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Change List Separator

Details

How to use Change List Separator

What the tool does, how to run it, and what to expect from the result.

How to switch a list between lines and commas

Paste the list into the input box. If it has line breaks, it comes back as one comma-separated line. If it has no line breaks, it is split on its commas into one item per line.

The direction is inferred, not chosen, so the one thing to watch is a trailing newline on a comma list. It makes the tool see a multi-line input and join rather than split. Delete it and the conversion goes the way you meant.

  • Paste the list into the input box.
  • If you pasted a comma list and nothing split, delete the trailing line break at the end of the box.
  • Read the converted list in the output panel.
  • Check for items that contained a comma of their own, as those will have been split apart.
  • Press Copy result to take the converted list away.
Tips

Getting a better result out of Change List Separator

Specific settings and thresholds, not general advice.

  • The direction is decided by your input: if it contains a line break, the lines are joined with a comma and a space. If it contains no line break at all, it is split on commas into one item per line.
  • That test is the trap. A comma-separated list that arrives with a trailing newline, which is what a copy out of a text file or a code editor usually gives you, contains a line break, so it takes the first branch and comes back with its internal commas untouched. Delete the trailing line break and it will split as you expect.
  • For the same reason, a multi-line block where some lines already contain commas will be joined, and those commas will be indistinguishable from the ones the tool added.
  • Items are trimmed and empty entries are dropped in both directions, so a copy with ragged spacing comes back clean.
  • Only two separators are understood: the line break and the comma. Semicolons, tabs, and pipes are ordinary characters and stay inside the item.
Limits

What Change List Separator does not do

The honest boundary, so you do not lose time finding it yourself.

  • It supports only line breaks and commas, no semicolon, tab, or pipe.
  • The direction cannot be forced, it is inferred from whether a line break is present.
  • It does no quoting, so items containing commas are not round-trip safe.
  • It cannot split on a comma and a line break at the same time, so a mixed list has to be normalised first.
At a glance

Who Change List Separator is for

A quick way to understand who this helps, what it solves, and where it connects next.

Best fit

Writers, students, editors, marketers, and developers working with text.

Ideal for

Quick, private text work without installing an app or trusting a server with your content.

FAQ

Common questions

Short answers for the questions people usually have before trying a utility like this.

Does my data get uploaded anywhere?

No. Everything runs locally in your browser and nothing is sent to a server.

Is this free to use?

Yes. It is completely free, with no account, no signup, and no usage limits.

Does it work on a phone?

Yes. The page runs in any modern mobile browser, on iPhone and Android alike, with no app to install.

I pasted a comma list and it did not split. Why?

Your paste contained a line break, almost certainly a trailing one at the end. The tool checks for any line break, finds it, and switches to the join direction instead. Put the cursor at the end of the input box and delete the trailing newline, and the list will split.

Can I choose the direction myself?

No, it is inferred from the input. The only lever you have is whether a line break is present, so removing the trailing newline is how you force the split direction.

Is the conversion reversible?

Only if none of your items contains a comma. Nothing is quoted, so an item like "Smith, John" turns into two items when the comma list is split back into lines, and the original item cannot be recovered.

Can I convert to semicolons or tabs instead?

Not in this tool. Convert to a comma list here, then use find and replace in your editor to swap the comma for the character you need.

What happens to blank lines and stray spaces?

They are cleaned up in both directions. Items are trimmed and empty entries are dropped, so the output is a tidy list either way.

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