243   <tr>
 244     <td valign="top"><a href="../www/command-line-options.html#blue-primary">-blue-primary <em class="option">point</em></a></td>
 245     <td valign="top">chromaticity blue primary point</td>
 246   </tr>
 247
 248
 249   <tr>
 250     <td valign="top"><a href="../www/command-line-options.html#border">-border <em class="option">geometry</em></a></td>
 251     <td valign="top">surround image with a border of color</td>
 252   </tr>
 253
 254   <tr>
 255     <td valign="top"><a href="../www/command-line-options.html#bordercolor">-bordercolor <em class="option">color</em></a></td>
 256     <td valign="top">border color</td>
 257   </tr>
 258
 259   <tr>
 260     <td valign="top"><a href="../www/command-line-options.html#channel">-channel <em class="option">type</em></a></td>
 261     <td valign="top">apply option to select image channels</td>
 262   </tr>
 263
 264   <tr>
 265     <td valign="top"><a href="../www/command-line-options.html#colors">-colors <em class="option">value</em></a></td>
 266     <td valign="top">preferred number of colors in the image</td>
 267   </tr>
 268
 269   <tr>
 270     <td valign="top"><a href="../www/command-line-options.html#colorspace">-colorspace <em class="option">type</em></a></td>
 271     <td valign="top">set image colorspace</td>
 272   </tr>
 273
 274   <tr>
 275     <td valign="top"><a href="../www/command-line-options.html#comment">-comment <em class="option">string</em></a></td>
 276     <td valign="top">annotate image with comment</td>
 277   </tr>
 278
 279   <tr>
 280     <td valign="top"><a href="../www/command-line-options.html#compose">-compose <em class="option">operator</em></a></td>
 281     <td valign="top">set image composite operator</td>
 282   </tr>
 283
 284   <tr>
 285     <td valign="top"><a href="../www/command-line-options.html#compress">-compress <em class="option">type</em></a></td>
 286     <td valign="top">image compression type</td>
 287   </tr>
 288
 289   <tr>
 290     <td valign="top"><a href="../www/command-line-options.html#debug">-debug <em class="option">events</em></a></td>
 291     <td valign="top">display copious debugging information</td>
 292   </tr>
 293
 294   <tr>
 295     <td valign="top"><a href="../www/command-line-options.html#decipher">-decipher <em class="option">filename</em></a></td>
 296     <td valign="top">convert cipher pixels to plain</td>
 297   </tr>
 298
 299   <tr>
 300     <td valign="top"><a href="../www/command-line-options.html#define">-define <em class="option">format:option</em></a></td>
 301     <td valign="top">define one or more image format options</td>
 302   </tr>
 303
 304   <tr>
 305     <td valign="top"><a href="../www/command-line-options.html#density">-density <em class="option">geometry</em></a></td>
 306     <td valign="top">horizontal and vertical density of the image</td>
 307   </tr>
 308
 309   <tr>
 310     <td valign="top"><a href="../www/command-line-options.html#depth">-depth <em class="option">value</em></a></td>
 311     <td valign="top">image depth</td>
 312   </tr>
 313
 314   <tr>
 315     <td valign="top"><a href="../www/command-line-options.html#displace">-displace <em class="option">geometry</em></a></td>
 316     <td valign="top">shift image pixels defined by a displacement map</td>
 317   </tr>
 318
 319   <tr>
 320     <td valign="top"><a href="../www/command-line-options.html#dissolve">-dissolve <em class="option">value</em></a></td>
 321     <td valign="top">dissolve the two images a given percent</td>
 322   </tr>
 323
 324   <tr>
 325     <td valign="top"><a href="../www/command-line-options.html#dither">-dither  <em class="option">method</em></a></td>
 326     <td valign="top">apply error diffusion to image</td>
 327   </tr>
 328
 329   <tr>
 330     <td valign="top"><a href="../www/command-line-options.html#encipher">-encipher <em class="option">filename</em></a></td>
 331     <td valign="top">convert plain pixels to cipher pixels</td>
