Masquerade — User-Agent Switcher
ExtensionDeveloper Tools
Overview
Switch Chrome's server-facing and per-tab JavaScript User-Agent with practical device presets.
Masquerade is a local-only Chrome extension for testing how websites respond to different browser identities. Choose practical desktop, mobile, tablet, crawler, or custom User-Agent presets. Network Override changes the User-Agent and best-effort Client Hints sent with HTTP(S) requests. Full Tab Spoof independently changes navigator.userAgent for the selected tab. The extension does not read page content or browsing history, inspect cookies, or send data to a remote service. Reload the target tab after changing a mode. Screen size, fonts, IP address, TLS behavior, and other fingerprinting signals are not changed.
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Details
- Version1.2.2
- UpdatedSeptember 5, 2026
- Size28.06KiB
- LanguagesEnglish
- Developer
Email
gnoyixiang@gmail.com - Non-traderThis 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
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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