How to use: Merge Lines
Merge Lines is a free online Text Tools tool that join all lines with a custom separator instantly in your browser. Paste your data, adjust the options and get the result in real time — no installation, no sign-up, and nothing is ever uploaded to a server.
How to use
Using Merge Lines takes three steps:
- Paste your data into the input box (or load the example).
- Configure the options to match your target format or scenario.
- Copy, download or inspect the output — it updates live as you type.
Description
Join all lines with a custom separator.
Because everything is computed client-side, Merge Lines is safe to use with sensitive data such as API keys, tokens or private logs.
Run
These ready-made examples show typical inputs and the exact output Merge Lines produces for them.
Examples
Join with ", ".
one two three
Use cases
Common situations where Merge Lines helps:
- Join all lines with a custom separator.
- Because everything is computed client-side, Merge Lines is safe to use with sensitive data such as API keys, tokens or private logs.
FAQ
What is Merge Lines?
Merge Lines join all lines with a custom separator. It runs entirely in your browser, so your data stays private.
Is Merge Lines free to use?
Yes. Merge Lines is free, unlimited and works without registration or installation.
Does my data get uploaded?
No. All processing happens locally in your browser; nothing is sent to any server.