Stamp prepares discovery productions in your browser: Bates numbers, exhibit labels, confidentiality watermarks, and court-ready PDF splitting. Every document is processed 100% on your device. Nothing is uploaded, ever.
The extension is in Chrome Web Store review. The free tier ships with the extension the day it goes live; a Pro key bought today activates instantly when you install.
Sequential Bates numbers with prefix, suffix, start number, and zero-padding. Six positions, five fonts, four colors, and a white backing option so stamps stay legible on dark scans. Rotated pages are handled automatically.
Bates number multiple PDFs with continuous numbering carried file to file, plus a production log CSV (source file, output file, pages, Bates begin and end) that opens clean in Excel.
Classic bordered exhibit stamps, auto-sequenced labels across files (A, B, C or 1, 2, 3), CONFIDENTIAL and protective-order watermarks, page extraction, and splitting at e-filing size caps.
All PDF processing happens locally in your browser. There is no server, no account, and no telemetry. The only network request Stamp can ever make is verifying a Pro license key with Gumroad, and only when you enter one. The extension requests a single permission (storage). It cannot read your pages, your tabs, or your browsing. For privileged and confidential material, that is a compliance requirement, not a preference.
No upload happens. The file is read directly by your browser and never leaves your device.
Prefix (like ABC), start number, digit padding, position, font, size, and color. A live preview shows exactly where the stamp lands before you commit. Add an optional designation legend such as CONFIDENTIAL - SUBJECT TO PROTECTIVE ORDER in its own corner.
Every page carries its sequential Bates number. Document metadata is left untouched, and password-protected PDFs are refused with a clear message rather than silently modified.
Load the whole set. Numbering runs continuously across files, output files can be named by Bates range (ABC000001-ABC000045.pdf), and you get the production log CSV you would otherwise build by hand. The next production resumes at the carried-over number.
Full walkthrough: How to Bates Number a PDF for Free (Without Acrobat)
For comparison: Acrobat Pro runs $19.99 per month and BatesFast is $170 one-time. Stamp Pro is $15, once.