Masquerade — User-Agent Switcher

Unknown author · Developer Tools

Open in Chrome Web Store

Users

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Avg rating

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Ratings

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Updated

Sep 5, 2026

Media

3 items

Description

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.

History

30d 90d 1y all

rating_count is the Chrome Web Store ratings count, not a written-review count.

Details & SEO

SEO signals

Listing completeness signals

Title length
Characters in the extension name.
32
Description length
Characters in the listing description.
718
Media assets
Screenshots and videos on the listing.
3
Has promo video
Whether the listing includes at least one video.
No
Languages
Declared language locales.
1
Developer website
Listing exposes a developer website URL.
No
Contact email
Listing exposes a contact email.
Yes
Keyword in name
Case-insensitive substring match in the name.
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Keyword in description
Case-insensitive substring match in the description.
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Keyword occurrences in description
Count of case-insensitive occurrences in the description.
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Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
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These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.