diff --git a/build/build.js b/build/build.js
index cc5dd62a..e87cb233 100644
--- a/build/build.js
+++ b/build/build.js
@@ -10,7 +10,12 @@ var build = function (opts) {
   rollup
     .rollup({
       entry: 'src/' + opts.entry,
-      plugins: (opts.plugins || []).concat([buble(), commonjs(), nodeResolve()])
+      plugins: (opts.plugins || []).concat([
+        string({ include: '**/*.css' }),
+        buble(),
+        commonjs(),
+        nodeResolve()
+      ])
     })
     .then(function (bundle) {
       var dest = 'lib/' + (opts.output || opts.entry)
@@ -45,12 +50,7 @@ plugins.forEach(item => {
   build({
     entry: 'plugins/' + item.entry,
     output: 'plugins/' + item.name + '.js',
-    moduleName: 'D.' + item.moduleName,
-    plugins: [
-      string({
-        include: '**/*.css'
-      })
-    ]
+    moduleName: 'D.' + item.moduleName
   })
 })
 
diff --git a/docs/_coverpage.md b/docs/_coverpage.md
index 3958c72f..ee6f6300 100644
--- a/docs/_coverpage.md
+++ b/docs/_coverpage.md
@@ -1,6 +1,6 @@
 ![logo](_media/icon.svg)
 
-# docsify <small>3.3</small>
+# docsify <small>3.4</small>
 
 > A magical documentation site generator.
 
diff --git a/lib/plugins/zoom-image.js b/lib/plugins/zoom-image.js
new file mode 100644
index 00000000..910c3b36
--- /dev/null
+++ b/lib/plugins/zoom-image.js
@@ -0,0 +1,304 @@
+this.D = this.D || {};
+(function () {
+'use strict';
+
+var commonjsGlobal = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
+
+
+
+
+
+function createCommonjsModule(fn, module) {
+	return module = { exports: {} }, fn(module, module.exports), module.exports;
+}
+
+var zoomImage = createCommonjsModule(function (module, exports) {
+(function (global, factory) {
+  module.exports = factory();
+}(commonjsGlobal, (function () { 'use strict';
+
+var windowWidth = function () { return document.documentElement.clientWidth; };
+var windowHeight = function () { return document.documentElement.clientHeight; };
+
+var elemOffset = function (elem) {
+  var rect = elem.getBoundingClientRect();
+  var docElem = document.documentElement;
+  var win = window;
+  return {
+    top: rect.top + win.pageYOffset - docElem.clientTop,
+    left: rect.left + win.pageXOffset - docElem.clientLeft
+  }
+};
+
+var once = function (elem, type, handler) {
+  var fn = function (e) {
+    e.target.removeEventListener(type, fn);
+    handler();
+  };
+  elem.addEventListener(type, fn);
+};
+
+var Size = function Size(w, h) {
+  this.w = w;
+  this.h = h;
+};
+
+var ZoomImage = function ZoomImage(img, offset) {
+  this.img = img;
+  this.preservedTransform = img.style.transform;
+  this.wrap = null;
+  this.overlay = null;
+  this.offset = offset;
+};
+
+ZoomImage.prototype.forceRepaint = function forceRepaint () {
+  var _ = this.img.offsetWidth;
+  return
+};
+
+ZoomImage.prototype.zoom = function zoom () {
+  var size = new Size(this.img.naturalWidth, this.img.naturalHeight);
+
+  this.wrap = document.createElement('div');
+  this.wrap.classList.add('zoom-img-wrap');
+  this.img.parentNode.insertBefore(this.wrap, this.img);
+  this.wrap.appendChild(this.img);
+
+  this.img.classList.add('zoom-img');
+  this.img.setAttribute('data-action', 'zoom-out');
+
+  this.overlay = document.createElement('div');
+  this.overlay.classList.add('zoom-overlay');
+  document.body.appendChild(this.overlay);
+
+  this.forceRepaint();
+  var scale = this.calculateScale(size);
+
+  this.forceRepaint();
+  this.animate(scale);
+
+  document.body.classList.add('zoom-overlay-open');
+};
+
+ZoomImage.prototype.calculateScale = function calculateScale (size) {
+  var maxScaleFactor = size.w / this.img.width;
+
+  var viewportWidth = (windowWidth() - this.offset);
+  var viewportHeight = (windowHeight() - this.offset);
+  var imageAspectRatio = size.w / size.h;
