Item logo image for User Agent and JS Manager

User Agent and JS Manager

Item media 2 (screenshot) for User Agent and JS Manager
Item media 3 (screenshot) for User Agent and JS Manager
Item media 1 (screenshot) for User Agent and JS Manager
Item media 2 (screenshot) for User Agent and JS Manager
Item media 3 (screenshot) for User Agent and JS Manager
Item media 1 (screenshot) for User Agent and JS Manager
Item media 2 (screenshot) for User Agent and JS Manager
Item media 1 (screenshot) for User Agent and JS Manager
Item media 2 (screenshot) for User Agent and JS Manager
Item media 3 (screenshot) for User Agent and JS Manager

Overview

Advanced User-Agent switcher with per-site JavaScript and Cookie controls.

A developer tool for testing website compatibility and functionality across different environments. Instantly see how your site appears to search crawlers, social media platforms, and various browsers by switching user agents. Debug JavaScript-dependent features like form submissions and server-side rendering by toggling script execution. Configure User-Agent, JavaScript, and Cookie settings on a per-site basis with automatic persistence. Features: - Switch User-Agent to test how crawlers and different browsers view your site - Toggle JavaScript to debug form-based workflows and progressive enhancement - Block outgoing cookies for specific sites to test privacy and authentication scenarios - Configure settings individually for each website - Settings automatically apply when you revisit sites Common Uses: - Verify how search crawlers and social platforms see your pages - Test form submissions and server-side rendering without JavaScript - Debug graceful degradation in JavaScript-optional sites - Manage privacy settings for specific domains Privacy: All data is stored locally on your device. No browsing information is collected or transmitted. Permissions: - DeclarativeNetRequest: Modifies HTTP headers - ContentSettings: Controls JavaScript execution - Storage: Saves your preferences

Details

  • Version
    1.0.3
  • Updated
    December 3, 2025
  • Offered by
    Alex Shand
  • Size
    36.04KiB
  • Languages
    English
  • Developer
    Email
    alex@inav.ca
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization
The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

Related

User-Agent Switcher: Device Identity Simulator

4.0

Simulate different device fingerprints for testing purposes

DNS Leak Test

4.9

Stay private: run a quick dns leak test, get an instant dns leak check, and confirm with a dns leak detector for confident browsing

User-Agent Switcher & Manager Pro

0.0

User-Agent switcher with Client Hints & navigator. Spoof, rotate & manage identities per-tab or per-domain with profiles.

Privacy Shield Pro

4.0

Complete privacy protection: block trackers, prevent fingerprinting, and take full control of your online privacy.

AI Shopping - Review Analyzer & Compare

4.6

Get pros/cons analysis, compare products, make smarter purchase decisions on Amazon, Airbnb, Bestbuy, Booking...

User-Agent Switcher Pro

0.0

Spoof websites tracking your browser to control or personalize web content

The Big Gift List

5.0

Easily add items to your 'The Big Gift List' lists

Change My Geolocation

5.0

Change your geolocation in two clicks (Location Guard)

Humble Steam Tags and Links

5.0

Humble Steam Tags And Links adds links to Steam pages and displays "Wishlist" and "Owned" tags for games on humblebundle.com.

User-Agent Switcher by Semalt

4.3

User-Agent Switcher by Semalt lets you change your User-Agent fast and view any site as if browsing from another browser or device.

Minute Minder: AI Agenda & Meeting Timer for Google Meet

4.5

Run Google Meet calls on time with AI agendas, live timers, and smart in-call reminders. No recording. No listening.

Advanced User-Agent

0.0

Change the user agent for specific domains or URLs.

User-Agent Switcher: Device Identity Simulator

4.0

Simulate different device fingerprints for testing purposes

DNS Leak Test

4.9

Stay private: run a quick dns leak test, get an instant dns leak check, and confirm with a dns leak detector for confident browsing

User-Agent Switcher & Manager Pro

0.0

User-Agent switcher with Client Hints & navigator. Spoof, rotate & manage identities per-tab or per-domain with profiles.

Privacy Shield Pro

4.0

Complete privacy protection: block trackers, prevent fingerprinting, and take full control of your online privacy.

AI Shopping - Review Analyzer & Compare

4.6

Get pros/cons analysis, compare products, make smarter purchase decisions on Amazon, Airbnb, Bestbuy, Booking...

User-Agent Switcher Pro

0.0

Spoof websites tracking your browser to control or personalize web content

The Big Gift List

5.0

Easily add items to your 'The Big Gift List' lists

Change My Geolocation

5.0

Change your geolocation in two clicks (Location Guard)

Google apps