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<p class="navigation-index">[<a href="#usage">Example Usage</a> • <a href="#options">Option Summary</a>]</p>
<p>Use the <kbd>composite</kbd> program overlaps 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>
<div style="margin: auto;">
<h2><a name="usage"></a>Example Usage</h2>
</div>
<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 letter over a a rose:</p>
<pre class="text">
composite -gravity center smile.gif rose: rose-over.png
</pre>
<p class="image">
<a href="../images/smile.gif"><img src="../images/smile.gif" width="52" height="56" align="middle" alt="smile" /></a> <em>over</em>
<a href="../images/rose.jpg"><img src="../images/rose.jpg" width="70" height="46" align="middle" alt="rose" /></a>
<img src="../images/right.gif" width="20" height="20" align="middle" alt="==>" />
<a href="../images/rose-over.png"><img src="../images/rose-over.png" width="70" height="46" align="middle" alt="rose" /></a>
</p>
<p>You can create three-dimensional effect with the <em>Atop</em>:</p>
<pre class="text">
convert -size 70x70 xc:none -fill red -draw 'circle 35,35 10,30' red-circle.png
convert -size 70x70 xc:none -draw 'circle 35,35 35,20' -negate -channel A -gaussian 0x8 white-highlight.png
composite -compose atop -geometry -13-17 white-highlight.png red-circle.png red-ball.png
</pre>
<p class="image">
<a href="../images/white-highlight.png"><img src="../images/white-highlight.png" width="70" height="70" align="middle" alt="white highlight" /></a> <em>atop</em>
<a href="../images/red-circle.png"><img src="../images/red-circle.png" width="70" height="70" align="middle" alt="red circle" /></a>
<img src="../images/right.gif" width="20" height="20" align="middle" alt="==>" />
<a href="../images/red-ball.png"><img src="../images/red-ball.png" width="70" height="70" align="middle" alt="red ball" /></a>
</p>
<p>You can find additional examples of using <kbd>composite</kbd> in <a href="http://www.imagemagick.org/Usage/" target="226751312">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" target="354114101">SVG Alpha Compositing</a></p>
<div style="margin: auto;">
<h2><a name="options"></a>Option Summary</h2>
</div>
<p>The <kbd>composite</kbd> command recognizes these options. Click on an option to get more details about how that option works.</p>
<table id="table" cellpadding="2" cellspacing="0" style="width: 93%">
<tbody>
<tr>
<th align="left">Option</th>
<th align="left">Description</th>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#affine" target="magick-options">-affine <em class="option">matrix</em></a></td>
<td valign="top">affine transform matrix</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#alpha" target="magick-options">-alpha</a></td>
<td valign="top">activate, deactivate, reset, or set the alpha channel</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#authenticate" target="magick-options">-authenticate <em class="option">value</em></a></td>
<td valign="top">decrypt image with this password</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#blend" target="magick-options">-blend <em class="option">geometry</em></a></td>
<td valign="top">blend images</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#blue-primary" target="magick-options">-blue-primary <em class="option">point</em></a></td>
<td valign="top">chromaticity blue primary point</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#channel" target="magick-options">-channel <em class="option">type</em></a></td>
<td valign="top">apply option to select image channels</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#colors" target="magick-options">-colors <em class="option">value</em></a></td>
<td valign="top">preferred number of colors in the image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#colorspace" target="magick-options">-colorspace <em class="option">type</em></a></td>
<td valign="top">set image colorspace</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#comment" target="magick-options">-comment <em class="option">string</em></a></td>
<td valign="top">annotate image with comment</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#compose" target="magick-options">-compose <em class="option">operator</em></a></td>
<td valign="top">set image composite operator</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#compress" target="magick-options">-compress <em class="option">type</em></a></td>
<td valign="top">image compression type</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#debug" target="magick-options">-debug <em class="option">events</em></a></td>
<td valign="top">display copious debugging information</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#decipher" target="magick-options">-decipher <em class="option">filename</em></a></td>
<td valign="top">convert cipher pixels to plain</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#define" target="magick-options">-define <em class="option">format:option</em></a></td>
<td valign="top">define one or more image format options</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#density" target="magick-options">-density <em class="option">geometry</em></a></td>
<td valign="top">horizontal and vertical density of the image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#depth" target="magick-options">-depth <em class="option">value</em></a></td>
<td valign="top">image depth</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#displace" target="magick-options">-displace <em class="option">geometry</em></a></td>
<td valign="top">shift image pixels defined by a displacement map</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#dissolve" target="magick-options">-dissolve <em class="option">value</em></a></td>
<td valign="top">dissolve the two images a given percent</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#dither" target="magick-options">-dither</a></td>
<td valign="top">apply Floyd/Steinberg error diffusion to image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#encipher" target="magick-options">-encipher <em class="option">filename</em></a></td>
<td valign="top">convert plain pixels to cipher pixels</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#encoding" target="magick-options">-encoding <em class="option">type</em></a></td>
<td valign="top">text encoding type</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#endian" target="magick-options">-endian <em class="option">type</em></a></td>
<td valign="top">endianness (MSB or LSB) of the image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#extract" target="magick-options">-extract <em class="option">geometry</em></a></td>
<td valign="top">extract area from image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#filter" target="magick-options">-filter <em class="option">type</em></a></td>
<td valign="top">use this filter when resizing an image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#font" target="magick-options">-font <em class="option">name</em></a></td>
<td valign="top">render text with this font</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#geometry" target="magick-options">-geometry <em class="option">geometry</em></a></td>
<td valign="top">preferred size or location of the image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#gravity" target="magick-options">-gravity <em class="option">type</em></a></td>
<td valign="top">horizontal and vertical text placement</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#green-primary" target="magick-options">-green-primary <em class="option">point</em></a></td>
