Type the pages you want gone as a comma-separated list — single numbers, ranges, or both. The pages that stay are copied into a new file exactly as they were, with no second pass over the text or the images. Whatever belongs to the document rather than to a page — the bookmark outline, the title and author fields — does not come across.
The PDF engine (about 500 KB) loads only when you drop a file in, so the page itself stays light. Your file is read on your own machine and never sent anywhere. Open your browser’s network tab and watch while you use it.
Like this: 1, 4-6, 12. Commas separate the entries, and numbering starts at 1, matching what your reader shows. Spaces around a number or around the dash are ignored, but a space is not a separator on its own: 1 4 6 with no commas matches nothing. A backwards range such as 6-4 is read the same as 4-6.
Anything that is not a number or a number range is dropped without comment, and so is a number past the end of the file. If nothing you typed lands on a page, you are told that rather than handed back an unchanged copy.
The page content does — the text, the images, the way the page looks. The outline does not. The pages you keep are copied into a document that starts out empty, and bookmarks belong to the document rather than to any page. The title and author fields go the same way.
It stops and tells you. A PDF with no pages left in it is not something a reader will open, so you get the message rather than an empty file.
These all work the same way, in your browser. Most are free; the ones marked as needing a plan are not.
A new DeskKit tool lands every week or two. Leave an address to hear about it. Nothing else is ever sent, and one click removes you.