 332   </tr>
 333
 334   <tr>
 335     <td valign="top"><a href="../www/command-line-options.html#encoding">-encoding <em class="option">type</em></a></td>
 336     <td valign="top">text encoding type</td>
 337   </tr>
 338
 339   <tr>
 340     <td valign="top"><a href="../www/command-line-options.html#endian">-endian <em class="option">type</em></a></td>
 341     <td valign="top">endianness (MSB or LSB) of the image</td>
 342   </tr>
 343
 344   <tr>
 345     <td valign="top"><a href="../www/command-line-options.html#extract">-extract <em class="option">geometry</em></a></td>
 346     <td valign="top">extract area from image</td>
 347   </tr>
 348
 349   <tr>
 350     <td valign="top"><a href="../www/command-line-options.html#filter">-filter <em class="option">type</em></a></td>
 351     <td valign="top">use this filter when resizing an image</td>
 352   </tr>
 353
 354   <tr>
 355     <td valign="top"><a href="../www/command-line-options.html#font">-font <em class="option">name</em></a></td>
 356     <td valign="top">render text with this font</td>
 357   </tr>
 358
 359   <tr>
 360     <td valign="top"><a href="../www/command-line-options.html#geometry">-geometry <em class="option">geometry</em></a></td>
 361     <td valign="top">preferred size or location of the image</td>
 362   </tr>
 363
 364   <tr>
 365     <td valign="top"><a href="../www/command-line-options.html#gravity">-gravity <em class="option">type</em></a></td>
 366     <td valign="top">horizontal and vertical text placement</td>
 367   </tr>
 368
 369   <tr>
 370     <td valign="top"><a href="../www/command-line-options.html#green-primary">-green-primary <em class="option">point</em></a></td>
 371     <td valign="top">chromaticity green primary point</td>
 372   </tr>
 373
 374   <tr>
 375     <td valign="top"><a href="../www/command-line-options.html#help">-help</a></td>
 376     <td valign="top">print program options</td>
 377   </tr>
 378
 379   <tr>
 380     <td valign="top"><a href="../www/command-line-options.html#identify">-identify</a></td>
 381     <td valign="top">identify the format and characteristics of the image</td>
 382   </tr>
 383
 384   <tr>
 385     <td valign="top"><a href="../www/command-line-options.html#interlace">-interlace <em class="option">type</em></a></td>
 386     <td valign="top">type of image interlacing scheme</td>
 387   </tr>
 388
 389   <tr>
 390     <td valign="top"><a href="../www/command-line-options.html#interpolate">-interpolate <em class="option">method</em></a></td>
 391     <td valign="top">pixel color interpolation method</td>
 392   </tr>
 393
 394   <tr>
 395     <td valign="top"><a href="../www/command-line-options.html#label">-label <em class="option">string</em></a></td>
 396     <td valign="top">assign a label to an image</td>
 397   </tr>
 398
 399   <tr>
 400     <td valign="top"><a href="../www/command-line-options.html#level">-level <em class="option">value</em></a></td>
 401     <td valign="top">adjust the level of image contrast</td>
 402   </tr>
 403
 404   <tr>
 405     <td valign="top"><a href="../www/command-line-options.html#limit">-limit <em class="option">type value</em></a></td>
 406     <td valign="top">pixel cache resource limit</td>
 407   </tr>
 408
 409   <tr>
 410     <td valign="top"><a href="../www/command-line-options.html#log">-log <em class="option">format</em></a></td>
 411     <td valign="top">format of debugging information</td>
 412   </tr>
 413
 414   <tr>
 415     <td valign="top"><a href="../www/command-line-options.html#monitor">-monitor</a></td>
 416     <td valign="top">monitor progress</td>
 417   </tr>
 418
 419   <tr>
 420     <td valign="top"><a href="../www/command-line-options.html#monochrome">-monochrome</a></td>
 421     <td valign="top">transform image to black and white</td>
 422   </tr>
 423
 424   <tr>
 425     <td valign="top"><a href="../www/command-line-options.html#negate">-negate</a></td>
