Join Text
Merge lines of text together with a delimiter. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Join Text
- 1. Paste the lines you want to merge. Put each item on its own line in the input pane, whether that's a list of names copied from a spreadsheet column or output from a command that printed one value per row.
- 2. Set the Delimiter to join with. Type the character or string that should sit between each line, such as a comma and space for a readable list, or a pipe for a machine-readable record.
- 3. Toggle Skip blank lines and Trim whitespace. Turn on Skip blank lines to drop empty rows before joining, and Trim whitespace around lines to remove stray spaces so the merged result doesn't carry accidental padding from each line.
- 4. Copy the merged line. The output pane shows every line combined into a single string using your delimiter. Copy it into a spreadsheet cell, a config value, or wherever a flat list is expected.
When to use Join Text
Join Text is for turning a column of separate lines into one delimited string. It's the reverse of splitting: instead of breaking text apart, you're collapsing rows into a single value that a form field, API parameter, or database column can accept.
- Building a comma-separated tag list. You copied a column of tags out of a spreadsheet, one per line, but the CMS field wants a single comma-separated string. Joining with a comma and space produces exactly that in one step.
- Assembling a SQL IN clause. A list of IDs sits one per line from a query result. Joining with a comma turns them into the comma-separated values a SQL IN clause expects, ready to paste into your next query.
- Merging multi-line notes into one field. A ticket description was pasted across several lines but the tracker's summary field only accepts one line. Joining with a space collapses it while keeping every word intact.
- Cleaning stray blank lines before merging. An export left empty rows scattered between real entries. Turning on Skip blank lines removes those gaps so the final joined string doesn't end up with doubled delimiters.
Examples
Join lines with a comma
Input
apples bananas cherries
Output
apples, bananas, cherries
About the Join Text tool
Join Text runs as plain JavaScript in your browser tab, with no server behind it. Merge lines of text together with a delimiter. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's Text Tools section, 211 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
You can shape the output with 3 settings, including Delimiter, Skip blank lines and Trim whitespace around lines, and the result refreshes the moment you change one. A worked example further down the page shows exactly what the tool produces for a real input.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Is Join Text free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.