Best Free Online Developer Tools to Use in 2026
A practical, opinionated list of the best free online developer tools worth using in 2026, organized by category so you can find what you need fast.
Aug 08, 2026
Code Comment Remover
Remove single-line, multi-line, and doc comments from source code across multiple languages.
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Original: 0 bytes
Cleaned: 0 bytes
Saved: 0%
Paste source code above to remove comments.
What is Code Comment Remover?
Code comments are essential for documentation and collaboration, but there are many situations where you need to strip them out. This tool removes single-line comments (//), multi-line comments (/* */), and documentation comments (/** */) from source code across multiple programming languages.
The tool uses language-specific comment syntax detection, so it correctly handles the different comment styles used in JavaScript, PHP, Python, Java, Go, Ruby, and C/C++. This means it knows, for example, that Python uses # for single-line comments while JavaScript uses //.
Common use cases include stripping comments before code review to focus on logic, cleaning up third-party code before integration, preparing code for minification or obfuscation, comparing file sizes with and without comments, and removing auto-generated documentation blocks from boilerplate code.
How to Use This Tool
- Select a language — Choose your programming language from the dropdown. JavaScript, PHP, Python, Java, Go, Ruby, and C/C++ are supported.
- Paste your code — Paste source code containing comments into the input textarea.
- Choose comment types — Toggle which comment types to remove: single-line, multi-line, and/or documentation blocks.
- Review changes — The cleaned output appears in real time below. Check the byte count comparison to see how much space was saved.
- Copy the result — Click Copy Cleaned to copy the comment-free code to your clipboard. Use Load Sample to test the tool with example code.
Frequently Asked Questions
Does this tool modify the actual logic of my code?
No. It only removes comment syntax. The actual code, strings, and logic remain completely unchanged. Comments inside strings (e.g., var x = "// not a comment") are preserved.
Can I use this for production code?
Yes, but use with caution. Removing comments from production code can make future debugging harder. It is best used as part of a build or minification pipeline rather than modifying your source files permanently.
What happens to comments inside strings?
Comments inside string literals are preserved as-is. The parser correctly distinguishes between comment syntax and text that looks like comments within strings. Your string content will not be altered.
How accurate is the language-specific parsing?
The parser uses the correct comment syntax for each selected language. For languages with similar comment styles (like JavaScript, Java, and C++), the parser also considers language-specific edge cases. For best results, always select the correct language.
Is my code sent to a server?
No. All processing is performed entirely in your browser. Your source code never leaves your device, making it safe for sensitive or proprietary code.
Last updated: 17 Aug 2026
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