JavaScript壓縮工具

基礎的JavaScript壓縮：移除註解和不必要的空白。生產環境請使用真正的壓縮工具（Terser、esbuild）。

如何使用本工具

1
Paste or type your JavaScript into the input textarea.
2
The minified output appears instantly in the panel below as you type — there is no button to press.
3
Check the size readout (original length, an arrow, and minified length) to see how much was removed.
4
Select the text in the output box and copy it manually into your file.

JavaScript壓縮可減小程式碼套件體積並縮短剖析時間。本工具執行基礎的空白和註解移除。對於生產環境的程式碼套件，請使用Terser、esbuild或SWC：它們會進行變數名稱混淆和死碼消除，從而產生體積大幅縮小的輸出（通常可減少60%到80%）。

Quickly shrinking a short, comment-heavy snippet before pasting it into a tight inline <script> tag.
Stripping comments out of a code sample to share a compact version in a chat or gist.
Estimating roughly how much comment and whitespace overhead a small file carries before setting up a real build.
Cleaning up a hand-written configuration object or constant block that has no strings containing slashes.
Demonstrating to students or teammates what basic comment and whitespace removal looks like versus a real compiler.
Minifying a tiny utility function for a bookmarklet where pulling in a full toolchain is overkill.

它和Terser相比如何？▼

Terser要積極得多：變數名稱混淆、死碼消除等。本工具只移除註解和空白。

這會破壞我的程式碼嗎？▼

只有當你的JS存在語法問題時（在含義不明確的位置缺少分號）才會。現代JavaScript是安全的。