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Web3D Survey : WebGL 2 : WEBGL_compressed_texture_s3tc_srgb

More details: Developer Docs (MDN) Specification (Khronos)

Overall Support

80%

Platform Support
PlatformSupport
Android19.34%
Chromium OS85.76%
iOS28.9%
Linux91.74%
Mac OS77.98%
Windows99.8%