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ProxyMust is a powerful and convenient proxy server manager with selective routing, testing, and automatic quality rating.

The extension allows you to flexibly configure when and for which sites to enable a proxy, automatically check their availability, and sort them by rating.



🔥 Key features

• Four operation modes – direct connection, selective proxy (by rules), always on (with exceptions), and system proxy.
• Flexible rules – domains and subdomains, URL patterns, regular expressions, exact URLs, and CIDR ranges. Rules can be created manually or imported from GFWList / SwitchyOmega.
• Proxy testing – four types of checks: accurate (slow), express, cyclic (full switching), and express‑cyclic. Tests can be run for all proxies, selected ones, or the current site.
• Rating and statuses – each proxy receives a numeric rating (+1 for success, –1 for failure). A status for the chosen site is displayed next to each proxy: ✅ working, ☑️ probably working, ❔ IP obtained (page not loaded), ❓ no data, ⛔ not working.
• Context menu – in the proxy table (right‑click) you can change rating, set priority (📌 pin / ⭐ star), export selected, copy addresses, delete, clear statuses, run tests, and move items in the list.
• Subscriptions – support for proxy list subscriptions (PlainText, JSON, CSV) and rules list subscriptions (AutoProxy/GFWList, SwitchyOmega) with automatic updates.
• Synchronisation and backup – synchronise settings via browser or WebDAV, full backup and restore.
• Themes – light, dark, auto (follows browser theme), and custom CSS themes.
• Keyboard shortcuts – quick switching between proxies and profiles (configurable in the browser).

🛡️ Privacy and security

• IP transmission control – in settings you can enable or disable sending your real IP to external services (disabled by default). You decide how accurate the tests should be.
• Tab‑less testing – all checks are performed via fetch requests, without opening tabs. This is faster, does not clutter history, and prevents accidental file downloads.
• The extension does not collect or transmit any data – the only external requests are to IP services (only if you allow them).
• Open source code – you can always review the code on GitHub.

🆕 What's new in version 1.0.2

• "Enable direct IP detection" setting – disabled by default for maximum privacy.
• New status ❔ – "IP obtained but page not loaded". Displayed separately from indirect success and does not affect the rating.
• Tests now run without opening tabs – faster and more private.
• Improved indirect success logic – now more accurate when direct IP detection is enabled/disabled.
• Fixed test timer – long checks (hundreds of proxies) are no longer interrupted prematurely.
• Numerous optimisations and fixes – compilation errors resolved, duplicates removed, performance improved.

🌍 Supported languages

The extension is fully translated into 24 languages, including Russian, English, German, French, Spanish, Chinese, and many others.



📦 Installation and usage

1. Install the extension from the Firefox store.
2. Add your proxy servers (tab "Proxy Servers").
3. Configure rules or profiles if needed.
4. Run testing to evaluate proxy quality.
5. Enjoy automatic proxy switching for the sites you need!

🔗 Useful links

• Source code on GitHub
• Privacy Policy
• Report an issue or suggest an idea

ProxyMust is a fork of SmartProxy, with respect to the original author Salar Khalilzadeh. Extended and improved for maximum convenience.