Clean whitespace and line endings online 12 uses
Trim trailing whitespace, collapse repeated blank lines, and normalize line endings, instantly in your browser.
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- Runs entirely in your browser — your text is never sent to a server
- Normalize line endings between LF and CRLF, and collapse blank lines
- Free, no account required
How it works
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1
Paste the text you want to work with.
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2
The result updates live as you type or paste.
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3
Adjust the options to fine-tune the output.
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4
Copy the cleaned-up or compared result.
Why use this tool
Every dev utility, one place
Format, convert, encode, decode, and generate — no more juggling ten tabs.
100% private, always
Every tool runs in your browser — your code and data are never sent anywhere.
Works on any device
Runs on Windows, Mac, Linux, iOS, and Android — nothing to install.
Instant results
No queues, no build step — results update as you type.
Built to handle real data
Full Unicode support and RFC-compliant parsing, edge cases included.
Free, always
Free to use, with no rate limits, sign-up, or trial period.
Frequently asked questions
Any invisible space or tab character that appears after the final visible character on a line.
Yes, it forces all line breaks to conform to the standard Unix (LF) format universally.
It can be configured to either preserve blank lines or aggressively collapse multiple empty lines into a single gap.
Leading spaces are left completely untouched to ensure Python or YAML structures don't break.
Standard behavior specifically targets standard space and tab characters, often ignoring obscure Unicode spacing.
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