diff --git a/lib/org-ruby/image_regexp.rb b/lib/org-ruby/image_regexp.rb
index 6fc9db4..3ddc880 100644
--- a/lib/org-ruby/image_regexp.rb
+++ b/lib/org-ruby/image_regexp.rb
@@ -1,7 +1,7 @@
 module Orgmode
   module ImageRegexp
     def image_file
-      /\.(gif|jpe?g|p(?:bm|gm|n[gm]|pm)|svgz?|tiff?|x[bp]m)/i
+      /\.(gif|jpe?g|webp|p(?:bm|gm|n[gm]|pm)|svgz?|tiff?|x[bp]m)/i
     end
   end
 end
diff --git a/lib/org-ruby/markdown_output_buffer.rb b/lib/org-ruby/markdown_output_buffer.rb
index 418ee4a..649c236 100644
--- a/lib/org-ruby/markdown_output_buffer.rb
+++ b/lib/org-ruby/markdown_output_buffer.rb
@@ -49,10 +49,10 @@ def inline_formatting(input)
       @re_help.rewrite_links input do |link, defi|
         # We don't add a description for images in links, because its
         # empty value forces the image to be inlined.
-        defi ||= link unless link =~ @re_help.org_image_file_regexp
+        defi ||= link unless RegexpHelper.image_file.match(link)
         link = link.gsub(/ /, "%%20")
 
-        if defi =~ @re_help.org_image_file_regexp
+        if RegexpHelper.image_file.match(defi)
           "![#{defi}](#{defi})"
         elsif defi
           "[#{defi}](#{link})"
diff --git a/lib/org-ruby/regexp_helper.rb b/lib/org-ruby/regexp_helper.rb
index 5d18f8d..26c1250 100644
--- a/lib/org-ruby/regexp_helper.rb
+++ b/lib/org-ruby/regexp_helper.rb
@@ -170,10 +170,6 @@ def org_emphasis_regexp
                  "(?=#{post_emphasis})")
     end
 
-    def org_image_file_regexp
-      /\.(gif|jpe?g|p(?:bm|gm|n[gm]|pm)|svgz?|tiff?|x[bp]m)/i
-    end
-
     private
 
     def pre_emphasis_regexp
diff --git a/lib/org-ruby/textile_output_buffer.rb b/lib/org-ruby/textile_output_buffer.rb
index 0c5bf8e..7271ca9 100644
--- a/lib/org-ruby/textile_output_buffer.rb
+++ b/lib/org-ruby/textile_output_buffer.rb
@@ -61,10 +61,10 @@ def inline_formatting(input)
 
         # We don't add a description for images in links, because its
         # empty value forces the image to be inlined.
-        defi ||= link unless link =~ @re_help.org_image_file_regexp
+        defi ||= link unless RegexpHelper.image_file.match(link)
         link = link.gsub(/ /, "%%20")
 
