Spoof websites trying to gather information about your web navigation—like your browser type and operating system—to deliver distinct content you may not want.
- By:
- Ray
- Daily users:
- 89,967+ -81
- Rating:
- 4.11 (737)
1 new ratings
- Version:
- 0.5.0 Last updated: 2023-04-26
- Version code:
- 5554345
- Creation date:
- 2017-09-13
- Risk:
- High risk impact Low risk likelihood
- Permissions:
- storage
- <all_urls>
- webNavigation
- webRequest
- webRequestBlocking
- contextMenus
- storage
- Size:
- 771.24K
- URLs:
- Website
- Full description:
- See detailed description
- Source:
- Firefox Browser Add-ons
- Updated:
- a day ago
Ranking
# 225 ▼ 1
Other platforms
User reviews
Pros
- Provides many pre-populated user agent presets.
- Allows changing user agent strings to access blocked content.
- Can be useful for tasks like downloading Windows ISO files on Linux.
- Apparently capable of switching user agents effectively when properly configured.
Cons
- Breaks Cloudflare's captcha verification system, causing access issues on many sites.
- Confusing and unintuitive user interface, making it difficult to use.
- Requires manual changing of user agent frequently, lacks automatic or persistent settings.
- Lack of recent updates; appears abandoned or unsupported.
- Whitelist and blacklist modes are confusing and not user-friendly.
Recent reviews
by Valerie, 2025-05-12
It doesn't work.
by soadfan, 2025-05-07
This doesn't work. I have to manually change the user agent on every startup or time interval. I don't need a data thieving, resource wasting, pretend add-on for that. There is a "Random User-Agent (Switcher)" that works perfectly and is very simple to set up.
by Firefox user 14347746, 2025-05-03
Extension safety
Risk impact
User-Agent Switcher and Manager requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk impact analysis details
- Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood
User-Agent Switcher and Manager has earned a fairly good reputation and likely can be trusted.
Risk likelihood analysis details
- Low This extension was updated more than 6 months ago. Older versions are more likely to be stable and safe.
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Upgrade to see full risk analysis details
Compare add-ons
- Compare User-Agent Switcher and Manager vs User-Agent Switcher
- Compare User-Agent Switcher and Manager vs User-Agent Switcher
- Compare User-Agent Switcher and Manager vs User-Agent Switcher PRO
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