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Editorial Team
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Asked: 2026-06-10T17:33:05+00:00

When I resize an image with photoshop’s Save for Web, it looks different than

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When I resize an image with photoshop’s “Save for Web”, it looks different than if I convert it with ImageMagick. Is there a setting I can change in ImageMagick to get same results as Photoshop? Here is an example.

The original:

enter image description here

“Save for Web” 30.01%
vs
convert -geometry 30.01% home-button-full.png home-button-ipad.png

enter image description here
enter image description here

Enlarged so it’s easier to see the difference:

Photoshop:

enter image description here

ImageMagick:

enter image description here

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1 Answer

  1. Editorial Team

    The only immediate difference that’s discoverable are these:

    • Photoshop’s result is 76x86 pixels in size.
    • ImageMagick’s result is 76x87 pixels in size.
    • Photoshop’s number of colors used by the PNG is 378.
    • ImageMagick’s number of colors used by the PNG is 401.
    • Photoshop’s filesize for the PNG is 4.239 Bytes.
    • ImageMagick’s filesize for the PNG is 3.410 Bytes.

    I only know how to fix the first difference:

    convert orig.png -scale 76x86\! scaled-76x86.png

    (This command’s result has reduced the number of uniq colors to 358… but that’s by accident only.)

    As long as we don’t know what other sort of filtering Photoshop’s Save for Web… does apply, we have little chance to mimic its results exactly… You could try this:

    convert orig.png -scale 76x86\! -interpolate bicubic scaled-76x86.png
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