Timezone Spoofer
Spoof browser timezone easily
Free
Override your browser's timezone to any location worldwide. 400+ IANA timezones with instant city search, dark mode, and IP auto-detect.
Timezone Spoofer lets you override your browser's timezone to any location worldwide. Perfect for developers, QA testers, and anyone who needs to simulate different time zones.
KEY FEATURES
• 400+ IANA Timezones — complete database covering every region
• Instant Search — find timezones by city, country, region, or UTC offset (33,000+ city names indexed)
• Easy Toggle — enable/disable spoofing with one click
• Site Exclusion List — disable spoofing on specific domains
• IP Auto-detect — automatically detect timezone from your IP address
• Theme Support — Light, Dark, and System theme options
• Keyboard Navigation — navigate timezone list with arrow keys
• Tabbed Interface — clean Main and Settings tabs with category navigation
• Toast Notifications — confirmation for every action
• Per-tab Badge — see spoofing status (active, excluded, disabled) at a glance
• Multilingual — English and Russian interface
• Works everywhere — overrides timezone APIs in all frames including iframes
HOW IT WORKS
1. Click the extension icon in Safari's toolbar
2. Enable timezone spoofing with the toggle
3. Search for your desired timezone (e.g., "Tokyo", "Miami", "UTC+5")
4. Select from results — the page reloads automatically
The extension overrides JavaScript's Date and Intl.DateTimeFormat APIs to return values for your selected timezone. All data stays local in your browser.
PERFECT FOR
• Testing timezone-dependent web features
• QA validation of international applications
• Debugging date/time displays and calendars
• Simulating user experiences across the globe
• Checking timezone-specific content
PRIVACY
• No data collection or tracking
• No analytics
• All settings stored locally in your browser
• Optional IP detection uses a configurable public API (off by default)
• No personal data is transmitted
Ratings & Reviews
• New look: the popup was rebuilt on the Zero Day Labs design system — amber accent on dark glass cards, Inter and JetBrains Mono, inline icons instead of emoji. Both light and dark themes
• Faster: the popup is interactive in under 0.1 s and opens in a single frame — no resize, no theme flash, no font swap
• Main tab: one hero card with the spoofing toggle, current zone and live offset, auto-detect and current-site rows; recent zones as tiles; search with city aliases and match hints; keyboard navigation in the zone list (⌘F, arrows, Enter, Esc)
• Settings: segmented theme and language controls, re-check interval chips, geolocation API field, excluded sites
• Zero Day Labs footer with a short line about our other products
• New icon: amber globe with clock hands
The developer, Zero Day Labs FZE, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Zero Day Labs FZE
- Size
- 2.7 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 10.14 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Vladislav Starshinov