Support » Plugin: WebP Express » webp format not compatible for Safari (OSX)

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  • Plugin Author rosell.dk

    (@roselldk)

    WebP Express only delivers webp images to browsers that supports webp. As Safari does not support webp, Safari gets the original images (jpeg / png).

    Beware that if you are using a CDN, you should either put WebP Express into “CDN friendly mode” or make sure that the CDN can handle varied responses. Otherwise the CDN might conflate the caches, which will result in random-like responses (some images getting returned as jpeg and some as webp, even for Safari).

    Plugin Author rosell.dk

    (@roselldk)

    See also:
    https://wordpress.org/support/topic/trying-to-load-webp-in-safari-and-404ing-images/

    And check out this test page, which uses the same techniques as WebP Express does:
    http://toste.dk/rh.php

    When visiting the test-page with Safari, you should see two images with the “JPG” label over them.

    When visiting the test-page with a browser that supports webp, you should see two images with the “WEBP” label over them.

    In case you do not see two images, there is something terribly wrong, and please report! No-one has yet reported that scenario.

    Plugin Author rosell.dk

    (@roselldk)

    For others experiencing blank images in Safari:
    I have just added a Blank images in Safari? section in the FAQ

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