 426     <td valign="top">replace each pixel with its complementary color </td>
 427   </tr>
 428
 429   <tr>
 430     <td valign="top"><a href="../www/command-line-options.html#page">-page <em class="option">geometry</em></a></td>
 431     <td valign="top">size and location of an image canvas (setting)</td>
 432   </tr>
 433
 434   <tr>
 435     <td valign="top"><a href="../www/command-line-options.html#pointsize">-pointsize <em class="option">value</em></a></td>
 436     <td valign="top">font point size</td>
 437   </tr>
 438
 439   <tr>
 440     <td valign="top"><a href="../www/command-line-options.html#profile">-profile <em class="option">filename</em></a></td>
 441     <td valign="top">add, delete, or apply an image profile</td>
 442   </tr>
 443
 444   <tr>
 445     <td valign="top"><a href="../www/command-line-options.html#quality">-quality <em class="option">value</em></a></td>
 446     <td valign="top">JPEG/MIFF/PNG compression level</td>
 447   </tr>
 448
 449   <tr>
 450     <td valign="top"><a href="../www/command-line-options.html#quantize">-quantize <em class="option">colorspace</em></a></td>
 451     <td valign="top">reduce image colors in this colorspace</td>
 452   </tr>
 453
 454   <tr>
 455     <td valign="top"><a href="../www/command-line-options.html#quiet">-quiet</a></td>
 456     <td valign="top">suppress all warning messages</td>
 457   </tr>
 458
 459   <tr>
 460     <td valign="top"><a href="../www/command-line-options.html#red-primary">-red-primary <em class="option">point</em></a></td>
 461     <td valign="top">chromaticity red primary point</td>
 462   </tr>
 463
 464   <tr>
 465     <td valign="top"><a href="../www/command-line-options.html#regard-warnings">-regard-warnings</a></td>
 466     <td valign="top">pay attention to warning messages.</td>
 467   </tr>
 468
 469   <tr>
 470     <td valign="top"><a href="../www/command-line-options.html#respect-parentheses">-respect-parentheses</a></td>
 471     <td valign="top">settings remain in effect until parenthesis boundary.</td>
 472   </tr>
 473
 474   <tr>
 475     <td valign="top"><a href="../www/command-line-options.html#rotate">-rotate <em class="option">degrees</em></a></td>
 476     <td valign="top">apply Paeth rotation to the image</td>
 477   </tr>
 478
 479   <tr>
 480     <td valign="top"><a href="../www/command-line-options.html#sampling-factor">-sampling-factor <em class="option">geometry</em></a></td>
 481     <td valign="top">horizontal and vertical sampling factor</td>
 482   </tr>
 483
 484   <tr>
 485     <td valign="top"><a href="../www/command-line-options.html#scene">-scene <em class="option">value</em></a></td>
 486     <td valign="top">image scene number</td>
 487   </tr>
 488
 489   <tr>
 490     <td valign="top"><a href="../www/command-line-options.html#seed">-seed <em class="option">value</em></a></td>
 491     <td valign="top">seed a new sequence of pseudo-random numbers</td>
 492   </tr>
 493
 494   <tr>
 495     <td valign="top"><a href="../www/command-line-options.html#set">-set <em class="option">attribute value</em></a></td>
 496     <td valign="top">set an image attribute</td>
 497   </tr>
 498
 499   <tr>
 500     <td valign="top"><a href="../www/command-line-options.html#sharpen">-sharpen <em class="option">geometry</em></a></td>
 501     <td valign="top">sharpen the image</td>
 502   </tr>
 503
 504   <tr>
 505     <td valign="top"><a href="../www/command-line-options.html#shave">-shave <em class="option">geometry</em></a></td>
 506     <td valign="top">shave pixels from the image edges</td>
 507   </tr>
 508
 509   <tr>
 510     <td valign="top"><a href="../www/command-line-options.html#size">-size <em class="option">geometry</em></a></td>
 511     <td valign="top">width and height of image</td>
 512   </tr>
 513
 514   <tr>
 515     <td valign="top"><a href="../www/command-line-options.html#stegano">-stegano <em>offset</em></a></td>
 516     <td valign="top">hide watermark within an image</td>
