PDF Splitter

Include a "Preview Page Thumbnails before processing selection" interface grid.

Note on errors: the most common slip-up here is a weak character set or a length that's too short to resist a brute-force attempt. If that happens, double-check your input rather than the tool — the calculation itself runs the same way every time.

Your data stays private. Everything you type runs locally in your own browser tab. Nothing is uploaded, logged, or stored on a server — close the tab and it's gone.

This tool processes everything client-side, inside your browser window, using a simple running array held in memory for the length of your session. Pdf-lib scripts processing file arrays entirely inside local browsers Nothing is sent to a server, so there's no upload delay and no privacy trade-off.