How to Split a PDF

A 400-page textbook PDF. A 12-page contract where you only need pages 5 to 9. A bank statement that contains your landlord's receipt on page 3 and nothing else they need to see. Splitting a PDF is the answer to all of these, and the right way to split depends on which one you're looking at. This guide walks through how to split a PDF cleanly in your browser with Flint's Split PDF — by page range, by chunks, or one page at a time.

Why split a PDF at all?

Most PDFs people send are bigger than they need to be. A contract is the whole agreement when you only need the signature block; a bank statement is a year of transactions when one line is the receipt; a research paper bundle is forty articles when you want one. Splitting reduces a file to the bit that actually matters.

Common reasons people reach for it:

Sending just the relevant pages. Pull a single signature page out of a contract. Send your landlord the one receipt from your statement, not the whole month.
Breaking long documents into chunks. A textbook becomes a folder of chapters. A scanned book becomes one PDF per section.
Working around upload limits. Some portals cap uploads at 10 MB or 25 pages. Split, then upload each chunk in turn.
Archiving by section. Easier to find a single chapter PDF in a folder than to scrub through a 400-page monolith looking for page 287.

How to split a PDF in Flint

Open the Split PDF tool, drop the file in, pick the mode that matches what you want, and run the split.

Drop in the PDF you want to split

Drag it onto the upload card or pick it from your computer. A thumbnail strip appears so you can see what you're working with. Pro accepts files up to 250 MB, which comfortably covers thousand-page scans and most textbooks.

Choose how you want to split

Three modes, three jobs:

Page range — type something like 5-12 to extract pages 5 through 12 as one new PDF. Best when you want one specific section.
Every N pages — split the document into chunks of N pages each. Set N to your chapter length and a 400-page book becomes neat 20-page files. Ideal for breaking long documents into manageable pieces.
Individual pages — pick specific pages (say 3, 17, 42) and Flint outputs each as its own PDF. Useful when you want one page from here and one from there.

Run the split and grab the output

Click split and the resulting file (or files) land in your Flint library. Range and individual modes typically produce one or a small handful of PDFs; every-N-pages can produce a whole folder's worth at once. Original file is untouched.

What to do once you've split

The split outputs sit in your Flint library next to the original. From there the obvious next moves:

Recombining a different selection? Drop the new pieces into Merge PDF in whatever order you want.
Just need to drop pages, not isolate them? Delete PDF Pages is faster than splitting and recombining — you keep one file, minus the bits you don't want.
Pages in the wrong order to start with? Reorder PDF Pages lets you fix the sequence before you split, which usually means you end up splitting less.
Sensitive content on the page you're extracting? Use Redact PDF to strip text properly — full walkthrough in the redaction guide.
Big file even after splitting? The compress-a-PDF guide covers how much further you can usually go on image-heavy documents.

Other ways to split (and when they fit)

Print to PDF with a page range

Open the file in any PDF reader, hit print, choose “Save as PDF” as the printer, and type a page range in the print dialog. Works on Mac and Windows, no install required. Catch: it only does range mode, you have to repeat the whole dance for every chunk, and the output gets re-rasterised in some viewers so text can lose sharpness.

Adobe Acrobat

Has a proper Split tool buried in Organise Pages. Powerful, works well, requires a paid Acrobat install. Worth it if you already have Acrobat for other reasons; not if this is the only PDF thing you'll do this month.

Command line (pdftk, qpdf)

Scripts beautifully. Splitting fifty PDFs every Monday morning on a server? Reach for pdftk. Splitting one PDF on your laptop? A browser tool is faster.

Flint (the case for it)

All three modes — range, every-N-pages, individual — live on one page. You don't have to think about which feature is called what in which app. And because the output lands in the editor, the next thing you do (merge, delete pages, sign) is already there.

Tips for a clean split

Open the thumbnail strip and count from there. PDF page numbers and printed page numbers often disagree because of cover sheets and front matter. Use the strip to confirm which physical page is which before typing a range.
For every-N-pages, pick N that matches a real boundary. Splitting a textbook into 20-page chunks is fine if the chapters happen to be 20 pages each. Otherwise you'll end up with chapters spanning two output files. Worth a glance at the table of contents first.
If you're extracting a single page, name the file properly. contract-signature-page.pdf beats document_split_1.pdf next month when you're trying to find it again.
Don't use splitting to remove sensitive content. If page 7 has confidential info and you want to send pages 1-6 and 8-10, splitting and merging works but Redact PDF is the correct tool — it actually strips the underlying bytes from the file rather than just hiding the page.

Split PDF: frequently asked questions

What's the maximum file size I can split?

Flint Pro accepts files up to 250 MB.

Does splitting affect the quality of the pages?

No. Pages are extracted byte-for-byte, not re-rendered. Text stays selectable, embedded fonts stay embedded, and images keep their original resolution.

What happens to the original file?

It stays in your Flint library, exactly as you uploaded it. Splitting produces new files; nothing about the original changes. Delete anything you don't want anymore from My Documents.

Can I split a password-protected PDF?

Only if you can supply the password to open it. Once unlocked, the split works normally. If you're the one adding the password, do it after splitting via Password Protect PDF.

Are my files private?

Yes — files land in your private library, the split happens on your account, and we don't share, sell, or train on the documents.

What if I split the wrong pages?

Re-run with the right range. The original is untouched and still in your library, so re-splitting is cheap.

Ready to split?

Drop your PDF into Flint's Split PDF tool, pick range, chunks, or individual pages, and run the split. From there the rest of Flint — merge, reorder, delete pages, sign, redact, compress — is one click away.