Open DevTools.
Draw a border.
Watch nothing get sent anywhere.
Add a rectangular border frame to every page of a PDF — pick the margin, the color, and the stroke width — all inside this tab. Page dimensions and content stay exactly as they were. Zero network requests after the page loads, same rule as every other tool here. Check the Network tab yourself.
Drop one PDF here or click to browse
One file at a time · stays on this device
Honest note: this only draws an outline — it doesn't resize the page or touch existing content. The margin is measured from each page's own edges, so it must be less than half of the page's smallest dimension. Use Resize Pages instead if you want to rescale a page, or Watermark if you want a text/image overlay instead of an outline.
Why trust this tool
No accounts
No signup, no email, no watermark. Use it and close the tab.
No limits (for now)
Border as many pages as your device's memory allows. No artificial caps.
Numbering or watermarking a PDF? Both live too.
Stamp page numbers into any corner, overlay a text or image watermark, or rescale pages to a standard size — same rule: everything stays local. Leave your email and we'll let you know about a Pro batch mode.
Thanks — saved locally for now, we'll be in touch once signups are live.
Drawing a frame without touching what's inside it
Page Borders draws an unfilled rectangular outline on every page — margin, color, and stroke width are all yours to set — via pdf-lib's drawRectangle, the same drawing primitive Watermark's text and Resize's scaling build on, just used here for a stroke-only shape. The margin you enter is validated against half of the page's own smallest dimension, so an oversized value fails cleanly with a message instead of drawing a rectangle that's inverted or doesn't make sense.
This only adds a border; it doesn't rescale the page like Resize Pages or overlay content like Watermark — everything else on the page stays exactly where it was. Same rule as everywhere else here: a password-protected file has to be decrypted before this or any tool can touch it — here's why.