Free Split PDF Every N Pages — Chunk PDFs Online

Long PDFs are hard to share and slow to load — email caps, upload limits, and endless scrolling. Drop in your PDF, set how many pages go into each chunk, and this tool splits it into separate PDF files you can download individually or all at once. The splitting runs entirely in your browser with the pdf-lib engine; your files never leave your browser.

How it works

• Step 1 — Drop in your PDF (any size — the engine reads it locally).
• Step 2 — Pick a preset (every page, 5, 10, 20) or slide to any chunk size, and choose sequential file names.
• Step 3 — Hit Split PDF — each chunk becomes its own PDF, downloadable one by one or all at once.

Everyday uses

• Email limits — split a 50 MB document into 5 MB chunks that pass attachment caps.
• Print shops — send only the pages they need instead of the whole file.
• Students — split a textbook PDF into chapters for easier reading on a phone.
• Offices — break long reports into sections to share with different teams.
• Archiving — chunk yearly scans so one corrupted file can’t take down the whole archive.

Rule of thumb: 10 pages per chunk is the sweet spot for email — most chunks land under 10 MB, which sails through Gmail, Outlook, and corporate filters.