Copied, not re-created
There are two ways to produce a PDF containing some of another PDF's pages. The lazy way is to draw each page as a picture and build a new document from the pictures: quick to write, and it ruins the file - the text stops being text, the size balloons and the links die. This tool does the other thing. It copies the page objects themselves into a new document, with their fonts, their vector drawings and their embedded images intact.
The practical result is that an extracted page is byte-for-byte as good as the original. Search still finds the words, a screen reader still reads them, and the file size is proportional to what you kept rather than to how it was rendered.
How to write the page range
The box accepts single pages, ranges and lists: 4 for one page, 2-6 for a run, and 1-3,7,12- for the first three pages, page seven and everything from twelve to the end. Spaces are ignored, and the order you type them in is the order you get.
If you ask for a page that does not exist the tool tells you rather than silently producing an empty file. Leave the box empty and nothing happens, because extracting every page would just be a copy of what you already have.
One file or one file per page
Most of the time you want one PDF with the pages you chose - three pages of a form, the two pages of an invoice that matter, a chapter of a report. That is the default.
The other mode gives you a separate PDF for each page, downloaded together as a ZIP. This is what you need when every page has to be uploaded individually, which several government and banking portals still insist on, or when you are splitting a batch of scanned documents back into separate records.
Nothing is uploaded
Files are not uploaded - everything happens in your browser. The PDF is parsed locally, the new document is built in memory, and it goes straight to your downloads. That matters for this tool in particular, because the documents people extract pages from are usually the private ones: payslips, bank statements, medical letters, contracts.
A password-protected PDF has to be unlocked first - encryption is there precisely to stop tools like this one reading the file. Unlock PDF will remove a password you already know.