The short version

  • Profiles, bypass rules, preferences, and optional credentials stay in chrome.storage.local in the current Chrome profile.
  • ProxyFox has no developer backend and contains no advertising, analytics, telemetry, or profiling service.
  • Local storage is not an encrypted credential vault. Someone with access to the operating-system account or Chrome profile may be able to read it.
  • Exports exclude usernames and passwords by default; plaintext credentials are included only after explicit opt-in.

Data handled locally

The extension stores values you enter: profile names, protocols, hosts, ports, credentials, global and per-profile bypass rules, interface language, reload preference, and connection-test settings. Chrome removes extension-local storage when the extension is uninstalled.

Network behavior

When you activate a profile, Chrome routes browser traffic through the proxy you selected. You provide and control that proxy; use only a provider you trust. When you explicitly run a connection test, the extension requests your configured test URL through the candidate proxy and restores the prior setting afterward. The proxy and test endpoint may observe ordinary network information; ProxyFox does not receive the request.

Credentials are supplied only when Chrome's proxy authentication challenge strictly matches the host and port of the active or candidate profile.

Why permissions are needed

  • proxy: configure and switch Chrome proxy settings.
  • storage: store profiles locally.
  • webRequest and webRequestAuthProvider: answer matching proxy authentication challenges.
  • <all_urls>: required by the proxy-authentication event filter; not used to read or modify page content.

This website

proxyfox.io is a static site with no analytics, advertising, or profiling scripts. If you follow a link to the Chrome Web Store, GitHub, or email, that destination applies its own privacy policy.

Contact and changes

Send privacy questions to support@proxyfox.io or open a GitHub issue. Material changes will update the effective date on this page.