Comment Stripper

How to use

1. 1Pick the language of your source code from the language grid. Each option lists the comment styles it understands.
2. 2Paste your code into the input area. Click Load sample to see a worked example for the selected language.
3. 3Toggle Strip line comments and Strip block comments to control which kinds of comments are removed.
4. 4Toggle Collapse blank lines and Trim trailing whitespace to clean up the blank lines and dangling spaces left behind by removed comments.
5. 5Click Copy on the output to copy the stripped result to the clipboard. The character-count summary shows how much was removed.

About this tool

Comment Stripper removes line and block comments from source code across 13 language families using string-aware tokenizers, so a comment-like sequence that appears inside a string literal is preserved instead of being deleted. Supported languages include JavaScript and TypeScript (with template literals, interpolations, and regex literals), C-family languages (C, C++, Java, Go, Rust, C#, Swift, Kotlin), CSS, SCSS and LESS, HTML, XML and SVG, JSON, JSONC and JSON5, SQL, Python (with triple-quoted strings and docstrings preserved), Shell and Bash, YAML and TOML, Ruby, Perl, R, and Lua (including the long-bracket comment syntax). Choose whether to strip line comments, block comments, or both. Optional cleanup steps collapse runs of 3 or more consecutive blank lines (a common artifact of removing block comments) and trim trailing whitespace at the end of each line. The tool reports input and output character counts and the percentage reduction so you can confirm the result. Useful for converting JSONC or JSON5 to plain JSON before a parser that does not allow comments, sanitizing snippets before publishing them, stripping internal TODOs and review notes from a paste, and producing a smaller minify-ready source file. All processing runs locally in your browser; the source code never leaves the device.

Free to use. Works in your browser. No signup, no login.