Split a PDF by file size
Break a big PDF into smaller files that each stay under a size limit — handy for email attachments.
or drop PDF files here
🔒 Your file never leaves your device
How to use Split by File Size
- Choose your PDF.
- Set the maximum size per part.
- Download the parts as a ZIP.
Why use Bynd PDF
- Private by design. Your files are processed inside your browser and never uploaded.
- Free, with no sign-up. No account, no watermark, no daily limits.
- Fast. No uploading or downloading a copy — the result is ready as soon as it is processed.
Frequently asked questions
How does it decide where to cut?
It keeps whole pages together and starts a new file before the size limit is exceeded.
What if one page is bigger than the limit?
That page goes into its own file — a single page cannot be divided.
Are my files uploaded to a server?
No. Bynd PDF runs entirely in your browser, so your files are processed on your own device and never sent to us or anyone else.
Related tools
✂️Split PDFBreak one PDF into several — by page, or by custom ranges.📦Compress PDFShrink file size — best for photo-heavy or scanned PDFs.📤Extract PagesPick the pages you want and save just those as a new PDF.🔖Smart Split (Bookmarks)Split a PDF at its own chapter bookmarks — no manual page ranges…📎Merge PDFCombine multiple PDFs into one, in the order you want.🗂️Batch CompressCompress many PDFs at once, download them all as one ZIP.