-        if defi =~ @re_help.org_image_file_regexp
+        if RegexpHelper.image_file.match(defi)
           defi = "!#{defi}(#{defi})!"
         elsif defi
           defi = "\"#{defi}\""
diff --git a/spec/html_examples/escape-pre.html b/spec/html_examples/escape-pre.html
index 0671519..125df07 100644
--- a/spec/html_examples/escape-pre.html
+++ b/spec/html_examples/escape-pre.html
@@ -1,6 +1,6 @@
 <pre class="example">
-&lt;li&gt;[ ] &amp;#8220;smart quotes&amp;#8221;&lt;/li&gt; 
-&lt;li&gt;[ ] I think I need this for &amp;#8216;single quotes&amp;#8217; too. Don&amp;#8217;t I?&lt;/li&gt; 
-&lt;li&gt;[ ] Em dashes would be great &amp;#8212; wouldn&amp;#8217;t they?&lt;/li&gt; 
-&lt;li&gt;[ ] I hope to develop an en dash sometime in 2010 &amp;#8211; 2011.&lt;/li&gt; 
+&lt;li&gt;[ ] &amp;#8220;smart quotes&amp;#8221;&lt;/li&gt;
+&lt;li&gt;[ ] I think I need this for &amp;#8216;single quotes&amp;#8217; too. Don&amp;#8217;t I?&lt;/li&gt;
+&lt;li&gt;[ ] Em dashes would be great &amp;#8212; wouldn&amp;#8217;t they?&lt;/li&gt;
+&lt;li&gt;[ ] I hope to develop an en dash sometime in 2010 &amp;#8211; 2011.&lt;/li&gt;
 </pre>
diff --git a/spec/html_examples/escape-pre.org b/spec/html_examples/escape-pre.org
index abcb4a7..0635b87 100644
--- a/spec/html_examples/escape-pre.org
+++ b/spec/html_examples/escape-pre.org
@@ -1,6 +1,6 @@
     #+BEGIN_EXAMPLE
-<li>[ ] &#8220;smart quotes&#8221;</li> 
-<li>[ ] I think I need this for &#8216;single quotes&#8217; too. Don&#8217;t I?</li> 
-<li>[ ] Em dashes would be great &#8212; wouldn&#8217;t they?</li> 
-<li>[ ] I hope to develop an en dash sometime in 2010 &#8211; 2011.</li> 
-    #+END_EXAMPLE
+<li>[ ] &#8220;smart quotes&#8221;</li>
+<li>[ ] I think I need this for &#8216;single quotes&#8217; too. Don&#8217;t I?</li>
+<li>[ ] Em dashes would be great &#8212; wouldn&#8217;t they?</li>
+<li>[ ] I hope to develop an en dash sometime in 2010 &#8211; 2011.</li>
+   #+END_EXAMPLE
diff --git a/spec/html_examples/include-file.html b/spec/html_examples/include-file.html
index cb8ab74..c0b0535 100644
--- a/spec/html_examples/include-file.html
+++ b/spec/html_examples/include-file.html
@@ -77,10 +77,10 @@ <h2>Continue numbered list</h2>
 <p>And now back to normal!</p>
 <h2>Within a commented block</h2>
 <pre class="example">
-&lt;li&gt;[ ] &amp;#8220;smart quotes&amp;#8221;&lt;/li&gt; 
-&lt;li&gt;[ ] I think I need this for &amp;#8216;single quotes&amp;#8217; too. Don&amp;#8217;t I?&lt;/li&gt; 
-&lt;li&gt;[ ] Em dashes would be great &amp;#8212; wouldn&amp;#8217;t they?&lt;/li&gt; 
-&lt;li&gt;[ ] I hope to develop an en dash sometime in 2010 &amp;#8211; 2011.&lt;/li&gt; 
+&lt;li&gt;[ ] &amp;#8220;smart quotes&amp;#8221;&lt;/li&gt;
+&lt;li&gt;[ ] I think I need this for &amp;#8216;single quotes&amp;#8217; too. Don&amp;#8217;t I?&lt;/li&gt;
+&lt;li&gt;[ ] Em dashes would be great &amp;#8212; wouldn&amp;#8217;t they?&lt;/li&gt;
+&lt;li&gt;[ ] I hope to develop an en dash sometime in 2010 &amp;#8211; 2011.&lt;/li&gt;
 </pre>
 <h2>Within a center block</h2>
 <div style="text-align: center">
@@ -98,6 +98,7 @@ <h2>Within a center block</h2>
     <li>.jpeg</li>
     <li>.svg</li>
     <li>.svgz</li>
+    <li>.webp</li>
   </ul>
   <p>Sample absolute link to .svg:</p>
   <p><img src="https://www.w3.org/Graphics/SVG/Test/20110816/svg/animate-dom-01-f.svg" alt="https://www.w3.org/Graphics/SVG/Test/20110816/svg/animate-dom-01-f.svg" /></p>
@@ -129,6 +130,7 @@ <h2>Within a blockquote</h2>
     <li>.jpeg</li>
     <li>.svg</li>
     <li>.svgz</li>
+    <li>.webp</li>
   </ul>
   <p>Sample absolute link to .svg:</p>
   <p><img src="https://www.w3.org/Graphics/SVG/Test/20110816/svg/animate-dom-01-f.svg" alt="https://www.w3.org/Graphics/SVG/Test/20110816/svg/animate-dom-01-f.svg" /></p>
diff --git a/spec/html_examples/inline-images.html b/spec/html_examples/inline-images.html
index 81cc074..9705747 100644
--- a/spec/html_examples/inline-images.html
+++ b/spec/html_examples/inline-images.html
@@ -11,6 +11,7 @@
   <li>.jpeg</li>
   <li>.svg</li>
   <li>.svgz</li>
+  <li>.webp</li>
 </ul>
 <p>Sample absolute link to .svg:</p>
 <p><img src="https://www.w3.org/Graphics/SVG/Test/20110816/svg/animate-dom-01-f.svg" alt="https://www.w3.org/Graphics/SVG/Test/20110816/svg/animate-dom-01-f.svg" /></p>
diff --git a/spec/html_examples/inline-images.org b/spec/html_examples/inline-images.org
index 5e93af3..74f3297 100644
--- a/spec/html_examples/inline-images.org
+++ b/spec/html_examples/inline-images.org
@@ -14,6 +14,7 @@ the inline image. I recognize the following image file types:
 - .jpeg
 - .svg
 - .svgz
+- .webp
 
 Sample absolute link to .svg:
 
diff --git a/spec/markdown_examples/inline-images.md b/spec/markdown_examples/inline-images.md
index fef912e..fc45b4c 100644
--- a/spec/markdown_examples/inline-images.md
+++ b/spec/markdown_examples/inline-images.md
@@ -14,6 +14,7 @@ the inline image. I recognize the following image file types:
  * .jpeg
  * .svg
  * .svgz
+ * .webp
 
 Sample .svg:
 
diff --git a/spec/markdown_examples/inline-images.org b/spec/markdown_examples/inline-images.org
index 3f85ac0..39b4df6 100644
--- a/spec/markdown_examples/inline-images.org
+++ b/spec/markdown_examples/inline-images.org
@@ -14,6 +14,7 @@ the inline image. I recognize the following image file types:
 - .jpeg
 - .svg
 - .svgz
+- .webp
 
 Sample .svg:
 
diff --git a/spec/org-ruby/image_regexp_spec.rb b/spec/org-ruby/image_regexp_spec.rb
index 64af06a..02e8576 100644
--- a/spec/org-ruby/image_regexp_spec.rb
+++ b/spec/org-ruby/image_regexp_spec.rb
@@ -15,6 +15,7 @@ class DummyRegexp
       it { expect(regexp.image_file).to match 'some/path/file.gif' }
       it { expect(regexp.image_file).to match 'other.svgz' }
       it { expect(regexp.image_file).to match 'tiffany.tiff' }
+      it { expect(regexp.image_file).to match 'file.webp' }
       it { expect(regexp.image_file).to match 'xx.xpm' }
       it { expect(regexp.image_file).to match 'yy.xbm' }