Browser Extension
Sign content.
Verify what's real.
Add SureMark to your browser and instantly verify signed content from creators across every major platform — or sign your own.
01
Add to Chrome
Click "Add to Chrome" below and confirm the install prompt.
02
Pin to your toolbar
Pin the extension for one-click access whenever you need it.
03
Start verifying
Viewing verified content is always free — no account needed.
↓ Add to Chrome — Free
Works with Chrome,
Edge & Brave
Edge & Brave
SureMark for iPhone & iPad
Sign and verify content on the go.