GeoSpoof version history - 13 versions
GeoSpoof by Anthony Sgro
GeoSpoof version history - 13 versions
Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.
Latest version
Version 1.14.0
Released Mar 16, 2026 - 122.76 KBWorks with firefox 140.0 and later, android 140.0 and laterv1.14.0
Anti-Fingerprinting- Override
Temporal.NowAPIs (timeZoneId,plainDateTimeISO,plainDateISO,plainTimeISO,zonedDateTimeISO) - Fix timezone offset hash split — all Date APIs now derive from a single resolution path per engine
- Use browser's native IANA tzdata via
Intl.DateTimeFormatinstead of custom offset arithmetic - Fix Date constructor epoch for historical sub-minute LMT offsets
- Harden prototype detection resistance (method shorthand wrapping, stack trace cleanup, synchronous iframe patching)
- Strip console output from production builds (fixes extension name leak)
Internal- Modularize injected script into 15 ES modules (still bundled as single IIFE)
- Expanded property-based test suite for fingerprint consistency
Other- Lower minimum Firefox version to 140
- Add Waterfox build script and Chrome Web Store assets
Source code released under MIT License
- Override
Older versions
Version 1.13.0
Released Mar 13, 2026 - 121.74 KBWorks with firefox 142.0 and later, android 142.0 and laterv1.13.0
- Internal build system improvements to support cross-browser compatibility. No user-facing changes for FirefoxSource code released under MIT License
Version 1.12.0
Released Mar 13, 2026 - 121.71 KBWorks with firefox 142.0 and later, android 142.0 and laterv1.12.0 — Manifest V3 Migration- Migrated to Manifest V3 for Firefox 142+. No changes to functionality or permissions prompts.
Source code released under MIT License
Version 1.11.2
Released Mar 12, 2026 - 121.39 KBWorks with firefox 142.0 and later, android 142.0 and laterv1.11.2
- XPI builds now available on GitHub Releases for sideloading on Gecko-based browsers (LibreWolf, Waterfox, Floorp, Pale Moon)
- Added automated release workflow for publishing .xpi and source bundles on version tags
- Updated README with sideloading installation instructionsSource code released under MIT License
Version 1.11.1
Released Mar 12, 2026 - 121.39 KBWorks with firefox 142.0 and later, android 142.0 and laterv1.11.1 - fix: close Date API fingerprinting gaps (toDateString, toString, toTimeString)
- Add toDateString override to prevent timezone leak near midnight UTC
- Rewrite toString/toTimeString to produce Firefox-native GMT±HHMM formatSource code released under MIT License
Version 1.11.0
Released Mar 11, 2026 - 121.14 KBWorks with firefox 142.0 and later, android 142.0 and laterv1.11.0
New Features- VPN Region Sync — New "Sync with VPN" toggle that detects your public IP, geolocates your VPN exit region, and sets your spoofed location to match. One click, no manual coordinates needed.
- Re-sync — After syncing, a Re-sync button lets you update your spoofed location if you switch VPN servers.
- Info tooltip — ⓘ icon next to the VPN sync toggle explains that it's a one-time sync (not auto-updating) and that Re-sync is needed after changing VPN servers.
- Clear location — New × button on the current location display to quickly clear your spoofed location.
Improvements- Settings deferral hardening — Geolocation and permissions queries are now deferred until settings arrive from the background script, preventing real location leaks on slow startups.
Documentation- Rewrote the Development section in README with a clear "two terminals" workflow and a scripts reference table.
- Added
package:sourceto the scripts table. - Updated Android testing instructions.
- Updated Privacy Policy with VPN sync data disclosure (ipify + FreeIPAPI).
Housekeeping- Removed unused
build:ext/zipscript (redundant withpackage).
Source code released under MIT License
Version 1.10.0
Released Mar 10, 2026 - 118.07 KBWorks with firefox 142.0 and later, android 142.0 and laterv1.10.0
Bug Fixes- Fixed false orange "!" badge appearing on nearly every page load due to a race condition between the background script and content script initialization
- Badge now retries injection checks with backoff (500ms, 1s, 2s) instead of failing immediately
- Badge automatically recovers to green "✓" when the content script confirms it's active
- Popup injection warning now uses a live PING check instead of reading potentially stale badge text, reducing false warnings on SPA navigations (e.g., YouTube)
Source code released under MIT License
Version 1.9.0
Released Mar 9, 2026 - 117.93 KBWorks with firefox 142.0 and later, android 142.0 and laterv1.9.0
- Android support — GeoSpoof now works on Firefox for Android (120+)
- Responsive popup UI that adapts to mobile screen sizes
- Search results dropdown now opens above the input, improving usability on both desktop and mobile
- Integrated web-ext tooling for building, linting, and packaging
- Note: WebRTC protection toggle is visible on Android but may not be functional due to some platform API limitationsSource code released under MIT License
Version 1.8.0
Released Mar 8, 2026 - 118.15 KBWorks with firefox 142.0 and laterv1.8.0
Changed
- Details tab now shows complete list of overridden APIs grouped by Geolocation, Timezone, and WebRTC
- README rewritten to focus on what APIs get spoofed and how protection works
- Added links to Nominatim and browser-geo-tz in README and privacy policySource code released under MIT License
Version 1.7.0
Released Mar 8, 2026 - 118.06 KBWorks with firefox 142.0 and laterv1.7.0
Added
- Timezone resolution using browser-geo-tz geographic boundary data, replacing the GeoNames API
- Longitude-based fallback when timezone data can't be loaded
Removed
- GeoNames API dependency and free-tier account requirement
Improved
- Timezone lookup reliability — no more rate limiting or API downtime issues
- Privacy policy and README updated to reflect new timezone data sourceSource code released under MIT License
Version 1.6.0
Released Mar 8, 2026 - 109.38 KBWorks with firefox 142.0 and laterv1.6.0:
- Just a new icon :)Source code released under MIT License
Version 1.5.0
Released Mar 8, 2026 - 306.76 KBWorks with firefox 142.0 and laterv1.5.0
New: Permissions API Spoofing
- navigator.permissions.query() now returns "granted" for geolocation when spoofing is active, closing a fingerprinting gap where websites could detect spoofed location by checking the permission state.
- Non-geolocation permission queries and all queries when spoofing is disabled pass through to the browser normally.
- The spoofed PermissionStatus object matches the real browser API surface (read-only state, EventTarget support).
- No additional browser permissions required.
Fixes
- Fixed popup Details view not rendering line breaks in the Overridden APIs and other detail sections.
- Package script now auto-formats manifest.json after build.Source code released under MIT License
Version 1.4.0
Released Mar 2, 2026 - 306.57 KBWorks with firefox 142.0 and laterv1.4.0 — Reliability & correctness improvements
Fixed timezone spoofing for regions that don't observe DST (e.g. Asia/Tokyo, America/Phoenix). Offsets are now resolved using the browser's Intl API instead of heuristics.
Fixed a race condition where geolocation overrides could be installed after page scripts had already run, briefly exposing your real location.
Fixed async message handling to use Firefox's native Promise-based pattern, improving reliability of settings delivery between components.
Internal settings like your GeoNames username are no longer sent to content scripts — only the fields needed for spoofing are broadcast.
Build system now automatically syncs the version between package.json and manifest.json.Source code released under MIT License