+  var viewportAspectRatio = viewportWidth / viewportHeight;
+
+  if (size.w < viewportWidth && size.h < viewportHeight) {
+    return maxScaleFactor
+  } else if (imageAspectRatio < viewportAspectRatio) {
+    return (viewportHeight / size.h) * maxScaleFactor
+  }
+  return (viewportWidth / size.w) * maxScaleFactor
+};
+
+ZoomImage.prototype.animate = function animate (scale) {
+  var imageOffset = elemOffset(this.img);
+  var scrollTop = window.pageYOffset;
+
+  var viewportX = (windowWidth() / 2);
+  var viewportY = scrollTop + (windowHeight() / 2);
+
+  var imageCenterX = imageOffset.left + (this.img.width / 2);
+  var imageCenterY = imageOffset.top + (this.img.height / 2);
+
+  var tx = viewportX - imageCenterX;
+  var ty = viewportY - imageCenterY;
+  var tz = 0;
+
+  var imgTr = "scale(" + scale + ")";
+  var wrapTr = "translate3d(" + tx + "px, " + ty + "px, " + tz + "px)";
+
+  this.img.style.transform = imgTr;
+  this.wrap.style.transform = wrapTr;
+};
+
+ZoomImage.prototype.dispose = function dispose () {
+  if (this.wrap === null || this.wrap.parentNode === null) {
+    return
+  }
+  this.img.classList.remove('zoom-img');
+  this.img.setAttribute('data-action', 'zoom');
+
+  this.wrap.parentNode.insertBefore(this.img, this.wrap);
+  this.wrap.parentNode.removeChild(this.wrap);
+
+  document.body.removeChild(this.overlay);
+  document.body.classList.remove('zoom-overlay-transitioning');
+};
+
+ZoomImage.prototype.close = function close () {
+    var this$1 = this;
+
+  document.body.classList.add('zoom-overlay-transitioning');
+  this.img.style.transform = this.preservedTransform;
+  if (this.img.style.length === 0) {
+    this.img.removeAttribute('style');
+  }
+  this.wrap.style.transform = 'none';
+
+  once(this.img, 'transitionend', function () {
+    this$1.dispose();
+    // remove class should happen after dispose. Otherwise,
+    // a new click event could fire and create a duplicate ZoomImage for
+    // the same <img> element.
+    document.body.classList.remove('zoom-overlay-open');
+  });
+};
+
+/**
+ * Pure JavaScript implementation of zoom.js.
+ *
+ * Original preamble:
+ * zoom.js - It's the best way to zoom an image
+ * @version v0.0.2
+ * @link https://github.com/fat/zoom.js
+ * @license MIT
+ *
+ * Needs a related CSS file to work. See the README at
+ * https://github.com/nishanths/zoom.js for more info.
+ *
+ * This is a fork of the original zoom.js implementation by @fat.
+ * Copyrights for the original project are held by @fat. All other copyright
+ * for changes in the fork are held by Nishanth Shanmugham.
+ *
+ * Copyright (c) 2013 @fat
+ * The MIT License. Copyright © 2016 Nishanth Shanmugham.
+ */
+
+var current = null;
+var offset = 80;
+var initialScrollPos = -1;
+var initialTouchPos = -1;
+
+function handleScroll() {
+  if (initialScrollPos === -1) {
+    initialScrollPos = window.pageYOffset;
+  }
+
+  var deltaY = Math.abs(initialScrollPos - window.pageYOffset);
+  if (deltaY >= 40) {
+    closeCurrent();
+  }
+}
+
+function handleKeyup(e) {
+  if (e.keyCode === 27) {
+    closeCurrent();
+  }
+}
+
+function handleTouchStart(e) {
+  var t = e.touches[0];
+  if (t === null) {
+    return
+  }
+
+  initialTouchPos = t.pageY;
+  e.target.addEventListener('touchmove', handleTouchMove);
+}
+
+function handleTouchMove(e) {
+  var t = e.touches[0];
+  if (t === null) {
+    return
+  }
+
+  if (Math.abs(t.pageY - initialTouchPos) > 10) {
+    closeCurrent();
+    e.target.removeEventListener('touchmove', handleTouchMove);
+  }
+}
+
+function handleClick() {
+  closeCurrent();
+}
+
+function addCloseListeners() {
+  document.addEventListener('scroll', handleScroll);
+  document.addEventListener('keyup', handleKeyup);
+  document.addEventListener('touchstart', handleTouchStart);
+  document.addEventListener('click', handleClick, true);
+}
+
