Nothing is uploaded. When you drop or pick a PDF, the tool reads it locally with the browser’s File API, renders the page thumbnails in memory with the pdf.js engine (whose worker is bundled locally, not fetched from a CDN) and produces the split files with the pdf-lib library — page extraction runs inside a Web Worker on your own machine. There is no server, upload, database, API or tracking in the processing path, so contracts, statements, scans and private documents stay on your device; the tool works offline once cached, and closing the tab discards everything. The only optional network use anywhere on the site is consent-gated advertising, which never sees your files.

The three modes answer three different needs. Choose Range when you want to break a document into separate files — each comma-separated part such as 1-5, 6-10, 11-15 becomes its own PDF, and they are handed back together in a ZIP. Choose Pages when you only need certain pages kept together — type or click a mix like 1-3, 5, 7-9 and the tool extracts exactly those into a single new PDF. Choose Size when a file is too big for an email or portal — pick a ceiling (100 KB, 200 KB, 500 KB, 1–25 MB, or a custom value) and the tool packs pages into as many parts as needed so each one lands under the limit. Quick-pick buttons (First page, Last page, First/Second half, Odd, Even, Split All Pages) fill the range box for you.

Splitting does not re-encode or re-render your pages, so there is no quality loss: pdf-lib copies each source page’s content, fonts, images and vector graphics verbatim into the new file, which means text remains selectable and searchable and the layout is identical to the original. The one exception is Size mode used on an already-small file — if the whole PDF is already under the limit the tool tells you no split is needed rather than shrinking it. Note that splitting divides pages; it does not itself compress a file, so to make pages physically smaller use a Compress PDF tool. For the page content, what you put in is exactly what each split file gives back.

To burst a document into individual pages, click the Split All Pages quick pick: the tool creates one PDF for every page and bundles them into a single ZIP. To keep just one page, select Pages mode and enter a single number, use the First page or Last page quick pick, or click that page’s thumbnail in the preview grid and choose “Extract selected”. The thumbnail grid also lets you tick several non-adjacent pages at once and pull them into one combined PDF, and any result — one part, several parts or a single extraction — can be downloaded on its own or as a ZIP made locally in your browser.