Free Online Tool
Merge Lines
Merge multiple lines into a single line with a separator you choose.
Merge Lines lets you merge multiple lines into a single line with a separator you choose. Paste your text below and the result appears immediately — no waiting, no upload, and nothing saved anywhere.
How to use Merge Lines
- Paste your original text into the input box.
- Set a separator if you don't want lines joined with a space.
- Review the result as it updates.
- Copy the result, or download it as a .txt file.
- Use Clear to start over with new text.
Key features
- Processes your input directly in your browser, with nothing uploaded.
- 100% private — your text stays in your browser.
- Free to use, with no sign-up and no daily limit.
- Handles both short snippets and long documents well.
Questions
Frequently asked questions
Is Merge Lines free to use?
Yes — Merge Lines is completely free, with no sign-up, no trial period, and no hidden limits.
Is my text uploaded anywhere when I use Merge Lines?
No. Merge Lines runs entirely in your browser using JavaScript. Your text is processed on your own device and is never sent to a server.
Can I use Merge Lines on my phone?
Yes. Merge Lines works in any modern browser, including on mobile devices, with no app to install.
Is there a limit to how much text I can use?
There's no artificial limit. Because everything runs in your browser rather than on a server, Merge Lines can generally handle as much text as your device can comfortably process.
Keep going
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