StylusPDF Blog

Guides and how-tos for working with PDFs — free and private.

• Are Online PDF Tools Safe? What Really Happens to Your Files

  2026-10-03

  Most free PDF tools upload your file to a server to process it. Here's what that means for your privacy — and how to work with PDFs without uploading anything at all.

• How to Delete Pages from a PDF for Free (No Sign-Up, No Watermark)

  2026-09-26

  Remove unwanted pages from a PDF and keep the rest — free and in your browser, so your file never leaves your device.

• How to Add Page Numbers to a PDF for Free (No Sign-Up, No Watermark)

  2026-09-19

  Stamp page numbers onto a PDF with control over position and style — free and in your browser, so your file never leaves your device.

• How to Add a Watermark to a PDF for Free (No Sign-Up, No Watermark Ads)

  2026-09-12

  Overlay text like DRAFT or CONFIDENTIAL across every page of a PDF, free and in your browser. Your file never leaves your device.

• How to Redact a PDF for Free (No Sign-Up, No Watermark)

  2026-09-05

  Black out sensitive information in a PDF before you share it — free and in your browser, so the file you're protecting never gets uploaded.

• How to Sign a PDF for Free (No Sign-Up, No Watermark)

  2026-08-29

  Sign a PDF online for free — draw, type, or upload your signature and place it anywhere. Runs in your browser, so your contract never leaves your device.

• How to Split a PDF for Free (No Sign-Up, No Watermark)

  2026-08-22

  Split a PDF into separate files or pull out just the pages you need — free, in your browser, with no quality loss and no uploads.

• How to Merge PDF Files for Free (No Sign-Up, No Watermark)

  2026-08-15

  Combine several PDFs into one file, free and in your browser. Reorder them, keep full quality, and your files never leave your device.

• How to Rotate a PDF for Free (No Sign-Up, No Watermark)

  2026-08-08

  Rotate a PDF online in seconds — one page or all of them. Works entirely in your browser, so your files never leave your device.