🔓 JS 代码反混淆 / 解包美化JavaScript Deobfuscator & Unpacker
把压缩或混淆过的 JavaScript 尽量还原成可读代码：自动解包 Dean Edwards 的 eval(function(p,a,c,k,e,d)…) 打包器（可多层），还原 \x / \u 转义字符串，折叠 unescape、atob、String.fromCharCode 和字符串拼接常量，十六进制数字转十进制，把 obj["prop"] 改为 obj.prop，最后格式化缩进；纯静态文本处理，不执行代码。Make minified or obfuscated JavaScript readable: unpack Dean Edwards’ eval(function(p,a,c,k,e,d)…) packer (multiple layers), decode \x / \u escapes, fold unescape, atob, String.fromCharCode and concatenated literals, convert hex numbers, turn obj["prop"] into obj.prop and beautify — all as static text transforms, never executing the code.
所有处理都是静态文本变换，代码不会被执行（打包器解包只计算字符串，不运行其中逻辑），也不会上传。可以处理常见的 Dean Edwards 打包器、转义字符串和简单的常量拼接；对控制流平坦化、字符串数组轮换等强混淆只能做到格式化，变量名无法恢复。请只用于分析你有权查看的代码，例如排查网页里的可疑脚本。Everything is a static text transform — the code is never executed (the packer is unpacked by string substitution) or uploaded. Handles Dean Edwards packer, escaped strings and simple constant folding; heavy obfuscation (control-flow flattening, rotated string arrays) can only be beautified and original names can’t be recovered. Use it on code you’re entitled to inspect, e.g. a suspicious script on a page.
使用说明与常见问题How-to & FAQ
「JS 代码反混淆 / 解包美化」是什么？What is the JavaScript Deobfuscator & Unpacker?
把压缩或混淆过的 JavaScript 尽量还原成可读代码：自动解包 Dean Edwards 的 eval(function(p,a,c,k,e,d)…) 打包器（可多层），还原 \x / \u 转义字符串，折叠 unescape、atob、String.fromCharCode 和字符串拼接常量，十六进制数字转十进制，把 obj["prop"] 改为 obj.prop，最后格式化缩进；纯静态文本处理，不执行代码。Make minified or obfuscated JavaScript readable: unpack Dean Edwards’ eval(function(p,a,c,k,e,d)…) packer (multiple layers), decode \x / \u escapes, fold unescape, atob, String.fromCharCode and concatenated literals, convert hex numbers, turn obj["prop"] into obj.prop and beautify — all as static text transforms, never executing the code.
如何使用「JS 代码反混淆 / 解包美化」？How do I use the JavaScript Deobfuscator & Unpacker?
粘贴代码，按需勾选还原步骤，点“反混淆”。如果结果仍是 eval 打包，再点一次即可继续解包。Paste the code, choose the steps and press Deobfuscate. If the result is still packed, run it again.
能完全还原原始代码吗？Can it restore the original source?
不能。压缩和混淆会丢掉原来的变量名和注释，工具只能把结构和字符串恢复成可读形式。No — minifiers drop original names and comments; the tool restores readable structure and strings.
会执行我粘贴的代码吗？Does it run my code?
不会。所有步骤都是对文本做替换和格式化，打包器的解包也是按其字典替换字符串，不会运行代码中的逻辑，可以安全查看可疑脚本。No. Every step is a text transform; the packer is unpacked by dictionary substitution, so suspicious scripts are safe to inspect.
「JS 代码反混淆 / 解包美化」免费吗？文件会上传吗？Is the JavaScript Deobfuscator & Unpacker free? Are my files uploaded?
「JS 代码反混淆 / 解包美化」完全免费，无需注册。你输入的内容只在本机浏览器里处理（部分设置会保存在本机方便下次使用），不会上传到任何服务器。The JavaScript Deobfuscator & Unpacker is free with no sign-up. What you enter is processed only in this browser (some settings are kept locally for next time) and is never uploaded.