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.
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
-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.
More information
- Add-on Links
- Version
- 1.1
- Size
- 281.12 KB
- Last updated
- 6 days ago (Jan 5, 2026)
- Related Categories
- License
- Mozilla Public License 2.0
- Version History
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