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Highlights

  • Added a modern shared-result image that follows the selected frontend design, includes client and connection details, and can be explicitly selected with a style query parameter. #833
  • Added support for SERVER_LIST_URL in frontend Docker mode without requiring a mounted /servers.json; this also works with the classic frontend. #849
  • Corrected Safari upload testing so modern Safari browsers use the standard upload path rather than the legacy IE11 workaround, improving accuracy and stability. #847
  • Prevented stability-test ping values from freezing during long-running tests. #851

Fixes and documentation

  • Constrained shared result images on mobile displays. #850
  • Corrected the frontend Docker port-binding example in the documentation. #839

Compatibility

No breaking changes or migration steps are required.

Thanks to contributors

Thank you to @BKPepe, @darkgsl, @marcel1702, and everyone else who contributed to this release.

Full changelog

https://github.com/librespeed/speedtest/compare/v6.2.1...v6.3.0

Source: README.md, updated 2026-09-12