 517   </tr>
 518
 519   <tr>
 520     <td valign="top"><a href="../www/command-line-options.html#stereo">-stereo <em class="option">geometry</em></a></td>
 521     <td valign="top">combine two image to create a stereo anaglyph</td>
 522   </tr>
 523
 524   <tr>
 525     <td valign="top"><a href="../www/command-line-options.html#strip">-strip</a></td>
 526     <td valign="top">strip image of all profiles and comments</td>
 527   </tr>
 528
 529   <tr>
 530     <td valign="top"><a href="../www/command-line-options.html#swap">-swap <em class="option">indexes</em></a></td>
 531     <td valign="top">swap two images in the image sequence</td>
 532   </tr>
 533
 534   <tr>
 535     <td valign="top"><a href="../www/command-line-options.html#thumbnail">-thumbnail <em class="option">geometry</em></a></td>
 536     <td valign="top">create a thumbnail of the image</td>
 537   </tr>
 538
 539   <tr>
 540     <td valign="top"><a href="../www/command-line-options.html#tile">-tile</a></td>
 541     <td valign="top">repeat composite operation across and down image</td>
 542   </tr>
 543
 544   <tr>
 545     <td valign="top"><a href="../www/command-line-options.html#transform">-transform</a></td>
 546     <td valign="top">affine transform image</td>
 547   </tr>
 548
 549   <tr>
 550     <td valign="top"><a href="../www/command-line-options.html#transparent-color">-transparent-color <em class="option">color</em></a></td>
 551     <td valign="top">transparent color</td>
 552   </tr>
 553
 554   <tr>
 555     <td valign="top"><a href="../www/command-line-options.html#treedepth">-treedepth <em class="option">value</em></a></td>
 556     <td valign="top">color tree depth</td>
 557   </tr>
 558
 559   <tr>
 560     <td valign="top"><a href="../www/command-line-options.html#type">-type <em class="option">type</em></a></td>
 561     <td valign="top">image type</td>
 562   </tr>
 563
 564   <tr>
 565     <td valign="top"><a href="../www/command-line-options.html#units">-units <em class="option">type</em></a></td>
 566     <td valign="top">the units of image resolution</td>
 567   </tr>
 568
 569   <tr>
 570     <td valign="top"><a href="../www/command-line-options.html#unsharp">-unsharp <em class="option">geometry</em></a></td>
 571     <td valign="top">sharpen the image</td>
 572   </tr>
 573
 574   <tr>
 575     <td valign="top"><a href="../www/command-line-options.html#verbose">-verbose</a></td>
 576     <td valign="top">print detailed information about the image</td>
 577   </tr>
 578
 579   <tr>
 580     <td valign="top"><a href="../www/command-line-options.html#version">-version</a></td>
 581     <td valign="top">print version information</td>
 582   </tr>
 583
 584   <tr>
 585     <td valign="top"><a href="../www/command-line-options.html#virtual-pixel">-virtual-pixel <em class="option">method</em></a></td>
 586     <td valign="top">access method for pixels outside the boundaries of the image</td>
 587   </tr>
 588
 589   <tr>
 590     <td valign="top"><a href="../www/command-line-options.html#watermark">-watermark <em class="option">geometry</em></a></td>
 591     <td valign="top">percent brightness and saturation of a watermark</td>
 592   </tr>
 593
 594   <tr>
 595     <td valign="top"><a href="../www/command-line-options.html#white-point">-white-point <em class="option">point</em></a></td>
 596     <td valign="top">chromaticity white point</td>
 597   </tr>
 598
 599   <tr>
 600     <td valign="top"><a href="../www/command-line-options.html#white-threshold">-white-threshold <em class="option">value</em></a></td>
 601     <td valign="top">force all pixels above the threshold into white</td>
 602   </tr>
 603
 604   <tr>
 605     <td valign="top"><a href="../www/command-line-options.html#write">-write <em class="option">filename</em></a></td>
 606     <td valign="top">write images to this file</td>
 607   </tr>
 608
 609   </tbody>
 610 </table>
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