Join Lines
Merge every line of a list into a single line in seconds. Paste a column of items, pick a separator — space or comma — and this free join-lines tool combines them into one clean line, ready to copy, privately in your browser.
What does join lines do?
Join lines takes a list of separate lines and combines them into a single line, joined by a separator you choose. It trims each line, drops any blank lines, and then links the remaining items with a space or a comma. This turns a vertical list such as names, keywords, email addresses or product codes into one horizontal string you can paste anywhere.
It is the inverse of a line splitter, and it's essential for cleaning up copied data. Whether you're turning a column of addresses into a comma-separated list for a spreadsheet, converting a list into a single search string, or flattening a column of words into one sentence, joining keeps the order intact and removes the empty rows that would otherwise create gaps.
The tool runs entirely in your browser, so your text is processed locally and never uploaded.
How to use join lines
- Paste your list of lines into the input box.
- Choose the separator — a space or a comma.
- Click Join to combine them into one line, then copy the result.
Example
Paste the lines 'apple', 'banana', 'cherry' (one per row) and choose a comma separator. The tool outputs 'apple, banana, cherry' and reports '3 line(s) joined into one line.' Choose space instead and you get 'apple banana cherry'.
Common use cases
- Flattening a column of keywords into a comma-separated search string.
- Combining names, emails or product codes into one list.
- Turning a vertical address list into a single line for a spreadsheet.
- Merging lines of text into one sentence for a document or message.
Pro tips
- Blank lines are dropped automatically, so the output has no gaps.
- Choose comma to build a list for a spreadsheet; space for a single sentence.
- This tool joins, not sorts — your items keep their original order.
- Run it alongside a duplicate-line remover if your list has repeats.
FAQ
What does join lines do?
It merges several separate lines into a single line, joined by a space or comma, while dropping blank lines.
Which separators can I use?
You can choose a space or a comma. The comma produces a list like 'apple, banana, cherry'; space produces one continuous string.
Is it private?
Yes. Your text is processed in your browser and nothing you paste is uploaded or stored.
What happens to blank lines?
Blank lines are removed, so you don't end up with double separators or gaps in the joined result.
Are the joined items trimmed?
Yes. Each line is trimmed of leading and trailing whitespace before being joined.
Can I use it for a CSV?
Choosing the comma separator gives a comma-separated single line, useful for pasting into a spreadsheet cell.
Does it change the order?
No. Items are joined in the same order you pasted them.
Is it free?
Yes, it is free, with no signup and no limits, and it runs entirely in your browser.
Related searches
join lines, merge lines into one, combine lines online, line joiner, merge text lines, join text, add line separator, combine text into one line, join lines with comma, merge list into one line
Related tools
- Duplicate Line RemoverFree duplicate line remover. Paste a list, remove duplicate lines, keep order, ignore case, trim, sort and liv…
- Find and Replace TextFree find and replace tool. Search and replace text instantly in your browser, with case-sensitive and regex m…
- Add Line Numbers OnlineAdd line numbers to text online for free. Prepend 1, 2, 3 and more to each line instantly and privately in you…
- Split Text by Delimiter OnlineSplit text by a delimiter into separate lines online for free. Use comma, semicolon, pipe or any separator — p…
- Remove Empty Lines OnlineRemove empty lines from text online for free. Delete blank and whitespace-only lines instantly and privately i…