Delete PDF Pages in Your Browser, Without Uploading

What happens when you delete PDF pages?

Page deletion does not actually remove pages from your original file. The original PDF on your disk stays exactly as it was. The tool reads the file, marks which pages to keep, and writes a new PDF containing only those pages. You get the new PDF as a download; the old one is untouched. This is the safest model: if you make a mistake, the original is still there.

Under the hood, pdf-lib copies the kept pages into a fresh PDF document. Each page's contents (text, images, fonts, annotations) come along with it. The output is a normal PDF that can be opened in any reader. The pages are renumbered consecutively in the output (page 1, 2, 3, etc.); the original page numbers are gone unless they were rendered into the page content itself.

Two ways to select pages: thumbnails or page numbers

The visual workflow is fastest when you do not already know which pages to remove. Thumbnails of every page render in seconds (pdfjs-dist rasterises each page at 40 percent scale). You click a thumbnail to mark it. The thumbnail dims and a trash icon appears. Click again to unmark. This is the natural way to clean up a scanned document where you need to eyeball each page to decide.

The page-number text input is faster when you already know the page numbers. Type "1, 3, 5-10" to mark page 1, page 3, and pages 5 through 10 for removal. Spaces around commas are optional. Page numbers higher than the document length are ignored. The Apply button replaces the current selection with the parsed numbers; if you want to add to the selection, mark them via thumbnails after applying.

Quick Select presets: odd, even, all

Three one-click buttons cover the common bulk-selection cases. Odd pages selects pages 1, 3, 5, etc. Even pages selects 2, 4, 6, etc. All selects every page (you would need to deselect at least one to leave a valid output). Clear deselects everything. These presets are quick fixes for duplex-scanned documents where one side is blank, or for tearing out every page that follows a particular pattern.

Why deleting locally matters for confidential documents

Most people who search "delete pages from pdf" are cleaning up a document they already received and need to forward in a smaller form. That document is often confidential: a contract draft to share with a colleague (minus the redacted negotiation pages), a financial report (minus the appendix), or a medical record (minus the cover letter). Every alternative service (iLovePDF, Smallpdf, PDF24, Sejda) requires uploading. For confidential documents, this is an unnecessary risk. Gizmoop runs everything in your browser tab, so the document never reaches anyone else's server.

What does not survive deletion

Bookmarks pointing to deleted pages are broken (their target no longer exists). Other bookmarks may renumber. Internal hyperlinks that pointed to deleted pages break. Hyperlinks to surviving pages still work, but they now point to renumbered locations. Digital signatures invalidate because the file content changed. Form field data on surviving pages is preserved; data on deleted pages is gone with those pages. For documents where any of those properties matter, test the output before relying on it.

Comparison with iLovePDF, Smallpdf, Sejda, PDF24

iLovePDF offers thumbnail-based selection with shift-click range, plus a page-number input. Free, but files upload to their server and are deleted after 2 hours. 100 MB free cap. Smallpdf has a clean thumbnail UI but caps free use at 2 tasks per day; everything beyond that needs a Pro subscription. Sejda offers thumbnail and interval-based deletion, but free use is capped at 3 tasks per hour, 50 MB total, and 200 pages. PDF24 is free, no quota, no watermarks, but still uploads server-side. Gizmoop matches everyone's features and goes further on privacy: zero upload.

Working with large PDFs

Loading thumbnails for very long PDFs (200+ pages) takes a few seconds. Each thumbnail is rendered with pdfjs-dist on your device's CPU. A 500-page PDF takes about 30-45 seconds to fully render thumbnails on a modern laptop; the progress bar shows pace. After thumbnails are loaded, selection and deletion happen instantly. Mobile devices handle 100-200 page PDFs comfortably; longer documents may strain mobile RAM.

Working with password-protected PDFs

The tool cannot open encrypted PDFs directly. If you drop one, you get an error telling you to unlock first. Use our Unlock PDF tool (you must know the password) to remove encryption locally, then delete pages from the unlocked file. The password is processed in your browser and never sent to a server. If you want the output PDF to be re-protected, run it through our Protect PDF tool after deleting.

Difference between Delete and Extract

Delete and Extract are inverse operations. Delete removes the pages you select and keeps everything else; output contains the kept pages. Extract keeps only the pages you select and discards everything else; output contains just the selected pages. Choose Delete when most of the PDF should stay and you want to drop a handful of pages. Choose Extract when you want just a few pages out of a much larger document.

File size after deletion

Each removed page reduces the output size by roughly its share of the original. Image-heavy pages contribute more bytes; text-only pages contribute less. The output is rebuilt cleanly so there is no residual data from deleted pages. For maximum size reduction beyond deletion, run the output through our Compress PDF tool.

Common edge cases

Cannot delete every page: you must keep at least one. Cannot delete pages from encrypted PDFs without unlocking first. Cannot recover deleted pages from the output PDF (they are not stored in any hidden form). Cannot delete pages from a signed PDF without invalidating the signature. Cannot delete pages from a corrupt PDF; if pdf-lib refuses to load it, try opening and re-saving in a PDF reader first.