Join Lines
Merge multiple lines of text into a single line using a comma, space or custom delimiter. Trim each line and skip blanks. Runs 100% in your browser.
What is the Join Lines?
Join Lines merges every line of your text into one continuous string separated by a delimiter of your choice — a comma, a space, a pipe or any custom characters.
- Join with comma, space or any custom delimiter
- Trim whitespace from each line before joining
- Skip blank lines to avoid empty gaps
- Live preview and one-click copy
- Fully client-side — your text never leaves the browser
How to use the Join Lines
- 1
Paste your list into the input box, one item per line.
- 2
Choose a delimiter — comma, space, or type your own custom separator.
- 3
Optionally trim each line and skip blank lines for a cleaner result.
- 4
Copy or download the single joined line.
About the Join Lines
Join Lines merges every line of your text into one continuous string separated by a delimiter of your choice — a comma, a space, a pipe or any custom characters. It is the quickest way to turn a vertical list into a single-line, comma-separated value or a space-joined sentence.
It is handy for building CSV headers, SQL IN() clauses, tag lists, or joining wrapped text back together. Trim each line to remove stray spaces and skip blank lines so your output has no empty gaps.
All the merging happens locally in your browser. Nothing is uploaded, so your data stays private and the tool keeps working even when you are offline.
Frequently asked questions
How do I turn a list into a comma-separated line?
Paste your list, choose the comma delimiter, and every line is joined into one comma-separated string ready to copy.
Can I join lines with a custom separator?
Yes. Select the custom option and type any separator you need, such as a pipe, a semicolon or a space plus dash.
Will extra spaces be removed?
If you enable “Trim each line,” leading and trailing spaces are stripped from every line before it is joined.
Is my data uploaded to a server?
No. Joining happens entirely in your browser, so your text stays on your device and works offline.
Guides for Join Lines
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