+function removeCloseListeners() {
+  document.removeEventListener('scroll', handleScroll);
+  document.removeEventListener('keyup', handleKeyup);
+  document.removeEventListener('touchstart', handleTouchStart);
+  document.removeEventListener('click', handleClick, true);
+}
+
+function closeCurrent(force) {
+  if (current === null) {
+    return
+  }
+  if (force) {
+    current.dispose();
+  } else {
+    current.close();
+  }
+  removeCloseListeners();
+  current = null;
+}
+
+function prepareZoom(e) {
+  if (document.body.classList.contains('zoom-overlay-open')) {
+    return
+  }
+
+  if (e.metaKey || e.ctrlKey) {
+    window.open((e.target.getAttribute('data-original') || e.target.src), '_blank');
+    return
+  }
+
+  if (e.target.width >= windowWidth() - offset) {
+    return
+  }
+
+  closeCurrent(true);
+
+  current = new ZoomImage(e.target, offset);
+  current.zoom();
+
+  addCloseListeners();
+}
+
+var zoom = function (el) {
+  el.setAttribute('data-action', 'zoom');
+  el.addEventListener('click', prepareZoom);
+  return function () { return el.removeEventListener('click', prepareZoom); }
+};
+
+return zoom;
+
+})));
+});
+
+var style = "img[data-action=\"zoom\"] {\n  cursor: pointer;\n  cursor: -webkit-zoom-in;\n  cursor: zoom-in;\n}\n.zoom-img,\n.zoom-img-wrap {\n  position: relative;\n  z-index: 666;\n  transition: -webkit-transform 300ms cubic-bezier(.2,0,.2,1);\n  transition: transform 300ms cubic-bezier(.2,0,.2,1);\n  transition: transform 300ms cubic-bezier(.2,0,.2,1), -webkit-transform 300ms cubic-bezier(.2,0,.2,1);\n}\n.zoom-overlay {\n  z-index: 420;\n  background: #fff;\n  position: fixed;\n  top: 0;\n  left: 0;\n  right: 0;\n  bottom: 0;\n  pointer-events: none;\n  opacity: 0;\n  transition: opacity 300ms;\n}\n.zoom-overlay-open .zoom-overlay {\n  opacity: 1;\n}\n.zoom-overlay-open {\n  cursor: pointer;\n  cursor: -webkit-zoom-out;\n  cursor: zoom-out;\n}\n.zoom-overlay-transitioning {\n  cursor: default;\n}\n.zoom-overlay-open.zoom-overlay-transitioning .zoom-overlay{\n  opacity: 0;\n}\n";
+
+function install (hook) {
+  var dom = Docsify.dom;
+  var destroys;
+
+  // add style
+  dom.appendTo(dom.head, dom.create('style', style));
+
+  hook.doneEach(function (_) {
+    var images = dom.findAll('img:not(.emoji)');
+
+    if (Array.isArray(destroys) && destroys.length) {
+      destroys.forEach(function (o) { return o(); });
+      destroys = [];
+    }
+
+    destroys = images.map(zoomImage);
+  });
+}
+
+$docsify.plugins = [].concat(install, $docsify.plugins);
+
+}());
diff --git a/lib/plugins/zoom-image.min.js b/lib/plugins/zoom-image.min.js
new file mode 100644
index 00000000..af290c6b
--- /dev/null
+++ b/lib/plugins/zoom-image.min.js
@@ -0,0 +1 @@
+this.D=this.D||{},function(){"use strict";function t(t,e){return e={exports:{}},t(e,e.exports),e.exports}function e(t){var e,n=Docsify.dom;n.appendTo(n.head,n.create("style",i)),t.doneEach(function(t){var i=n.findAll("img:not(.emoji)");Array.isArray(e)&&e.length&&(e.forEach(function(t){return t()}),e=[]),e=i.map(o)})}var n="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:{},o=t(function(t,e){!function(e,n){t.exports=n()}(n,function(){function t(){g===-1&&(g=window.pageYOffset);var t=Math.abs(g-window.pageYOffset);t>=40&&a()}function e(t){27===t.keyCode&&a()}function n(t){var e=t.touches[0];null!==e&&(y=e.pageY,t.target.addEventListener("touchmove",o))}function o(t){var e=t.touches[0];null!==e&&Math.abs(e.pageY-y)>10&&(a(),t.target.removeEventListener("touchmove",o))}function i(){a()}function r(){document.addEventListener("scroll",t),document.addEventListener("keyup",e),document.addEventListener("touchstart",n),document.addEventListener("click",i,!0)}function s(){document.removeEventListener("scroll",t),document.removeEventListener("keyup",e),document.removeEventListener("touchstart",n),document.removeEventListener("click",i,!0)}function a(t){null!