Split by Bookmark, Size or Text
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Cut a long document where it actually divides, rather than at page numbers you have to look up.
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Drag & drop your PDF here
PDF only
Splitting by page number means opening the file, finding where each section starts, writing the numbers down and hoping you did not miscount. A long report already knows where its chapters begin, because its bookmarks say so.
The other two modes cover the cases where the boundary is not structural: an attachment size limit that a mail server enforces, and a batch of documents scanned into one file where each begins with the same word.
bookmark: a new part at every top-level outline entrysize: fill each part until adding the next page would pass the budgettext: a new part at every page containing the stringThe text mode matches case insensitively and looks at the text layer, so it works on a document that was exported rather than scanned. A scan with no text layer needs OCR first, which this tool does not do.
The tool says so rather than returning the whole file as one part. Use the size or text mode, or the page range tool, when there is no outline to work from.
No, only top-level entries. A chapter starts a part; a sub-heading inside it does not.
Each part is filled until adding the next page would pass the budget, so parts land under the limit rather than exactly on it. A single page larger than the budget becomes its own part.
Only if the scan has a text layer. Splitting at a word requires text to search; a picture of a word is not text. That needs OCR first.
As a ZIP containing one PDF per part, numbered in document order.