diff --git a/lib/jekyll/static_file.rb b/lib/jekyll/static_file.rb
index 0ab88cbd..454f1247 100644
--- a/lib/jekyll/static_file.rb
+++ b/lib/jekyll/static_file.rb
@@ -18,7 +18,7 @@ module Jekyll
       @name = name
       @collection = collection
       @relative_path = File.join(*[@dir, @name].compact)
-      @extname = File.extname(@relative_path)
+      @extname = File.extname(@name)
     end
 
     # Returns source file path.
@@ -43,9 +43,13 @@ module Jekyll
       end
     end
 
+    def modified_time
+      @modified_time ||= File.stat(path).mtime
+    end
+
     # Returns last modification time for this file.
     def mtime
-      File.stat(path).mtime.to_i
+      modified_time.to_i
     end
 
     # Is source path modified?
@@ -91,9 +95,9 @@ module Jekyll
 
     def to_liquid
       {
-        "path"          => File.join("", relative_path),
-        "modified_time" => mtime.to_s,
-        "extname"       => extname
+        "extname"       => extname,
+        "modified_time" => modified_time,
+        "path"          => File.join("", relative_path)
       }
     end
   end
diff --git a/site/_data/docs.yml b/site/_data/docs.yml
index 474f73fa..bcdf352d 100644
--- a/site/_data/docs.yml
+++ b/site/_data/docs.yml
@@ -13,6 +13,7 @@
   - posts
   - drafts
   - pages
+  - static-files
   - variables
   - collections
   - datafiles
diff --git a/site/_docs/collections.md b/site/_docs/collections.md
index 9f7c6be5..e55378af 100644
--- a/site/_docs/collections.md
+++ b/site/_docs/collections.md
@@ -96,9 +96,9 @@ written out to `<dest>/awesome/some_subdir/some_doc/index.html`.
 <div class="note info">
   <h5>Don't forget to add YAML for processing</h5>
   <p>
-Files in collections that do not have front matter are treated
-as static files and simply copied to their output location without
-processing.
+  Files in collections that do not have front matter are treated as
+  <a href="/docs/static-files">static files</a> and simply copied to their
+  output location without processing.
   </p>
 </div>
 
diff --git a/site/_docs/static_files.md b/site/_docs/static_files.md
new file mode 100644
index 00000000..00afbaec
--- /dev/null
+++ b/site/_docs/static_files.md
@@ -0,0 +1,52 @@
+---
+layout: docs
+title: Static Files
+permalink: /docs/static-files/
+---
+
+In addition to renderable and convertible content, we also have **static
+files**.
+
+A static file is a file that does not contain any YAML front matter. These
+include images, PDFs, and other un-rendered content.
+
+They're accessible in Liquid via `site.static_files` and contain the
+following metadata:
+
+<div class="mobile-side-scroller">
+<table>
+  <thead>
+    <tr>
+      <th>Variable</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><p><code>file.path</code></p></td>
+      <td><p>
+
+        The relative path to the file.
+
+      </p></td>
+    </tr>
+    <tr>
+      <td><p><code>file.modified_time</code></p></td>
+      <td><p>
+
+        The `Time` the file was last modified.
+
+      </p></td>
+    </tr>
+    <tr>
+      <td><p><code>file.extname</code></p></td>
+      <td><p>
+
+        The extension name for the file, e.g.
+        <code>.jpg</code> for <code>image.jpg</code>
+
+      </p></td>
+    </tr>
+  </tbody>
+</table>
+</div>
diff --git a/site/_docs/variables.md b/site/_docs/variables.md
index 11ff633b..d3c5d946 100644
--- a/site/_docs/variables.md
+++ b/site/_docs/variables.md
@@ -114,9 +114,10 @@ following is a reference of the available data.
       <td><p><code>site.static_files</code></p></td>
       <td><p>
 
-        A list of all static files (i.e. files not processed by Jekyll's
-        converters or the Liquid renderer). Each file has three properties:
-        <code>path</code>, <code>modified_time</code> and <code>extname</code>.
+        A list of all <a href="/docs/static-files/">static files</a> (i.e.
+        files not processed by Jekyll's converters or the Liquid renderer).
+        Each file has three properties: <code>path</code>,
+        <code>modified_time</code> and <code>extname</code>.
 
       </p></td>
     </tr>
diff --git a/test/source/static_files.html b/test/source/static_files.html
index 878b7ebe..fb0786a7 100644
--- a/test/source/static_files.html
+++ b/test/source/static_files.html
@@ -1,4 +1,4 @@
 ---
 ---
 {% for file in site.static_files %}
-- {{ file.path }} last edited at {{ file.modified_time }} with extname {{ file.extname }}{% endfor %}
+- {{ file.path }} last edited at {{ file.modified_time | date:"%H:%m" }} with extname {{ file.extname }}{% endfor %}
diff --git a/test/test_generated_site.rb b/test/test_generated_site.rb
index b3fe811f..88e0fe9e 100644
--- a/test/test_generated_site.rb
+++ b/test/test_generated_site.rb
@@ -44,11 +44,12 @@ class TestGeneratedSite < JekyllUnitTest
     end
 
     should "print a nice list of static files" do
+      time_regexp = "\\d+:\\d+"
       expected_output = Regexp.new <<-OUTPUT
-- /css/screen.css last edited at \\d+ with extname .css
-- /pgp.key last edited at \\d+ with extname .key
-- /products.yml last edited at \\d+ with extname .yml
-- /symlink-test/symlinked-dir/screen.css last edited at \\d+ with extname .css
+- /css/screen.css last edited at #{time_regexp} with extname .css
+- /pgp.key last edited at #{time_regexp} with extname .key
+- /products.yml last edited at #{time_regexp} with extname .yml
+- /symlink-test/symlinked-dir/screen.css last edited at #{time_regexp} with extname .css
 OUTPUT
       assert_match expected_output, File.read(dest_dir('static_files.html'))
     end
diff --git a/test/test_static_file.rb b/test/test_static_file.rb
index 97206263..3285f952 100644
--- a/test/test_static_file.rb
+++ b/test/test_static_file.rb
@@ -75,9 +75,9 @@ class TestStaticFile < JekyllUnitTest
 
     should "be able to convert to liquid" do
       expected = {
-          "path" => "/static_file.txt",
-          "modified_time" => @static_file.mtime.to_s,
-          "extname" => ".txt"
+          "extname"       => ".txt",
+          "modified_time" => @static_file.modified_time,
+          "path"          => "/static_file.txt",
       }
       assert_equal expected, @static_file.to_liquid
     end