User Agent Switcher, URL sniffer

Name: User Agent Switcher, URL sniffer
Rating: 4.303944315545244 (431 reviews)
Author: Smart Software

This extension can switch the user agent of a browser. and it allows you to find all HTTP URLs.

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The User Agent Switcher & URL Sniffer Chrome extension enables users to easily switch their browser's user agent, allowing access to websites that require different browsers or versions. This powerful tool mimics other browsers to bypass access restrictions set by websites, making it an essential utility for web developers and power users.

Additionally, the extension features a URL sniffer that captures all HTTP URLs, displaying detailed logs including request type, method, URL, and original HTTP headers. Users can manage, add, and edit user agent lists, apply filters and URL patterns, and easily export or import their settings. Compatible with Chrome 18 and above, this extension offers a seamless experience for users needing enhanced browser compatibility and HTTP URL monitoring.

Extension Developer Tools Privacy & Security Productivity

By:

Users:

Rating:

Version:

0.9.4.3 Last updated: 2024-09-24

Creation date:

2020-12-01

Risk:

Permissions:

storage
webRequest
declarativeNetRequest

Host permissions:

<all_urls>

Size:

116.00KB

Email:

jj*****@gmail.com

URLs:

Full description:

Source:

Chrome Web Store

Data ingested on:

2025-07-11

Ranking

# 2,390 ▲ 25

Other rankings

#205 in Workflow & Planning ▲ 2 #18 in agent keyword 62 ▼ 2 #150 in software keyword 52 ▼ 14

User reviews

This extension is praised for its advanced and flexible user agent switching features, including support for regex and per-tab/domain control, making it valuable for research and testing. However, multiple users report an outdated user agent list causing website errors and incompatibilities. The UI is somewhat confusing regarding filter status and active user agents. Additionally, it does not spoof some browser identifiers completely, limiting effectiveness on certain websites. Despite these drawbacks, its feature richness and URL sniffing utility make it a favored choice among many users.

Pros

Offers rich and flexible configuration options allowing advanced user agent settings and regex matching.
Supports per-domain and per-tab user agent switching, providing granular control.
Useful for research and testing due to its comprehensive feature set.
Enables non-standard user agent string usage, helpful for spoofing and hiding identity.
Provides URL sniffing capabilities appreciated by some users.

Cons

User agent list appears outdated, leading to compatibility issues with modern websites and incorrect browser detection warnings.
Lacks intuitive user interface cues, making it difficult to know when filters are applied or which user agent is currently active.
Does not fully spoof all browser identifiers, such as navigator.appName and User-Agent Client Hints, causing some services to reject the spoofing.
Some users experienced functionality failures on popular platforms like Facebook, Instagram, and certain video streaming services.
Limited or unclear logging capability and occasional confusion around applying filters versus manual settings.

Recent reviews

Estensione super completa!

Da*****, 2025-04-02

does not work on facebook

Su*****, 2024-10-01

Kind of a train wreck, but it does allow you to set 'nonstandard' user agent strings, which is very useful for...research. I had to use the 'pattern' feature, it wouldn't work without. Your mileage may vary.

Ga*****, 2024-09-25

View all user reviews ›

Extension safety

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

User Agent Switcher, URL sniffer 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

Risk likelihood measures the probability that a Chrome extension may turn malicious. This is determined by the publisher and the Chrome extension reputation on Chrome Web Store, the amount of time the Chrome extension has been around, and other signals about the Chrome extension. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Chrome extension.

User Agent Switcher, URL sniffer has earned a good reputation and can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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