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    The Spanner
    Web security blog

    Made by Gareth Heyes
    Follow me on Twitter: @garethheyes

    Javascript for hackers!

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    PHP CSSReg

    By Gareth Heyes (@hackvertor)

    Published 14 years 9 months ago • Last updated March 22, 2025 • ⏱️ < 1 min read

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    Just a quick post to mention the excellent work by Norman Hippert aka @thewildcat, he successfully converted my Javascript based CSSReg into PHP. I was meaning to do this but never found the time so it's pretty awesome that not only did thewildcat convert the code but found some nice bugs in my code and fixed them. Great work Norman thanks very much!

    PHP CSSReg demo

    PHP CSSReg source code *

    • Note image proxying is missing, you must either use a image proxy or read the image files using a php script to prevent CSRF via graphics.

    In case you don't know CSSReg converts a user supplied stylesheet and filters it removing any dangerous parts.

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