🏠 New in Low Baseline Support: WEBGL_compressed_texture_etc WebGL extension
March 24, 2020
The WEBGL_compressed_texture_etc extension for WebGL 1.0 and 2.0 contexts adds many ETC2 and EAC compressed texture formats to compressedTexImage2D() and compressedTexSubImage2D().
Source features
api.WEBGL_compressed_texture_etc[mdn]