Change List Separator

No. The tool runs entirely in your browser. Your list never leaves the device – there is no fetch, no XHR, no analytics on your content.

It counts how often each structural separator (newline, comma, semicolon, tab, pipe) appears in the first 4 KB of your list and picks the most frequent. Space is only used as a fallback when none of the others appear.

Yes – set the current separator to Comma (or leave it on Auto-detect) and the new separator to Newline. Turn on “Remove empty items” if your CSV has trailing commas.

Auto-detect picks the most common structural separator, so mixed lists snap to the dominant one. For precision, set the current separator manually and run the tool once for each delimiter.

No. Trim only strips whitespace at the start and end of each item. Spaces inside a value (like New York) stay intact.

Not yet – the dropdowns cover the six most common ones (newline, comma, semicolon, tab, pipe, space). Paste your list, then do a second pass with another text tool if you need something exotic.

The safety cap is 100 000 items per conversion so a bad paste cannot freeze your tab. That is far beyond typical needs and converts in well under 100 ms on a modern laptop.

Yes. Select a column or row in a spreadsheet, paste it here, and auto-detect will pick Tab. From there you can convert to commas, pipes, or any other format.

The conversion becomes a pass-through but trim and remove-empty still apply. The stats line flags the match so you notice it.

Once the page is loaded, yes. All three JavaScript files and the CSS are self-contained, so you can keep working on a flight or a spotty connection.