<td valign="top">chromaticity green primary point</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#help" target="magick-options">-help</a></td>
<td valign="top">print program options</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#identify" target="magick-options">-identify</a></td>
<td valign="top">identify the format and characteristics of the image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#interlace" target="magick-options">-interlace <em class="option">type</em></a></td>
<td valign="top">type of image interlacing scheme</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#interpolate">-interpolate <em class="option">method</em></a></td>
<td valign="top">pixel color interpolation method</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#label" target="magick-options">-label <em class="option">string</em></a></td>
<td valign="top">assign a label to an image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#level" target="magick-options">-level <em class="option">value</em></a></td>
<td valign="top">adjust the level of image contrast</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#limit" target="magick-options">-limit <em class="option">type value</em></a></td>
<td valign="top">pixel cache resource limit</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#log" target="magick-options">-log <em class="option">format</em></a></td>
<td valign="top">format of debugging information</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#monitor" target="magick-options">-monitor</a></td>
<td valign="top">monitor progress</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#monochrome" target="magick-options">-monochrome</a></td>
<td valign="top">transform image to black and white</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#negate" target="magick-options">-negate</a></td>
<td valign="top">replace every pixel with its complementary color </td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#page" target="magick-options">-page <em class="option">geometry</em></a></td>
<td valign="top">size and location of an image canvas (setting)</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#profile" target="magick-options">-profile <em class="option">filename</em></a></td>
<td valign="top">add, delete, or apply an image profile</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#quality" target="magick-options">-quality <em class="option">value</em></a></td>
<td valign="top">JPEG/MIFF/PNG compression level</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#quantize" target="magick-options">-quantize <em class="option">colorspace</em></a></td>
<td valign="top">reduce image colors in this colorspace</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#quiet" target="magick-options">-quiet</a></td>
<td valign="top">suppress all warning messages</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#red-primary" target="magick-options">-red-primary <em class="option">point</em></a></td>
<td valign="top">chromaticity red primary point</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#regard-warnings" target="magick-options">-regard-warnings</a></td>
<td valign="top">pay attention to warning messages.</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#rotate" target="magick-options">-rotate <em class="option">degrees</em></a></td>
<td valign="top">apply Paeth rotation to the image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#sampling-factor" target="magick-options">-sampling-factor <em class="option">geometry</em></a></td>
<td valign="top">horizontal and vertical sampling factor</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#scene" target="magick-options">-scene <em class="option">value</em></a></td>
<td valign="top">image scene number</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#seed" target="magick-options">-seed <em class="option">value</em></a></td>
<td valign="top">seed a new sequence of pseudo-random numbers</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#set" target="magick-options">-set <em class="option">attribute value</em></a></td>
<td valign="top">set an image attribute</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#sharpen" target="magick-options">-sharpen <em class="option">geometry</em></a></td>
<td valign="top">sharpen the image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#size" target="magick-options">-size <em class="option">geometry</em></a></td>
<td valign="top">width and height of image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#stegano" target="magick-options">-stegano <em>offset</em></a></td>
<td valign="top">hide watermark within an image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#strip" target="magick-options">-strip</a></td>
<td valign="top">strip image of all profiles and comments</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#thumbnail" target="magick-options">-thumbnail <em class="option">geometry</em></a></td>
<td valign="top">create a thumbnail of the image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#tile" target="magick-options">-tile</a></td>
<td valign="top">repeat composite operation across and down image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#transform" target="magick-options">-transform</a></td>
<td valign="top">affine transform image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#transparent-color" target="magick-options">-transparent-color <em class="option">color</em></a></td>
<td valign="top">transparent color</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#treedepth" target="magick-options">-treedepth <em class="option">value</em></a></td>
<td valign="top">color tree depth</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#type" target="magick-options">-type <em class="option">type</em></a></td>
<td valign="top">image type</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#units" target="magick-options">-units <em class="option">type</em></a></td>
<td valign="top">the units of image resolution</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#unsharp" target="magick-options">-unsharp <em class="option">geometry</em></a></td>
<td valign="top">sharpen the image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#verbose" target="magick-options">-verbose</a></td>
<td valign="top">print detailed information about the image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#version" target="magick-options">-version</a></td>
<td valign="top">print version information</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#virtual-pixel" target="magick-options">-virtual-pixel <em class="option">method</em></a></td>
<td valign="top">access method for pixels outside the boundaries of the image</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#watermark" target="magick-options">-watermark <em class="option">geometry</em></a></td>
<td valign="top">percent brightness and saturation of a watermark</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#white-point" target="magick-options">-white-point <em class="option">point</em></a></td>
<td valign="top">chromaticity white point</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#white-threshold" target="magick-options">-white-threshold <em class="option">value</em></a></td>
<td valign="top">force all pixels above the threshold into white</td>
</tr>
<tr>
<td valign="top"><a href="../www/command-line-options.html#write" target="magick-options">-write <em class="option">filename</em></a></td>
<td valign="top">write images to this file</td>
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