Introducing Groups: Split a PDF Into Many Files in One Pass

We've just shipped a feature we've wanted for a long time: Groups in the Split PDF tool. It changes splitting from a one-file-at-a-time chore into a single, visual pass — mark which pages belong to which document, and export them all at once.

The problem Groups solves

Until now, splitting a PDF into several documents meant repeating yourself. Extract pages 1–5, download. Go back, extract 6–12, download. Again for 13–20. If a packet needed to become six files, that was six trips through the tool — and six chances to lose track of which pages you'd already done.

That's fine for pulling out one section. It's tedious the moment you're breaking a single document into many.

How Groups works

Now, when you open Split PDF, the pages become a canvas you paint onto:

• Color-coded groups. Each group has its own colour. Click pages to add them to the active group; they light up in that colour on the thumbnails. Add as many groups as you need — one per document you want out.
• Name them, and they name your files. Every group has an editable name, and each group exports as a PDF named after it — call them "Contract," "Appendix," and "Receipts" and you download Contract.pdf, Appendix.pdf, and Receipts.pdf.
• Commas make groups. Prefer typing? Enter 1-10, 11-25, 26-40 in the range box and each comma-separated part becomes its own group — one line turns a report into three documents.
• One export, many files. With two or more groups the button becomes Split into groups, and you get one PDF per group in a single step.

A nice touch: a page can live in more than one group, so a shared cover sheet or summary can lead several of the split files at once.

What still works the same

Groups are additive — nothing you relied on has gone away. With no groups (or just one), Split PDF behaves exactly as before: Single PDF to combine your selected pages into one file, or Separate PDFs for one file per page. Groups simply unlock the case that used to be painful — producing several multi-page documents at once.

And like the rest of Split PDF, it runs entirely in your browser — your file never leaves your device.

Try it

Head to Split PDF, drop in a multi-section document, and add a couple of groups. For a step-by-step walkthrough — including the comma shortcut and how shared pages behave — see how to split a PDF into multiple files with groups.

We build these improvements based on how people actually use the tools — if there's something you'd like to see in Split PDF or anywhere else on Blackpdf, we're listening.