diff --git a/app.js b/app.js
index beada1612..ecce40197 100644
--- a/app.js
+++ b/app.js
@@ -4,7 +4,7 @@ var fs = require('fs')
 
 http.createServer(function (req, res) {
   serveStatic('.')(req, res, function () {
-    res.writeHead(404, { 'Content-Type': 'text/html' })
+    res.writeHead(200, { 'Content-Type': 'text/html' })
     res.end(fs.readFileSync('dev.html'))
   })
 }).listen(3000, '0.0.0.0')
diff --git a/dev.html b/dev.html
index 63cecbe34..51099d77c 100644
--- a/dev.html
+++ b/dev.html
@@ -30,7 +30,15 @@
     loadSidebar: true,
     name: 'docsify',
     subMaxLevel: 2,
-    mergeNavbar: true
+    mergeNavbar: true,
+    formatUpdated: '{MM}/{DD} {HH}:{mm}',
+    plugins: [
+      function(hook) {
+        hook.beforeEach(function (html) {
+          return html += '> Last modified {docsify-updated}'
+        })
+      }
+    ]
   }
 </script>
 <script src="/lib/docsify.js"></script>
diff --git a/docs/configuration.md b/docs/configuration.md
index 946ac2050..aef9879bd 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -315,3 +315,18 @@ window.$docsify = {
   mergeNavbar: true
 }
 ```
+
+## format-updated
+We can display the file update date through **{docsify-updated<span>}</span>** variable. And format it by `formatUpdated`. 
+See https://github.com/lukeed/tinydate#patterns
+```js
+window.$docsify = {
+  formatUpdated: '{MM}/{DD} {HH}:{mm}',
+
+  formatUpdated: function (time) {
+    // ...
+
+    return time
+  }
+}
+```
diff --git a/docs/de-de/configuration.md b/docs/de-de/configuration.md
index 19ec077d6..12495290e 100644
--- a/docs/de-de/configuration.md
+++ b/docs/de-de/configuration.md
@@ -314,4 +314,19 @@ Navbar will be merged with the sidebar on smaller screens.
 window.$docsify = {
   mergeNavbar: true
 }
-```
\ No newline at end of file
+```
+
+## format-updated
+We can display the file update date through **{docsify-updated<span>}</span>** variable. And format it by `formatUpdated`. 
+See https://github.com/lukeed/tinydate#patterns
+```js
+window.$docsify = {
+  formatUpdated: '{MM}/{DD} {HH}:{mm}',
+
+  formatUpdated: function (time) {
+    // ...
+
+    return time
+  }
+}
+```
diff --git a/docs/index.html b/docs/index.html
index e2bef93f1..04a620c40 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -34,6 +34,7 @@
     loadNavbar: true,
     mergeNavbar: true,
     maxLevel: 4,
+    subMaxLevel: 2,
     name: 'docsify',
     search: {
       noData: {
@@ -48,7 +49,14 @@
         '/': 'Search'
       }
     },
-    subMaxLevel: 2
+    formatUpdated: '{MM}/{DD} {HH}:{mm}',
+    plugins: [
+      function(hook) {
+        hook.beforeEach(function (html) {
+          return html += '> Last modified {docsify-updated}'
+        })
+      }
+    ]
   }
 </script>
 <script src="//unpkg.com/docsify/lib/docsify.min.js"></script>
diff --git a/docs/zh-cn/configuration.md b/docs/zh-cn/configuration.md
index 028a8e1cb..39388d820 100644
--- a/docs/zh-cn/configuration.md
+++ b/docs/zh-cn/configuration.md
@@ -326,3 +326,17 @@ window.$docsify = {
 }
 ```
 
