Break a big PDF into parts under an MB limit
If email or a portal refuses anything over 5 MB, set your limit and the tool cuts the PDF into parts of that size and hands them over in a ZIP. Pages are never cut in half.
Email attachments cap out around 25 MB. Government portals often allow 2 MB, sometimes less. WhatsApp has its own limit. If compression is not enough, the document has to be broken into parts.
This tool works out where the page breaks fall so that every part stays under the size you set, rather than making you guess at page numbers and check each result.
One file is always easier for the person receiving it than four. Run Compress PDF first — a scanned document often drops by 80% and no longer needs splitting at all. If it is a colour scan of text, PDF to Black & White makes an even bigger difference.
If you do have to split, name the parts clearly — 'Part 1 of 3' — and say so in your covering message.
No, every part contains whole pages only.
Run Compress first, then split.
No. It is split in your browser.
Each part stays under it. Pages cannot be divided, so parts vary a little in size.
That page cannot be made smaller by splitting. Compress the file first.
Yes, with Merge PDF.
🔒 Everything on this page happens inside your browser. Your file is never uploaded to a server.