Default compression levels

  • Resolved wpnpc420

    (@wpnpc420)


    1 month, 1 week ago

    Hi,

    I see that the “Optimal” (default) conversion setting has a 85% compression rate for WEBP, but I can’t seem to find what compression percentage there is for AVIF files when selecting “Optimal”.

    Could you please give me this information? I’d like to know the percentage to see once I buy the Pro version, which conversion strategy I’ll choose.

    Also, will it maybe be possible in the future to set a custom compression rate WEBP and AVIF conversions? I’d like to be able to play around and tweak the percentages to best suit my clients needs depending on the graphs in this interesting article.

    Thanks in advance for your help!

Viewing 2 replies - 1 through 2 (of 2 total)
  • Plugin Author Mateusz Gbiorczyk

    (@mateuszgbiorczyk)

    Hi @wpnpc420,

    Thank you for your message.

    Quality 85% applies to converting to WebP format using the Gd or Imagick library. In the PRO version, images are not converted to AVIF format by the PHP library, but by our remote servers. We have special tools there to convert images to AVIF format. So the quality given in percentages is not a reference point there.

    Our observations show that images in AVIF format are of better quality than images in WebP format, using the same quality levels. Additionally, the weight of AVIF files is about 50% smaller than WebP files.

    We recommend using the default image optimization strategy. I do not entirely agree that the percentages in such an article are completely correct. They make sense if you were saving files in a graphics program and choosing different levels for different formats.

    Best,
    Mateusz

    Thread Starter wpnpc420

    (@wpnpc420)

    Thanks for all those details!

Viewing 2 replies - 1 through 2 (of 2 total)
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