Split a long PDF into bindable parts, without breaking a chapter

Yes. You only drop the PDF and press Split. The tool reads the whole book by itself, finds where every chapter ends, chooses the cut points so the parts are nearly equal and fit the binding, and makes the PDFs. You do not type any page numbers and you do not choose the cut points. The chapter list and settings are shown only so you can change them if you want to.

Think of a long book as a long train. Each chapter is one carriage. The book is too long to bind as one, so it must be cut into smaller trains. This tool cuts only in the gap between two carriages, never through the middle of a carriage. It finds the gaps by itself, so you just give it the book and press one button.

Drop the PDF on the tool above. It reads the whole file on your device, finds the chapters and the contents pages, and suggests near-equal parts that fit your binding limit, cut only at the start of a chapter. Press Split the PDF and each part is saved as its own file.

First from the PDF bookmarks, which most books and exported documents carry. When there are none it looks for headings such as Chapter 7, Unit 3, Lesson 2 or a large title on a nearly empty page. Every chapter it finds is listed with its page range, and you can untick anything that is not a real chapter.

No, unless you allow it. Cuts land on the first page of a chapter. If no combination of chapter breaks fits your page limit, the tool tells you instead of guessing; you can then raise the limit or tick the option that allows a cut inside a chapter.

Every possible set of chapter breaks is tested and the one that keeps the parts closest in size, with none over your limit, is chosen. A 1,500-page book usually comes out as three parts of about 500 pages rather than 550, 550 and 400.

Yes. Pages that look like a contents list, many lines ending in a page number, are found automatically and listed. Keep Repeat the contents pages ticked and they are placed at the front of every part, so each volume can be used on its own. You can correct the page numbers by hand.

An optional sheet for each part showing Part 2 of 4, a small picture of the book's first page, the original page range and the chapters inside. It is the first sheet of each part PDF, printed on both sides: a long chapter list continues on the back, which also carries a small QR code to this tool. The book itself always starts on a fresh sheet, so the cover can be torn off without losing a page. It makes the volumes easy to identify on the binding table and for the customer afterwards.

Not with Keep original size: the pages are copied exactly as they are, so text stays selectable and the quality is untouched. Fit on A4 resizes each page to fit A4 with the margin you choose, still without re-compressing it. The only additions are the optional cover page, the repeated contents pages and, if you tick it, a small Part 2 of 4 line at the bottom.

We bind up to 275 sheets, which is 550 pages printed front and back, and about 500 pages is comfortable to use. Set whatever your binder takes; the default is a 550-page limit aiming at 500.

No. The PDF is read and split inside your browser on your own device. Nothing is sent to our server or anyone else's.

Many PDFs carry their own page numbering, so a viewer shows Cover, i, ii, iii before page 1. The splitter always counts every page from the first sheet of the file. Use Clear page numbers at the end of the tool first: it removes that numbering, downloads a new copy and loads it into the tool. Open the new copy in your PDF viewer and the numbers you see are the numbers to type in the Manual split. Numbers printed on the pages themselves are not changed.

Yes. A scan has no text, so no chapters are found automatically. Use the Manual split box below the tool: choose the number of parts or type the page numbers yourself, write the chapter names for each cover, and split. Or run the file through our free OCR first to add a text layer.

No. Use the binding splitter as many times as you like, every day, with as many PDFs as you need. There is no daily limit, no file-count limit, no account and no paid plan.

Only your own device's memory (RAM). We set no size limit, because the work is done on your phone or computer and nothing is uploaded to us. A laptop or desktop can handle far bigger files than a phone. If a very large job slows down, close other tabs and apps, or use a computer.

Many online PDF websites upload your file to their server and limit free use by file size or number of tasks. The binding splitter works inside your own browser instead: no upload, no size cap set by us, no daily limit, no signup and no watermark, free for personal, school and business use.