How it works
Paste or type your text in the box and Comment Out Lines transforms it instantly — no button to press. The result updates live as you edit, runs entirely in your browser, and you can copy the output with one click.
Examples
- “line one ⏎ line two” → “// line one ⏎ // line two”
Frequently asked questions
How do I use the Comment Out Lines?
Paste or type your text into the input box. Comment Out Lines processes it live and shows the result immediately — then just copy it. There is no limit on how much text you can process.
Is my data private?
Yes. The Comment Out Lines runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.
Is the Comment Out Lines free?
Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on developer tools and the rest of the platform, you can use it as often as you like.
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