Why does pasted text have invisible double line breaks?

Text copied from PDFs, emails, or Windows apps often uses CRLF, where each break is a carriage return plus a line feed. A naive find-and-replace that only targets one of the two leaves a stray character behind. This tool normalizes CRLF to a single newline first, so you get one clean break per line.

How big a block of text can I clean at once?

There is no character limit beyond your browser memory. Paste lists, code, or multi-page documents and the line breaks are stripped instantly, with live before-and-after character and line-break counts.

Remove Line Breaks From Text Online

Q: What is the difference between the three strip modes?

Replace with a space swaps every line break for one space so text flows as a single block. Remove entirely deletes breaks and joins lines with nothing. Keep paragraph breaks collapses single newlines to a space but preserves blank-line gaps between paragraphs.

Q: Does it handle Windows, Mac, and Unix line endings?

Yes. The tool normalizes every convention first: Windows CRLF (\r\n), Unix LF (\n), and classic Mac CR (\r) all collapse to a single newline before stripping, so mixed-source text cleans up consistently with no leftover blank lines.

Q: Can I also remove the extra spaces left behind?

Yes. Turn on "Collapse multiple spaces into one" to squash runs of spaces or tabs into a single space, which is common after joining lines that were already indented. Add "Trim" to remove whitespace from the start and end of the result.

Paste text and strip every line break instantly. Replace breaks with a space, join lines with nothing, or keep paragraph splits — it normalizes Windows, Unix, and Mac line endings, runs 100% in your browser, and is free.

Input Text

0 chars · 0 line breaks

What to do with line breaksReplace with a spaceSwap every line break for a single space so text flows as one blockRemove entirely (join)Delete every line break and join lines directly with no separatorKeep paragraph breaksCollapse single line breaks to a space but preserve blank-line paragraph splits

Collapse multiple spaces into oneTurn runs of two or more spaces into a single spaceTrim leading & trailing whitespaceRemove whitespace from the start and end of the result

Result

0 chars0 line breaks

Before

chars · 0 breaks

After

chars · 0 breaks

Features

Three Strip Modes

Replace breaks with a space, remove them entirely, or keep blank-line paragraph splits

Normalizes Every Line Ending

Handles Windows CRLF, Unix LF, and classic Mac CR so mixed sources clean up the same

Live Output

The cleaned text updates the instant you type, paste, or change an option

Collapse Spaces & Trim

Optionally squash runs of spaces into one and trim leading or trailing whitespace

Before & After Counts

See character and line-break totals for both the input and the result side by side

Private & Free

All processing runs locally in your browser with no uploads and no signup

Runs 100% in your browser

Normalizes CRLF, LF & CR, no uploads

Remove Line Breaks: strip newlines, join lines, or keep paragraphs

A remove line breaks tool deletes the newline characters that split text across lines. Paste any text, pick a mode — replace each break with a space, remove breaks entirely, or keep blank-line paragraph breaks — and copy the clean result. It normalizes Windows, Unix, and Mac line endings, runs 100% in your browser, and is free with no signup.

How to remove line breaks from text

Paste or type your text into the Input box, or hit the paste icon to pull from your clipboard.
Pick a mode: Replace with a space (the default) for flowing text, Remove entirely to join lines with nothing, or Keep paragraph breaks to preserve blank-line gaps.
Optionally tick Collapse multiple spaces and Trim to tidy the spacing left behind after joining lines.
The cleaned text appears in the Result panel instantly, with live before-and-after character and line-break counts.
Click Copy to send the result to your clipboard. The original input stays put so you can try another mode.

How line breaks actually work

A line break is not one universal character. Three conventions are still in active use: Unix and macOS use a single line feed, LF (\n, byte 0x0A); Windows uses a carriage return followed by a line feed, CRLF (\r\n); and classic Mac OS (pre-OS X) used a lone carriage return, CR (\r, byte 0x0D). Text copied from PDFs, emails, and Windows apps frequently carries CRLF, which is why a one-character find-and-replace so often leaves a stray symbol or a half-removed break behind.

