On lossless image compression

[MasterInQuestion]

    [ Quote Master ? @ CE 2024-02-14 21:30:15 UTC:
https://bugzilla.mozilla.org/show_bug.cgi?id=1711622#c17
    "better compression format such as lossless WebP instead of PNG."
<^>    Apparent misinformation.
    Under the hood they are not distinctly different. ]

    They differ, rather significantly.
    Though not fundamentally from the basic compression aspects. (all Lempel-Ziv derived)
    .
    They differ primarily in feeding what data into the compression stage: i.e. the pre-filter.

    WebP has far more advanced pre-filter compared to PNG:
    Though the whole world remains much prevalent with PNG... still.

    Lesson taught:
    What proven by mass implementation may not be reliable.