Compare software

ChameleonCanvasBlocker
Free

Free to install from its public repository.

 Free

Free and open source under the MPL.

Browser extension Browser extension
  • Spoofs the user agent and wider browser profile
  • Interface familiar to former Random Agent Spoofer users
  • Faking rather than blocking keeps sites working while breaking the fingerprint
  • Very granular per-API and per-site configuration
  • Built for Firefox
  • Spoofed profiles can break or change how some sites behave
  • Firefox focused
  • Aggressive settings break image editors, games and captchas
Browser extension Browser extension
Closed source Open source
License not stated License: MPL-2.0
No account needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.