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Preview of ProxyContain

ProxyContain by Diego Fernando

Proxycontain is a Firefox extension that integrates Firefox Contextual Identities (Containers) with per-container proxying and HTTP header manipulation. It is designed for web application security testing and penetration testing workflows.

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Extension Metadata

About this extension
This extension allows you to:
-Create, open, and delete containers
- Assign a proxy to a specific container
-Clear cookies, local storage, and session storage
-Add or replace custom headers for specific containers
-Highlight Burp requests (requires Crypto Stripper)

The source code can be found at:
https://github.com/dfuribez/proxycontain
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Permissions and data

Required permissions:

  • Control browser proxy settings
  • Access browser tabs
  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
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More information
Add-on Links
  • Homepage
Version
1.1
Size
281.12 KB
Last updated
6 days ago (Jan 5, 2026)
Related Categories
  • Privacy & Security
  • Tabs
License
Mozilla Public License 2.0
Version History
  • See all versions
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