Text Splitter & Joiner

Got a long comma-separated list of tags, e-mails, or IDs that you need as one item per line? Or the opposite — a column of values from a spreadsheet that has to become a single comma-separated string for a config file or an SQL IN clause? Reshaping such text by hand or with editor macros is tedious and easy to get wrong.

This tool converts between delimited text and lines in one click, and everything stays on your device: the text is processed by your browser only, so private lists never reach a server. Paste the text, pick the direction — split into lines or join lines into one string — and copy the result.

The delimiter is fully yours: a comma, a semicolon, a pipe, or any phrase, plus escape sequences for characters you cannot type directly — \t for a tab, \n for a newline, \s for a single space. Two cleanup switches trim whitespace around every item and drop empty items, so stray spaces and double delimiters do not pollute the output.

After processing you see a short summary of how many items were produced, and the result sits in a copy-ready output box — paste it straight into your spreadsheet, code, or CSV file.