Hey!

My name is Kamil Wiśniewski, and I’m a co-owner of CSS Peeper. Together with Dawid Młynarz, we launched a new version of CSS Peeper in the Google Chrome Store at the beginning of 2025. We have not published a Firefox version of the extension. Please remove this fake copy of our work. Otherwise, we will be forced to take legal action against it.

If we decide to release our extension for Firefox, it will be announced publicly on our website, csspeeper.com.

We respect Firefox and the open-source community, and we want to provide users with the best possible experience once the official version is ready. However, we will not accept fake or misleading information about our product.

Sincerely,
Kamil Wiśniewski

I’m Dawid Młynarz, the founder and owner of CSS Peeper, (csspeeper.com). We’ve noticed this add-on in the Firefox Add-ons, and wanted to flag that this is not our official extension (which exists only on the Chrome Web Store) and misleads users by impersonating our product.

We kindly request that you remove this unauthorized add-on from the store. Please let us know if you need any proof of ownership or contact us for additional information at [email protected]

CSS Peeper has been one of my most used plugins in Chrome. I switched back to Firefox recently and tried to use it again, it somehow doesn't show any pop-up in Firefox. I've seen the other reviewer saying the same thing. Once it works again, I'll gladly use it again and change my review rating accordingly. For now, this plugin only gets one star.

it doesn't pop up anything in waterfox