GeoSpoof version history - 25 versions
GeoSpoof by Anthony Sgro
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 1.19.8
Released May 27, 2026 - 568.68 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Older versions
Version 1.19.7
Released May 27, 2026 - 568.69 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.19.6
Released May 27, 2026 - 568.68 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.19.5
Released May 26, 2026 - 568.69 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.19.4
Released May 26, 2026 - 568.38 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.19.3
Released May 20, 2026 - 568.24 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.19.2
Released May 20, 2026 - 564.23 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.19.1
Released May 16, 2026 - 555.04 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.19.0
Released May 9, 2026 - 522.9 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.18.4
Released May 6, 2026 - 517.78 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.18.3
Released May 5, 2026 - 517.79 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.18.2
Released May 2, 2026 - 517.61 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.18.0
Released May 2, 2026 - 517.63 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.17.16
Released May 1, 2026 - 130.52 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.17.15
Released Apr 30, 2026 - 130.41 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.17.13
Released Apr 30, 2026 - 129.28 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.17.12
Released Apr 30, 2026 - 129.09 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.17.11
Released Mar 25, 2026 - 128.67 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.17.8
Released Mar 24, 2026 - 128.12 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.17.7
Released Mar 24, 2026 - 128.11 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
Version 1.17.6
Released Mar 24, 2026 - 128.12 KBWorks with firefox 140.0 and later, android 140.0 and laterSource code released under MIT License
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
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