Is my file uploaded to a server?

No. The file is opened by JavaScript and WebAssembly running inside your own browser tab. It is never uploaded, there is no server-side processing and nothing is stored — closing the tab discards everything.

It says the PDF has no bookmarks.

Then the outline was never written into the file — a printed table of contents on page 2 is not the same thing. Use Split every N pages if the sections are a fixed length, or create the outline with Edit bookmarks and split afterwards.

Do I have to export every section?

No. Tick only what you want. A 400-page manual where you need three chapters gives you three files, not four hundred pages of files you throw away.

How are the page ranges worked out?

Each entry runs from its own target page up to the page before the next entry at the same level or above. That is why a well-formed outline splits cleanly and a hand-edited one with entries pointing at odd places may not.

What if an entry points at a web address?

There is no page range to cut, so it cannot become a file. Only entries that target a page in the document can be exported.

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Organize

Split by bookmarks

Use the PDF's table of contents to cut it into one file per bookmark.

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A document with a proper outline already knows where its sections begin — that is what a bookmark is. This tool uses that knowledge instead of asking you to count pages: it reads the outline, shows you each entry with the page range it covers, and lets you tick the ones you want as separate files.

It only works on a document that actually has bookmarks. If the outline was never written, there is nothing to split on and the tool says so rather than guessing at section boundaries; use Split every N pages if the sections are a fixed length, or build the outline first with Edit bookmarks and come back.

How it works

Drop in a PDF that has bookmarks.
Look through the entries found, each with its page range.
Tick the sections you want as separate files.
Export the selection.

What people use it for

Cutting a bound annual report into one file per chapter for a website.
Splitting a merged tender pack back into the individual documents it was built from.
Sending one section of a long manual to somebody without the other four hundred pages.

Frequently asked questions

Is my file uploaded to a server?: No. The file is opened by JavaScript and WebAssembly running inside your own browser tab. It is never uploaded, there is no server-side processing and nothing is stored — closing the tab discards everything.
It says the PDF has no bookmarks.: Then the outline was never written into the file — a printed table of contents on page 2 is not the same thing. Use Split every N pages if the sections are a fixed length, or create the outline with Edit bookmarks and split afterwards.
Do I have to export every section?: No. Tick only what you want. A 400-page manual where you need three chapters gives you three files, not four hundred pages of files you throw away.
How are the page ranges worked out?: Each entry runs from its own target page up to the page before the next entry at the same level or above. That is why a well-formed outline splits cleanly and a hand-edited one with entries pointing at odd places may not.
What if an entry points at a web address?: There is no page range to cut, so it cannot become a file. Only entries that target a page in the document can be exported.

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