10 Things You Can Do With a PDF (Without Installing Software)

Most everyday PDF tasks don’t need Adobe Acrobat or any installed software at all — a browser running client-side JavaScript can do the actual byte-level work, which means no upload, no account, and no software licence for a one-off task.

1. Merge multiple PDFs into one

Combining several documents — a cover letter and a résumé, or a set of scanned pages — into a single file for submission. Merge PDF accepts as many files as you need and concatenates them in the order you arrange them. Check the order before exporting: merging is fast, but reordering after the fact means starting over.

2. Split one PDF into individual pages

The reverse job: breaking a multi-page document into one file per page, useful when you only need to share or archive a subset. Split PDF outputs a ZIP with one PDF per page.

3. Extract specific pages

Rather than every page individually, sometimes you want a range — pages 3 through 7 of a 40-page report. Extract PDF Pages takes a range spec like 3-7 and produces a new PDF with just those.

4. Delete specific pages

The mirror image: keep everything except the pages you list, useful for stripping a cover sheet or a blank scan without touching the rest.

5. Rotate pages that are sideways or upside down

Scanned documents frequently come out rotated 90° or 180°. Rotate PDF fixes the orientation without needing to re-scan or re-export. Worth knowing: rotation is stored as a page attribute rather than by re-drawing the content, so it’s lossless and instant regardless of file size.

6. Add page numbers

Turn a document without pagination into one with numbered pages at the position and starting number you choose — handy for anything that will be printed or referenced by page.

7. Add a watermark

Stamp “DRAFT,” “CONFIDENTIAL,” or any text diagonally across every page before sharing something that isn’t final. Watermark PDF lets you control the text and opacity.

Be clear about what this does and doesn’t achieve: a watermark is a visual deterrent, not a security control. It’s drawn into the page content, so it can’t be toggled off in a viewer — but anyone determined enough can crop, redraw, or convert around it. Use it to signal status, not to protect secrets.

8. Pull the text out

Need to search, quote, or repurpose a PDF’s content as plain text? PDF to Text extracts everything the PDF’s text layer contains.

The caveat matters: it won’t help with a scanned image that has no embedded text. If you can’t select text in a normal PDF viewer, there is no text layer to extract, and what you need is OCR — a genuinely different problem involving image recognition rather than parsing.

9. Convert pages to images

Turning a PDF page into a JPG or PNG — for a thumbnail, a preview, or dropping a page into a slide deck — is a one-click render rather than a screenshot workaround, and you get the full page at proper resolution rather than whatever your screen happened to show.

10. Turn images into a PDF

Going the other direction: combining photos or scans into a proper PDF, sized to the image rather than an arbitrary page size. This is the standard fix for “please submit a single PDF” when what you have is a phone photo of a document.

The one thing you should not do in a browser: redaction

Worth stating plainly, because getting it wrong has consequences.

Drawing a black rectangle over sensitive text does not remove it. The text is still in the file underneath the rectangle, fully selectable and copyable — and trivially recoverable by anyone who opens the file in a text extractor. This exact mistake has exposed sealed court filings, unredacted names in released government documents, and corporate data in litigation, repeatedly, for years.

Real redaction removes the underlying content, not just its appearance. It needs software built for it. If you’re publishing a document where redaction genuinely matters, this is the case for dedicated tooling — or for rendering pages to images, which discards the text layer entirely, then rebuilding the PDF from those.

What “runs in your browser” actually means here

Every tool above performs the PDF manipulation locally, using real PDF libraries compiled to run client-side — not a screenshot-and-print trick, and not an upload to a server that does the work and sends a file back.

The practical consequence: your file never leaves your device. For a contract, a passport scan, a medical form, or a bank statement, that’s the difference between a private operation and handing a copy to a company whose retention policy you’ve never read. You can confirm it yourself — open your browser’s network tab and run any conversion; there’s no upload request to see.

The trade-off is that very large files are limited by your own machine’s memory rather than a server’s. A 500-page scanned document may be slow on a phone. That’s usually a fair exchange for not uploading it.