+## format-updated
+我们可以显示文档更新日期通过 **{docsify-updated<span>}</span>** 变量. 并且格式化日期通过 `formatUpdated`. 
+参考 https://github.com/lukeed/tinydate#patterns
+```js
+window.$docsify = {
+  formatUpdated: '{MM}/{DD} {HH}:{mm}',
+
+  formatUpdated: function (time) {
+    // ...
+
+    return time
+  }
+}
+```
\ No newline at end of file
diff --git a/package.json b/package.json
index 33fde579b..4af0b3741 100644
--- a/package.json
+++ b/package.json
@@ -28,6 +28,7 @@
   "dependencies": {
     "marked": "^0.3.6",
     "prismjs": "^1.6.0",
+    "tinydate": "^1.0.0",
     "zoom-image": "^0.1.4"
   },
   "devDependencies": {
diff --git a/src/core/config.js b/src/core/config.js
index 771e46d1e..ecec037e2 100644
--- a/src/core/config.js
+++ b/src/core/config.js
@@ -18,7 +18,8 @@ const config = merge({
   executeScript: null,
   noEmoji: false,
   ga: '',
-  mergeNavbar: false
+  mergeNavbar: false,
+  formatUpdated: ''
 }, window.$docsify)
 
 const script = document.currentScript ||
diff --git a/src/core/fetch/ajax.js b/src/core/fetch/ajax.js
index d9644a9a1..1824cc459 100644
--- a/src/core/fetch/ajax.js
+++ b/src/core/fetch/ajax.js
@@ -14,9 +14,10 @@ export function get (url, hasBar = false) {
   const on = function () {
     xhr.addEventListener.apply(xhr, arguments)
   }
+  const cached = cache[url]
 
-  if (cache[url]) {
-    return { then: cb => cb(cache[url]), abort: noop }
+  if (cached) {
+    return { then: cb => cb(cached.content, cached.opt), abort: noop }
   }
 
   xhr.open('GET', url)
@@ -41,8 +42,14 @@ export function get (url, hasBar = false) {
         if (target.status >= 400) {
           error(target)
         } else {
-          cache[url] = target.response
-          success(target.response)
+          const result = cache[url] = {
+            content: target.response,
+            opt: {
+              updatedAt: xhr.getResponseHeader('last-modified')
+            }
+          }
+
+          success(result.content, result.opt)
         }
       })
     },
diff --git a/src/core/fetch/index.js b/src/core/fetch/index.js
index 0f2380af2..2fc23b9fb 100644
--- a/src/core/fetch/index.js
+++ b/src/core/fetch/index.js
@@ -28,8 +28,8 @@ export function fetchMixin (proto) {
     this.isHTML = /\.html$/g.test(path)
 
     // Load main content
-    last.then(text => {
-      this._renderMain(text)
+    last.then((text, opt) => {
+      this._renderMain(text, opt)
       if (!loadSidebar) return cb()
 
       const fn = result => { this._renderSidebar(result); cb() }
diff --git a/src/core/render/index.js b/src/core/render/index.js
index 04778eb31..648751b4b 100644
--- a/src/core/render/index.js
+++ b/src/core/render/index.js
@@ -8,6 +8,7 @@ import { callHook } from '../init/lifecycle'
 import { getBasePath, getPath, isAbsolutePath } from '../route/util'
 import { isPrimitive } from '../util/core'
 import { isMobile } from '../util/env'
+import tinydate from 'tinydate'
 
 function executeScript () {
   const script = dom.findAll('.markdown-section>script')
@@ -21,6 +22,16 @@ function executeScript () {
   }, 0)
 }
 
+function formatUpdated (html, updated, fn) {
+  updated = typeof fn === 'function'
+    ? fn(updated)
+    : typeof fn === 'string'
+      ? tinydate(fn)(new Date(updated))
+      : updated
+
+  return html.replace(/{docsify-updated}/g, updated)
+}
+
 function renderMain (html) {
   if (!html) {
     // TODO: Custom 404 page
@@ -97,9 +108,11 @@ export function renderMixin (proto) {
     getAndActive('nav')
   }
 
-  proto._renderMain = function (text) {
+  proto._renderMain = function (text, opt) {
     callHook(this, 'beforeEach', text, result => {
-      const html = this.isHTML ? result : markdown(result)
+      let html = this.isHTML ? result : markdown(result)
+      html = formatUpdated(html, opt.updatedAt, this.config.formatUpdated)
+
       callHook(this, 'afterEach', html, text => renderMain.call(this, text))
     })
   }