ToolCenterLabToolCenterLab
HomeAll Tools

Popular Tools

Compress PDFMerge PDFJPG to PDFBackground RemoverImage Resizer & CompressorPassword GeneratorQR Code GeneratorJSON Formatter & Validator
ToolCenterLabToolCenterLab

Free browser-based tools for developers, designers, students, and everyone. No signup, no uploads.

Categories

  • Text Tools(11)
  • Converters(15)
  • PDF Tools(8)
  • Generators(11)
  • Calculators(10)
  • Developer Tools(18)
  • Image Tools(15)
  • SEO Tools(8)

Tools For

  • Developers
  • Students
  • Designers
  • Writers & Marketers

Company

  • About
  • All Tools
  • Use Case Guides
  • Privacy Policy
  • Terms of Service
96 free tools · 100% client-side · No data collected
Privacy·Terms·

© 2026 ToolCenterLab. All tools run locally in your browser.

HomeText ToolsRemove Line Breaks

Remove Line Breaks — Join Lines Online

Remove line breaks and join text lines with a custom separator like commas or spaces.

Related Tools

Character Counter

Real-time character count with platform targeting, trim-to-limit, and social media indicators.

Duplicate Line Remover

Remove duplicate lines from text instantly with optional alphabetical sorting.

Lorem Ipsum Generator

Generate placeholder text by paragraphs, sentences, or words with configurable options.

Remove Extra Spaces

Strip extra whitespace from text, leaving single spaces between words.

How to Use

  1. 1Paste text with line breaks into the input area.
  2. 2Set a custom separator in the 'Join with' field (default is a space).
  3. 3Click 'Remove Line Breaks' to merge all lines into one.
  4. 4Review the single-line output below.
  5. 5Click Copy to save the result to your clipboard.

About Remove Line Breaks

The Remove Line Breaks tool joins multiple lines into a single line using any separator you choose — space, comma, semicolon, pipe, or custom text. Empty lines are filtered out automatically so you do not get double separators.

Common use cases include converting vertical lists into comma-separated strings, cleaning text pasted from PDFs and emails, joining SQL values, merging log lines, and preparing data for CSV fields.

The separator field accepts any string — single characters like `,`, `;`, or `|`, multi-character sequences like `, ` (comma-space) or ` → `, or even nothing (empty string) to concatenate lines with no gap. This makes it straightforward to build SQL IN clauses (`'val1', 'val2', 'val3'`), join Markdown list items into inline text, or format comma-delimited API parameters. All processing runs locally — your text never leaves your browser.

Frequently Asked Questions

Can I use a comma as the separator?

Yes. Type any character or string into the 'Join with' field — comma, semicolon, pipe (|), tab, or even a multi-character phrase.

Are empty lines removed?

Yes. Blank lines are filtered out before joining so you do not get double separators or extra spacing in the output.

Can I convert a list into a comma-separated string?

Yes. Paste your list (one item per line), set the separator to ', ' (comma-space), and click Remove Line Breaks. You get a clean CSV-style string.

Does it preserve spaces within lines?

Yes. Only line break characters are removed. Spaces and other whitespace within each line remain exactly as they are.

Is my text sent to any server?

No. All processing happens locally in your browser. Your text never leaves your device.

Explore Other Categories

Converters(15)PDF Tools(8)Generators(11)Calculators(10)Developer Tools(18)Image Tools(15)SEO Tools(8)

Related Tools

Character Counter

Real-time character count with platform targeting, trim-to-limit, and social media indicators.

Duplicate Line Remover

Remove duplicate lines from text instantly with optional alphabetical sorting.

Lorem Ipsum Generator

Generate placeholder text by paragraphs, sentences, or words with configurable options.

Remove Extra Spaces

Strip extra whitespace from text, leaving single spaces between words.