Support » Plugin: EWWW Image Optimizer » Lossless Compression in Jpegs

  • Resolved ArImages


    Hello ,

    I would like to thank the author for this great plugin. I am building a photography portfolio website where Image Quality is an important factor.
    I have one question :-

    Believe, if I perform One round of image optimisation on Jpeg images then it will be a LOSS less image compression that means Image quality will not change.

    Now if I run it for 2nd times I can see few KB has been reduced. Will this 2nd Optimisation on jpeg reduce the image quality at all ?

    Also will be grateful if you kindly suggest best settings for Lossless Image compression technique of this tool…

    Warm Regards,

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  • Plugin Author nosilver4u


    All JPG optimization is lossless. In the future, I will be working on a lossy option, but all lossy options are (and always will be) disabled by default. There aren’t many options for lossless JPG compression, as it is a pretty standard process.

    The one thing you can enable is metadata stripping. Depending on the image, this can sometimes achieve significant savings. However, if keeping the EXIF information is important to you, then do NOT enable stripping metadata.

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