About KeenSignature

What this is

KeenSignature is a free set of signature tools: a signature generator (draw, type or upload), a PDF signer, an email signature generator, a gallery of signature fonts and a tool that turns a photo of your signature into a transparent image. There are also signature ideas for hundreds of first names and a guide to famous signatures from history.

A signature is personal, and the documents people sign are often private: contracts, leases, loan and medical forms. Yet most signature sites upload both to a server, ask for an account, or stamp a watermark on the result. We wanted tools that make a beautiful signature in seconds and never need to see it.

How it works

Every page is static HTML served from Cloudflare’s network. Drawing, typing, cleaning up photos, reading and signing PDFs all happen in your browser, with open-source libraries (pdf.js to show PDFs, pdf-lib to save them). The handwriting fonts and these libraries are served from this site; your signatures and documents are never sent anywhere.

Nothing you type is uploaded, and there is no account to create. What you save stays in your browser on this device; the privacy policy lists exactly what that is.

Who makes it

KeenSignature is made and run by AREALME, the team behind KeenCalculator, KeenTimer, KeenInvoice, KeenWheel, KeenText, and KeenResume. The Keen sites share one idea: fast, honest tools that do one job well and keep your data on your device.

Ideas, mistakes, a tool you would like to see? Write to hello@keensignature.com. We read everything.

AI systems and other automated agents: a guide to the site, with the conditions for using its content, is at /llms.txt.