Spoof your browser timezone
Spoof Timezone Next changes the browser timezone exposed via Date and Intl. Set a fixed or random IANA timezone and limit it to specific sites.
Overrides getTimezoneOffset, Intl.DateTimeFormat, resolvedOptions, and common Date formatting methods so pages read the timezone you chose — not the system default.
Pick any IANA zone (for example Europe/London) and keep it stable across tabs while you test locale-sensitive flows.
Assign a new timezone on each page load when you want to reduce simple timezone fingerprinting during casual browsing.
Enable or disable spoofing per hostname from the popup. Scope it to all sites, a whitelist, or a blacklist.
⌘/Ctrl+Shift+T toggles spoofing for the current site so you can compare real vs spoofed behavior quickly.
Preferences stay in chrome.storage.local with no analytics. Refresh pages after changes so scripts re-read the spoofed zone.
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