Split PDF
Pull selected pages out of a PDF into a new file, using ranges like 1-3, 5, 8-. Runs in your browser with no upload and no page limit.
Ranges, the way you would write them
Type 1-3, 5, 8- and you get pages one to three, page five, and everything from page eight to the end. Leaving the end of a range off means "to the last page", which is the thing you usually want and rarely get.
The pages you asked for are extracted into a genuinely new document rather than hidden in the old one. That distinction matters more than it sounds — see the note below.
Extracting is safer than deleting
If your goal is to send someone part of a document and not the rest, extract the pages you want rather than deleting the ones you do not. They are not the same operation.
Removing pages unlinks them from the document's page tree, but their content stays in the file, unreferenced and fully recoverable. Building a new document from the pages you selected copies only those pages, so nothing else comes along.
A page that is invisible and a page that is absent are not the same thing, and confusing them is the deepest misunderstanding people have about this format. There is a page about it here, with the bytes.
Bookmarks and links after a split
A bookmark is a pointer to a destination on a specific page. Keep the page and the pointer still resolves; drop the page and the bookmark becomes an orphan pointing at nothing, which most readers silently ignore and some display as a dead entry.
Internal links behave the same way. A cross-reference from page 4 to page 40 is fine if you keep both and broken if you keep only one. Nothing warns you, because as far as the file format is concerned an unresolvable destination is legal.
This is worth knowing when splitting a long report into sections: the sections will each be internally consistent and their contents pages will mostly not work. Rebuilding those is a separate job.
Answers
How do I write the ranges?
Comma-separated. 1-3, 5, 8- means pages one to three, page five, and page eight to the end.
Should I split or delete?
To share only part of a document, split. Deleting leaves the removed content in the file where it can be recovered.
Does it work offline?
After the page has loaded once, yes. Everything it needs is already in your browser.