100% in your browser — files never uploaded

Split a PDF by content — and name each file from what's actually on the page.

"Split by content" usually means two things people lump together: finding where one document ends and the next begins by matching a repeating value, and then giving each output file a name that reflects that value instead of a generic number. PDF SmartSplit does the first for free, right in this browser tab — and this page walks through exactly where the second one stands today.

Split by content free → See how it works

No signup. No install. Free for files up to 30 pages.

How to split a PDF by content

Splitting on content means matching a value that repeats once per document — not a fixed page count.

Find the field that repeats

Open two or three documents in the batch and look for a label that shows up once per document — "Invoice #", "Account:", "Employee ID:" are common. That label is what the tool searches for on every page.

Drop your PDF in below

It loads into your browser's memory only — nothing is uploaded. Confirm the split groups pages correctly using the free text-match mode.

Download the zip

Free tier names each output part-01.pdf, part-02.pdf, and so on — the split is content-aware, the filename isn't yet.

Splitting and renaming are two separate operations: grouping pages into the right document boundaries is one problem — matching a repeating label solves it. Turning the value next to that label into a filename is a second, different operation: extracting the specific text (not just detecting that the label is present) and writing it into the output name. Free tier solves the first problem completely; Pro is what closes the gap on the second. Honest limitation: both steps need a real, selectable text layer — a version that's been printed and rescanned has no extractable text for either. PDF SmartSplit uses pdf.js to read the text and pdf-lib to assemble each document's pages into their own file, both running as JavaScript in this page.

Split your PDF by content

Free tier: 1 file at a time, up to 30 pages. Text-layer PDFs only (no scanned/OCR yet).

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Drag & drop your combined PDF here, or click to choose

Up to 30 pages · stays on this device

Ready for the filename to match the content?

Pro (in development) adds a pattern you define to pull the actual value out of each page — not just detect that the label is present — and writes it straight into the output filename, e.g. INV-1042.pdf instead of part-03.pdf. You can define multiple fields and combine them in a template, e.g. {invoice_no}_{date}.pdf — plus multi-file batch processing and unlimited pages. One-time $19, no subscription.

See Free vs Pro →

Your document never leaves your browser

PDF SmartSplit has no upload endpoint, no server that touches your document, and no account to leak. Open your browser's network tab while you split a file — you'll see it stay quiet. Processing uses pdf.js and pdf-lib running as JavaScript in this tab; the zip is built in memory and handed straight to your browser's download dialog.