Line Break Converter
Convert line endings between LF, CRLF, CR — plus escape to literal \\n, unescape, and HTML <br>, with final-newline control. Live.
About this ToolHow it works, benefits & use casesTap to collapse
Line endings cause more trouble than they should — a file authored on Windows (CRLF) breaks a shell script on Linux (LF), and a stray classic-Mac CR throws off a diff. This converter normalizes line breaks between LF (\n), CRLF (\r\n), and CR (\r), and goes further: it can escape real breaks into the literal two-character \n for embedding in JSON or single-line config values, unescape literal \n back into real breaks, or turn breaks into HTML <br> tags. As you type it detects the current ending, flags when a file has mixed endings, and tells you whether the text ends with a final newline. A final-newline control lets you keep, add, or remove the trailing newline. Conversion happens live in the browser, the input state is captured in a shareable URL, and your text is never uploaded.
How to Use
- 1Paste your text into the input panel, or click "Load example" to try mixed line endings.
- 2Read the detection strip: it names the current ending, warns if endings are mixed, and shows whether the text ends with a newline.
- 3Choose a target from "Convert to" — LF, CRLF, CR, escaped \n, unescaped, or HTML <br> — or use the quick "To Unix" / "To Windows" buttons.
- 4For LF/CRLF/CR/unescape targets, set the "Final newline" option to keep, add, or remove the trailing newline.
- 5Click Convert, then copy or download the result, or share the URL to hand the exact input to someone else.
Key Benefits
- Converts between LF, CRLF, and CR by normalizing first, so any mix of endings is handled cleanly
- Escape to literal \n for JSON / CSV / single-line configs, plus the inverse unescape
- Render line breaks as HTML <br> tags in one step
- Live detection of the current ending, with a clear "mixed line endings" warning
- Shows whether the text has a final newline and lets you keep, add, or remove it
- Per-ending counts (total breaks, LF, CRLF, CR) update as you edit
- Shareable URL captures the input and settings; everything runs in your browser
Common Use Cases
- Fixing CRLF/LF mismatches before committing files to a Git repository
- Normalizing a config or script that was edited across Windows and Linux machines
- Escaping a multi-line snippet into a single \n-delimited string for JSON or an env var
- Converting plain text into <br>-separated HTML for an email or template
- Adding or stripping a trailing newline to satisfy a linter or POSIX file expectation
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Six targets: LF (\n) for Unix, Linux, and modern macOS; CRLF (\r\n) for Windows; CR (\r) for classic Mac OS; "escaped" which turns real breaks into the literal two characters \n; "unescaped" which turns literal \n / \r\n / \r back into real breaks; and "br" which replaces breaks with HTML <br> tags.
Every conversion first normalizes all endings to LF, then applies the target style, so a file mixing CRLF, LF, and CR converts consistently with no leftover stray characters. The detection strip also shows a "Mixed line endings" badge so you know before you convert.