CSS Peeper

Name: CSS Peeper
Rating: 1 (5 reviews)
Author: CSS Peeper

By: CSS Peeper

Extract CSS and build beautiful styleguides.

This add-on was removed from Firefox Add-ons Store on 2025-09-28

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Features & Capabilities

CSS Peeper is a Chrome extension designed especially for designers who want quick access to website CSS styles. It allows users to extract CSS details such as line-height, fonts, button sizes, colors, and assets effortlessly without digging through complex code. With a user-friendly interface, CSS Peeper helps you build beautiful styleguides and inspect hidden CSS styles on any website, streamlining your design workflow and boosting productivity. Whether you are curious about specific design elements or want to gather style information fast, CSS Peeper is the ultimate tool to satisfy your needs.

User Growth & Download Statistics

Add-on Design Developer Tools

By:

Daily users:

Rating:

Version:

0.5.6 Last updated: 2025-02-17

Version code:

5894589

Creation date:

2025-02-17

Risk:

Permissions:

activeTab
scripting
https://fonts.googleapis.com/

Size:

285.77KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2025-09-28

Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

CSS Peeper

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/css-peeper/

User Reviews

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

by Ka*****, 2025-09-23

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 hello@csspeeper.com

by CS*****, 2025-09-23

works great with chrome, i use zen as my main and it doesn't work at all won't pop up, such a shame. i have to go to brave just to use it for something real quick save it and switch back. plzzzzzzzzzzzzz fix,

by Br*****, 2025-04-30

View all user reviews ›

Is CSS Peeper Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

CSS Peeper requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Request access to the following domains: googleapis.com

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

CSS Peeper may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.