diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..dfe0770
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+# Auto detect text files and perform LF normalization
+* text=auto
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..00cbbdf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,59 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Typescript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..fd776f4
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2018 xfgryujk
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
\ No newline at end of file
diff --git a/weibo-img-crypto.js b/weibo-img-crypto.js
new file mode 100644
index 0000000..ad782fb
--- /dev/null
+++ b/weibo-img-crypto.js
@@ -0,0 +1,40 @@
+window.isWbImgCryptoLoaded || (function () {
+  window.isWbImgCryptoLoaded = true
+
+  function encrypt (data) {
+    const KEY = 0xAA
+    for (let i = 0; i < data.length; i += 4) {
+      data[i] ^= KEY
+      data[i + 1] ^= KEY
+      data[i + 2] ^= KEY
+    }
+  }
+
+  // Hook FileReader.readAsDataURL
+  let originalReadAsDataURL = window.FileReader.prototype.readAsDataURL
+  window.FileReader.prototype.readAsDataURL = function (file) {
+    if (file.type.startsWith('image/') && file.type !== 'image/gif') { // GIF is not supported at present
+      // Hook onloadend
+      let originalOnloadend = this.onloadend
+      this.onloadend = () => {
+        let img = new window.Image()
+        img.onload = () => {
+          let canvas = document.createElement('canvas');
+          [canvas.width, canvas.height] = [img.width, img.height]
+          let ctx = canvas.getContext('2d')
+          ctx.drawImage(img, 0, 0)
+
+          // 加密
+          let imgData = ctx.getImageData(0, 0, img.width, img.height)
+          encrypt(imgData.data)
+          ctx.putImageData(imgData, 0, 0)
+
+          // 替换上传的图片
+          originalOnloadend({target: {result: canvas.toDataURL()}})
+        }
+        img.src = this.result
+      }
+    }
+    originalReadAsDataURL.call(this, file)
+  }
+})()