Quick answer: open Toolzio's free Split PDF tool, drop in your file, and choose a mode — custom ranges (e.g. 1-3; 5; 8-10) to make several files, or one PDF per page to separate every page into its own file. Everything runs in your browser: no uploads, no account, and quality stays identical because pages are copied, not re-rendered.

Split a PDF step by step

  1. Open the Split PDF tool in your browser and drop your PDF onto the workspace.
  2. Choose a mode: Custom ranges to split by page ranges, or One PDF per page (ZIP) to turn every page into its own file.
  3. In Custom ranges mode, type your ranges — e.g. 1-3; 5; 8-10. Each group separated by a semicolon becomes a separate output file.
  4. Click Split PDF. If you produced more than one file, they download together as a ZIP; a single output downloads as one PDF.
  5. Open the results and spot-check them before sending — splitting is lossless, so what you see is exactly what was in the original.

Splitting vs extracting: two different jobs

People mix these up, so decide which job you actually have. Splitting breaks one PDF into several files — for example, a 40-page scan becomes 40 single-page files, or pages 1-3, 5, and 8-10 become three separate documents. Extracting pulls a few chosen pages into one new file. If you want pages 4–7 of a long report as a single document to email, extraction is the cleaner job — see our guide on how to extract pages from a PDF. And if you want the same document minus a few pages, see our guide on how to delete pages from a PDF.

The range syntax, explained

Custom ranges mode takes a simple syntax. Each item is a single page or a hyphenated range, and a semicolon starts a new output file:

  • 5 → one file containing page 5.
  • 1-3 → one file containing pages 1, 2, and 3.
  • 1-3; 7 → two files: one with pages 1–3, one with page 7.
  • 1-3; 5; 8-10 → three files, downloaded together as a ZIP.
  • A typo or a range beyond the file's page count shows a readable error, not a broken file.

Does splitting change quality?

No. Splitting copies the selected pages into new files without re-rendering or recompressing them, so everything looks identical to the original: text stays selectable, images stay sharp, and vector graphics stay crisp. The reverse workflow is also lossless — if you ever need to recombine the pieces, merging PDF files copies pages back without quality loss either.

Common mistakes

  • Trusting the printed page numbers. Numbers printed on the page don't always match the PDF's real page count — a cover page or blank pages can shift things by one or more. Check which actual page position you need before typing ranges.
  • Using an encrypted file. Password-protected PDFs must be unlocked first; the tool shows a clear error instead of failing silently.
  • Splitting when you meant to extract. If your output is one file, you probably wanted the Extract Pages tool, not the splitter.
  • Needing pages reordered, not just separated. A splitter can't reach inside a file to reorder or delete pages. Do that first with the Organize PDF tool — see our guide on how to change the order of pages in a PDF — then split the cleaned file.

What the splitter won't do

This splitter works by page numbers and page counts — it can't split by file size, by bookmarks, or by text content. It also can't edit what's on a page; for overlay edits, see the Edit PDF tool and our guide on how to add text to a PDF. And remember that very large documents are limited by your device's memory, not by a plan — for hundreds of pages, split in smaller batches and the results stay exactly as sharp as the original. Sideways pages, though, are a rotation problem, not a split problem — see our guide on how to rotate PDF pages and keep them upright. Adobe’s guide to splitting PDFs in Acrobat covers the same job in the desktop app, including splitting by file size or bookmarks.