This tool fixes that by normalizing first: it converts every \r\n and lone \r to a single \n before doing anything else, so all three conventions behave identically. Per the W3C's internationalization guidance and the ECMAScript line-terminator rules, an application should treat CR, LF, and the CRLF pair as equivalent line boundaries — exactly the normalization step this tool applies.

"The characters CR (U+000D), LF (U+000A), and the sequence CR LF are all treated as a single line terminator."— ECMAScript Language Specification, Line Terminators

Worked examples: input → output

"line one ↵ line two" · replace with a space

line one line two

A hyphenated word split "data↵base" · remove entirely

database

Two paragraphs separated by a blank line · keep paragraph breaks

First paragraph joined into one line.

Second paragraph joined into one line.

Edge case · mixed CRLF + lone CR

Paste text where one break is Windows \r\n and the next is an old-Mac \r, and a plain \n replace would leave a dangling carriage return on every Windows line and miss the Mac break entirely. This tool normalizes both to \n first, so a single space (or nothing) replaces each break with no leftover invisible characters.

Line-ending reference: which platform uses what

These are the newline conventions the tool normalizes before stripping. Knowing which one your source uses explains why a naive replace often leaves blank lines or stray characters.

Name	Escape	Bytes	Used by
LF (Line Feed)	\n	0x0A	Linux, macOS, Unix, web, JSON
CRLF	\r\n	0x0D 0x0A	Windows, HTTP headers, SMTP email, CSV
CR (Carriage Return)	\r	0x0D	Classic Mac OS (pre-OS X), some legacy apps
LS / PS	U+2028 / U+2029	Unicode	Line & paragraph separators in some editors

The hidden carriage return that breaks copy-paste

The single most common line-break bug is invisible: a Windows CRLF looks like one line break but is two characters. Replace only \n with a space and you leave a stray \r on every line — which shows up as a phantom space, a box glyph, or a broken match in code, search boxes, and spreadsheets. That is why this tool always normalizes \r\n and lone \r to \n before it strips anything.

The Keep paragraph breaks mode is smarter than a blanket replace, too: it splits on a run of blank lines first, joins single newlines inside each paragraph to a space, then re-joins the paragraphs with one blank line. So a document with hard-wrapped lines becomes clean flowing paragraphs — ideal for reflowing PDF or email text without merging everything into a single wall of words.

Runs 100% in your browser

Your text never leaves your device. Every break is stripped locally in JavaScript and copying uses your browser's native clipboard — no uploads, nothing leaves your device. I tested all three modes against tricky inputs: mixed CRLF and lone \r, PDF text with hard-wrapped lines, indented code with tab runs, and documents separated by multiple blank lines. Normalization held up and the before/after counts stayed accurate, with the result instant on multi-page paste.

Frequently asked questions

Is this remove line breaks tool free?

Yes. The tool is 100% free with no signup and no usage cap. The cleaned text is yours to use in personal and commercial work.

Does my text get uploaded anywhere?

No. Every line break is stripped in your browser with JavaScript, so nothing is sent to a server. The tool works offline once the page loads.

What is the difference between the three strip modes?

Replace with a space swaps each break for one space. Remove entirely joins lines with nothing. Keep paragraph breaks collapses single newlines to a space but preserves blank-line gaps between paragraphs.

Does it handle Windows, Mac, and Unix line endings?

Yes. It normalizes Windows CRLF, Unix LF, and classic Mac CR to a single newline first, so mixed-source text cleans up consistently with no leftover blank lines or stray characters.

Can I also remove the extra spaces left behind?

Yes. Turn on Collapse multiple spaces into one to squash runs of spaces or tabs, then add Trim to clean the start and end. Pair it with our find and replace tool for finer control.