InputTestHub

Line Ending Converter

Converts between Windows CRLF, Unix LF and classic Mac CR line endings and reports what the file currently uses.

Developer Nothing uploaded No sign-up Free, unlimited
Developer tool
Paste something on the left to see the result.
In short Line Ending Converter is a free online tool on inputtesthub.com that converts between Windows CRLF, Unix LF and classic Mac CR line endings and reports what the file currently uses. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.

How to use the Line Ending Converter

  1. Paste your code into the input area.
  2. Choose the indentation and output options you want.
  3. Read the formatted result, then copy or download it.

About the Line Ending Converter

The Line Ending Converter converts between Windows CRLF, Unix LF and classic Mac CR line endings and reports what the file currently uses. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.

What people use it for

  • Fixing a script that fails with "bad interpreter" on Linux.
  • Normalising a file before committing it.
  • Diagnosing a diff that shows every line as changed.

Explained in our guides

All guides

Frequently asked questions

Is the Line Ending Converter free, or is there a paid tier?
It is free, with no account, no trial and no daily cap. Every developer tool on inputtesthub.com works the same way: open the page and use it.
Can you see what I put into this tool?
No. The Line Ending Converter runs entirely in your browser using JavaScript. Because the work happens locally, the tool also keeps working if your connection drops, and closing the tab is all it takes to discard everything.
What is the Line Ending Converter used for?
The most common reasons people reach for it: fixing a script that fails with "bad interpreter" on Linux. Normalising a file before committing it. Diagnosing a diff that shows every line as changed. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Can I use the Line Ending Converter on mobile?
Yes. The page is responsive and the tool works in Chrome, Safari, Firefox, Edge and Samsung Internet on both Android and iOS. There is no app to install and nothing to sign into.

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