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On macOS and other desktop systems you can override the CSS from a website and add yor preferences -- change the header font, line spacing, text colour etc.

Is there away to do this automatically per site on the iPad?

There is a question Is CSS injection possible on iPad using Safari? similar but this requires opening the page first then running a shortcut for each page. The desktop addins apply the styles by domain name so no extra user involvement.

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  • Despite your last paragraph this looks like a duplicate (the original question basically asks the same thing after all)
    – nohillside
    Aug 28, 2020 at 13:41
  • Yes but it is not answered as I explained n in the last paragraph
    – mmmmmm
    Aug 28, 2020 at 13:46
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    The key reason probably is that it can't be done, so the only answer is about to accomplish something similar. Setting a bounty for "answers which work in the background" on the original question may yield additional answers if they exist (and you surely have enough rep for this :-))
    – nohillside
    Aug 28, 2020 at 14:32
  • More details on possible solutions here: stackoverflow.com/questions/6916335/… Jul 11, 2022 at 2:12

2 Answers 2

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Automatically?

No. (at least not as of mid-2022)


If someone were to write a Safari extension*, or if Apple adds support in a future iOS version, then the answer would of course change.

*(if even possible: macOS Safari has the Cascadea extension… if doing the same thing on iOS/iPadOS were trivial, it seems that extension’s developer might have already done so)


For more background details and possible workarounds, please see the answers at: “Can I over-ride CSS with user-css on Mobile Safari?

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Yes, see the Hyperweb extension, which allows the injection of a custom CSS on any website to change its style as a free feature, and its instructions on How to inject custom CSS in iOS Safari.

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