diff --git a/index.html b/index.html
index f6761b5..4a232c0 100644
--- a/index.html
+++ b/index.html
@@ -2372,8 +2372,8 @@
       <!-- End About ImageMagick -->
 
       <!-- Compare two images -->
-      <label class="recipe" for="im_strip">Compare two images</label>
-      <input type="checkbox" id="im_strip">
+      <label class="recipe" for="im_compare">Compare two images</label>
+      <input type="checkbox" id="im_compare">
       <div class="hiding">
         <h3>Compare two images</h3>
         <p><code>compare -metric ae <i>image1.ext image2.ext</i> null:</code></p>
@@ -2425,6 +2425,25 @@
       </div>
       <!-- ends Create grid of images --> 
 
+      <!-- Get file signature data -->
+      <label class="recipe" for="im_sig_data">Get file signature data</label>
+      <input type="checkbox" id="im_sig_data">
+      <div class="hiding">
+        <h3>Get file signature data</h3>
+        <p><code>convert -verbose <i>input_file.ext</i> | grep -i signature </code></p>
+        <p>Gets signature data from an image file, which is a hash that can be used to uniquely identify the image.</p>
+        <dl>
+          <dt>convert</dt><dd>starts the command</dd>
+          <dt>-verbose</dt><dd>sets verbose flag for collecting the most data</dd>
+          <dt><i>input_file.ext</i></dt><dd>path and name of image file</dd>
+          <dt>|</dt><dd>pipe the data into something else</dd>
+          <dt>grep</dt><dd>starts the grep command</dd>
+          <dt>-i signature</dt><dd>ignore case and search for the phrase "signature"</dd>
+        </dl>
+        <p class="link"></p>
+      </div>
+      <!-- ends Get file signature data -->  
+
       <!-- Remove exif data -->
       <label class="recipe" for="im_strip">Removes exif metadata</label>
       <input type="checkbox" id="im_strip">