Join Lines With Comma
Join Lines With Comma uses the shared line splitter and joins all line strings—including empty lines—with ', ' from the tool configuration. It does not trim lines, quote commas already inside values, skip blanks, parse CSV, escape text, or append a final delimiter. Despite the fixed page name, the engine uses a separator field/config path but this public page's default is comma plus space.
Runs locally — files stay on your deviceAre lines containing commas quoted?
No.
Joining text lines does not create reliable CSV
A delimited data format needs escaping for values that contain its delimiter, quotes, or line breaks.
How it works
CRLF becomes LF, split creates lines, and Array.join uses ', '.
Key concepts
Blank lines become empty items
They create adjacent separators.
Literal content retained
Existing commas and edge spaces remain.
When to use it
- Combine a clean one-item-per-line list.
- Create a casual comma-space phrase.
- Prepare simple values known not to contain commas.
When not to use it
- Do not use for CSV without quoting.
- Do not expect blank lines skipped.
- Do not expect line trimming.
Worked examples
Simple
- Input
a\nb\nc- Expected output
a, b, c
Default separator.
Blank
- Input
a\n\nb- Expected output
a, , b
Empty item retained.
Comma value
- Input
a,b\nc- Expected output
a,b, c
Ambiguous output.
Common mistakes
Calling output CSV
No quoting. Correction: Use a CSV serializer.
Ignoring blanks
They produce empty entries. Correction: Remove empty lines first.
Expecting trim
Line spaces remain. Correction: Trim first.
Best practices
- Clean/validate each item.
- Remove blanks intentionally.
- Use a format-aware serializer for data exchange.
Related operations and differences
Remove Line Breaks
Choose Remove Line Breaks when you need to join multiline text into one line.; use Join Lines With Comma specifically for join lines.
Add Prefix to Every Line
Choose Add Prefix to Every Line when you need to add the same prefix before every line.; use Join Lines With Comma specifically for join lines.
Add Suffix to Every Line
Choose Add Suffix to Every Line when you need to add the same suffix after every line.; use Join Lines With Comma specifically for join lines.
Capitalize Every Word
Choose Capitalize Every Word when you need to capitalize the first character of every word.; use Join Lines With Comma specifically for join lines.
Character Counter
Choose Character Counter when you need to count Unicode characters in text.; use Join Lines With Comma specifically for join lines.
Extract Email Addresses
Choose Extract Email Addresses when you need to find unique email addresses in text.; use Join Lines With Comma specifically for join lines.
Limitations and privacy
- Literal comma-space join of all lines; no quoting, escaping, trimming, blank filtering, CSV semantics, custom UI choice, or final delimiter.
Text is transformed locally in this browser and is not uploaded by the tool.
Frequently asked questions
What separator is used?
Comma followed by a space.
Are blanks skipped?
No.
Are values quoted?
No.
Is a trailing comma added?
No.