Clean up the vertical whitespace in any text. Remove empty lines deletes every blank or whitespace-only line. Collapse blank lines keeps single separators but squeezes any run of consecutive blank lines down to one. Trim each line strips leading and trailing spaces and tabs from every line without changing the line count. Remove all line breaks joins everything into a single line, glued together with the separator you choose (a space by default, but you can use a comma, a pipe or leave it empty).
The before/after line counts show exactly how many lines each operation removed. Handy for tidying pasted text, flattening lists into a single line, or preparing content for CSV and search fields. Everything runs locally in your browser — your text never leaves your device.