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UD Certificate Issuer

ProFree during beta

Issue verifiable certificates as sealed .uds documents with a unique certificate ID, recipient details, issuer, credit hours, and optional expiry.

Runs in your browser. No data sent to any server. Part of the Universal Document™ ecosystem.

How UD Certificate Issuer differs from PDF certificates and Credly

PDF certificates can be forged in seconds. Credly badges require platform accounts. UD certificates are tamper-evident and verifiable by anyone with no account required.

PDF certificate
The most common format — and the easiest to forge. Anyone with Photoshop can produce an identical-looking certificate. There's no way for an employer or regulator to verify it hasn't been altered.
Credly / Acclaim digital badges
Cryptographically anchored badges requiring issuer accounts, platform integration, and recipient email addresses. Verification depends on Credly's platform remaining live and accessible.
UD Certificate Issuer — tamper-evident sealing
The certificate is sealed with a cryptographic hash at the moment of issue. Any modification to the recipient name, issuer, date, or achievement description invalidates the seal — detectable by UD Reader in one click.
UD Certificate Issuer — no platform dependency
The proof lives inside the .uds file. Verification works offline with UD Reader — no internet connection required, no Credly account, no issuer platform needed. The certificate survives platform shutdowns.