Join Lines
Merge many lines of text into one line with the separator of your choice — a comma, space, tab or anything custom. Free, instant and private: everything runs in your browser.
How to use the Join Lines tool
- Paste your lines. Drop a column of items — one per line — into the box above. It could be a list copied from a spreadsheet, a CSV column, or a bullet list.
- Pick a separator. Choose comma, space, tab, pipe or a custom string to place between each item. Optionally trim whitespace, skip blank lines or remove duplicates.
- Copy the result. The single-line result updates instantly. Copy it to the clipboard or download it as a text file.
About this tool
Joining lines is one of those everyday text chores: you have a column of values — names, email addresses, IDs, tags — and you need them on one line separated by commas so you can paste them into a SQL IN (...) clause, a spreadsheet cell, a config file or a search box. This free line joiner does exactly that, and adds the extra touches that save time: trimming stray spaces, dropping empty rows, removing duplicate values, and wrapping every item in quotes or brackets with the prefix and suffix fields.
Everything happens locally in your browser using plain JavaScript, so your list is never uploaded, stored or logged. That makes it safe for pasting internal identifiers, customer emails or any other sensitive data. There is no size limit beyond your device's memory, so long lists join just as quickly as short ones.
Frequently asked questions
How do I turn a list into a comma-separated line?
Paste your list with one item per line and leave the separator on “Comma + space”. The result box immediately shows all items joined into a single comma-separated line, ready to copy.
Can I wrap each item in quotes?
Yes. Type a double quote in both the “Add before each item” and “Add after each item” fields. Combined with the comma separator you get "a", "b", "c" — perfect for SQL or code arrays.
How do I insert a tab or newline as the separator?
Choose “Tab” from the dropdown, or select “Custom…” and type \t for a tab or \n for a line break. The tool converts those escape sequences to real characters.
Does it remove duplicate entries?
Tick “Remove duplicate lines” and any repeated items are collapsed to a single occurrence, keeping the first one in its original order. Comparison happens after trimming, so “ apple ” and “apple” are treated as the same value.