==h&&(t?h.dispose():h.close(),s(),h=null)}function c(t){if(!document.body.classList.contains("zoom-overlay-open"))return t.metaKey||t.ctrlKey?void window.open(t.target.getAttribute("data-original")||t.target.src,"_blank"):void(t.target.width>=m()-v||(a(!0),h=new p(t.target,v),h.zoom(),r()))}var m=function(){return document.documentElement.clientWidth},u=function(){return document.documentElement.clientHeight},d=function(t){var e=t.getBoundingClientRect(),n=document.documentElement,o=window;return{top:e.top+o.pageYOffset-n.clientTop,left:e.left+o.pageXOffset-n.clientLeft}},l=function(t,e,n){var o=function(t){t.target.removeEventListener(e,o),n()};t.addEventListener(e,o)},f=function(t,e){this.w=t,this.h=e},p=function(t,e){this.img=t,this.preservedTransform=t.style.transform,this.wrap=null,this.overlay=null,this.offset=e};p.prototype.forceRepaint=function(){this.img.offsetWidth},p.prototype.zoom=function(){var t=new f(this.img.naturalWidth,this.img.naturalHeight);this.wrap=document.createElement("div"),this.wrap.classList.add("zoom-img-wrap"),this.img.parentNode.insertBefore(this.wrap,this.img),this.wrap.appendChild(this.img),this.img.classList.add("zoom-img"),this.img.setAttribute("data-action","zoom-out"),this.overlay=document.createElement("div"),this.overlay.classList.add("zoom-overlay"),document.body.appendChild(this.overlay),this.forceRepaint();var e=this.calculateScale(t);this.forceRepaint(),this.animate(e),document.body.classList.add("zoom-overlay-open")},p.prototype.calculateScale=function(t){var e=t.w/this.img.width,n=m()-this.offset,o=u()-this.offset,i=t.w/t.h,r=n/o;return t.w<n&&t.h<o?e:i<r?o/t.h*e:n/t.w*e},p.prototype.animate=function(t){var e=d(this.img),n=window.pageYOffset,o=m()/2,i=n+u()/2,r=e.left+this.img.width/2,s=e.top+this.img.height/2,a=o-r,c=i-s,l=0,f="scale("+t+")",p="translate3d("+a+"px, "+c+"px, "+l+"px)";this.img.style.transform=f,this.wrap.style.transform=p},p.prototype.dispose=function(){null!==this.wrap&&null!==this.wrap.parentNode&&(this.img.classList.remove("zoom-img"),this.img.setAttribute("data-action","zoom"),this.wrap.parentNode.insertBefore(this.img,this.wrap),this.wrap.parentNode.removeChild(this.wrap),document.body.removeChild(this.overlay),document.body.classList.remove("zoom-overlay-transitioning"))},p.prototype.close=function(){var t=this;document.body.classList.add("zoom-overlay-transitioning"),this.img.style.transform=this.preservedTransform,0===this.img.style.length&&this.img.removeAttribute("style"),this.wrap.style.transform="none",l(this.img,"transitionend",function(){t.dispose(),document.body.classList.remove("zoom-overlay-open")})};var h=null,v=80,g=-1,y=-1,w=function(t){return t.setAttribute("data-action","zoom"),t.addEventListener("click",c),function(){return t.removeEventListener("click",c)}};return w})}),i='img[data-action="zoom"] {\n  cursor: pointer;\n  cursor: -webkit-zoom-in;\n  cursor: zoom-in;\n}\n.zoom-img,\n.zoom-img-wrap {\n  position: relative;\n  z-index: 666;\n  transition: -webkit-transform 300ms cubic-bezier(.2,0,.2,1);\n  transition: transform 300ms cubic-bezier(.2,0,.2,1);\n  transition: transform 300ms cubic-bezier(.2,0,.2,1), -webkit-transform 300ms cubic-bezier(.2,0,.2,1);\n}\n.zoom-overlay {\n  z-index: 420;\n  background: #fff;\n  position: fixed;\n  top: 0;\n  left: 0;\n  right: 0;\n  bottom: 0;\n  pointer-events: none;\n  opacity: 0;\n  transition: opacity 300ms;\n}\n.zoom-overlay-open .zoom-overlay {\n  opacity: 1;\n}\n.zoom-overlay-open {\n  cursor: pointer;\n  cursor: -webkit-zoom-out;\n  cursor: zoom-out;\n}\n.zoom-overlay-transitioning {\n  cursor: default;\n}\n.zoom-overlay-open.zoom-overlay-transitioning .zoom-overlay{\n  opacity: 0;\n}\n';$docsify.plugins=[].concat(e,$docsify.plugins)}();