Is there a file size limit?

No practical limit for most operations.

Results are generated using standard algorithms for maximum accuracy.

fast

Add Line Numbers — fast

Add line numbers to text or code.

Input

Start number

Separator

Type, paste, or upload your content.

Result appears instantly in your browser.

Copy the result or download your file.

Sort lines A-Z, Z-A, by length, or randomly.

Remove duplicate lines from text instantly. Keep unique lines, sort, and clean up lists easily.

Count words, characters, sentences, paragraphs, and estimate reading time in real-time as you type.