Privacy Pass

Privacy Pass

Client-side of the Privacy Pass protocol providing unlinkable cryptographic tokens.

Privacy Pass promo image
What is Privacy Pass?

Privacy Pass is a Firefox extension that generates unlinkable cryptographic tokens for websites supporting the Privacy Pass protocol, like Cloudflare-protected sites. These tokens let you bypass CAPTCHA verifications, saving you time. Click the extension to open a provider's page, solve the CAPTCHA, and acquire tokens. Use tokens automatically when a CAPTCHA appears and refill when needed by solving new CAPTCHA.

Stats date:
Version: 3.0.6 (Last updated: 2023-09-04)
Creation date: 2017-09-18
Weekly download count: 129
Firefox on Android: No
Manifest version: 2
  • <all_urls>
  • cookies
  • webRequest
  • webRequestBlocking
Size: 274.27K
Email: Click to see
URLs: Website
Risk impact: High risk impact
Risk likelihood: Moderate risk likelihood

Other platforms

Privacy Pass
Privacy Pass (v3.0.6)
2.31 (683) 477,188
Not available on Edge

This extension provides unlinkable cryptographic tokens for websites that support the Privacy Pass protocol. For example, these tokens can be used on Cloudflare-protected websites to redeem a token instead of solving a CAPTCHA.

How it works?

Privacy Pass Providers: Cloudflare and hCaptcha

Get tokens

  1. Click on the extension icon, and click on top of one of the providers.
  2. One page will open with a CAPTCHA to be solved.
  3. Solve successfully the CAPTCHA and the extenison will get some tokens.
Use tokens
  1. When a page shows a CAPTCHA from one of the providers,
  2. if the extension has tokens, the browser uses a token to pass the provider's challenge without any interaction.
  3. Otherwise, the user must solve the CAPTCHA, which grants some tokens for future use.
See FAQs and Known Issues section: if something is not working as expected.
User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Reduces number of captchas for some users
  • Easy to set up
  • Doesn't function correctly or at all for some users
  • Issues with storing passes in localStorage
  • Difficulties with Tor browser
  • No functionality for import/export
  • Limited to 5 hCaptcha passes per completion
  • Poor performance on websites, including Discord
Most mentioned
  • Issues with Cloudflare
  • Problems with hCaptcha
  • Difficulties with localStorage
  • Failure to work properly in Tor browser
  • Lack of import/export features
View all user reviews
Risk impact

Privacy Pass is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install Privacy Pass if you trust the publisher.

Risk likelihood

Privacy Pass is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

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