How is this different from List Item Joiner?

List Item Joiner splits on one standard separator and joins with an arbitrary free-text glue string. This tool has two independent separator selectors (input and output), each a preset newline/comma/custom choice, and reparses the input before rejoining it.

Can the input and output separator be the same?

Yes, though that just round-trips the list unchanged (aside from comma's readable ", " spacing on rejoin), it's a valid way to reformat spacing around a comma-separated list.

What happens to blank items?

They're preserved. If your input has two separators in a row producing an empty item, that empty item stays in the output at the same position.

Does comma output always add a space after the comma?

Yes, choosing comma as the output separator joins items with ", " (comma plus space) for readability, matching how the shared separator helper behaves across this whole category.

List Separator Changer - Convert Between Newline, Comma & Custom Delimiters

Overview

Introduction

A list you have is often delimited differently from the list a downstream tool expects, one-per-line versus comma-separated being the most common mismatch.

This tool bridges that gap: pick how your input is currently separated, pick how you want the output separated, and it reparses and rejoins in one step.

What Is List Separator Changer?

A converter with two independent separator controls, one for parsing the input, one for producing the output, rather than the single shared separator control used elsewhere in this category.

It's the most direct way to turn a newline list into a comma list, a comma list into a pipe-delimited list, or any other combination.

How List Separator Changer Works

The input is split into items using the input separator setting (newline, comma, or a custom delimiter).

Those items are then rejoined using the output separator setting, which can be a different kind of delimiter entirely.

When To Use List Separator Changer

Use it whenever you've copied a list in one format but need it pasted somewhere expecting a different delimiter.

It's a quick way to turn a vertical one-per-line list into a single horizontal comma- or semicolon-separated line, or vice versa.

Often used alongside List Separator Remover, List Separator Normalizer and List Item Joiner.

Features

Advantages

Two independent separator selectors make any newline/comma/custom combination possible in one step.
Preserves exact item order and count, including blank items from repeated separators.
No manual find-and-replace needed to swap delimiters.

Limitations

Only supports one delimiter kind on each side at a time; it can't parse input that mixes several separator styles inconsistently (use List Separator Normalizer for that).
A custom delimiter that itself appears inside item text will cause that item to be split incorrectly, since the tool can't distinguish delimiter occurrences from data occurrences.

Examples

Newline list to comma list

Input

apples
bananas
cherries

Output

apples, bananas, cherries

Input separator is newline, output separator is comma; the three lines become one comma-and-space-joined line.

Comma list to a custom pipe delimiter

Input

id,name,email

Output

id | name | email

Input separator is comma, output separator is custom (" | "); the comma-split items are rejoined with the pipe delimiter.

Best Practices & Notes

Best Practices

Double-check the input separator matches your actual data before converting, a wrong guess silently produces one giant item instead of an error.
Use List Separator Normalizer instead if your input separator isn't consistent throughout the list.

Developer Notes

Delegates directly to the shared `splitListItems(input, inputSeparator, inputCustomSeparator)` and `joinListItems(items, outputSeparator, outputCustomSeparator)` helpers with two separate `ListSeparator` values, rather than the single shared separator most tools in this category use.

List Separator Changer Use Cases

Converting a one-per-line list into a comma-separated value string for a config file
Turning a comma-separated tag list into a newline list for pasting into a text area that expects one entry per line
Reformatting a delimiter to match what a downstream API or spreadsheet import expects

Common Mistakes

Setting the input separator to the wrong kind, which merges the whole list into a single item instead of splitting it.
Expecting mixed-separator input to be handled automatically; use List Separator Normalizer for that case instead.

Tips

If you just need to remove separators entirely rather than swap them, use List Separator Remover instead.
Chain with List Item Prefix Adder afterward if you also need to label each item after reformatting.

List Separator Changer