Pull out the pages you need — a single page, a range, or several ranges — into a new PDF. 100% browser-side.
Use commas and dashes: "1-3, 5, 8-10" extracts pages 1 to 3, page 5, and pages 8 to 10 into one new PDF.
No. The original stays untouched — you download a new PDF containing only the extracted pages.
No. Splitting runs entirely in your browser with pdf-lib; the file never leaves your device.
Currently ranges produce a single output PDF. One-file-per-page export is on the roadmap.