Web Components
Identify all Custom Elements used on a site.
What is Web Components?
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Summary
Web Components are a collection of standards which are working their way through the W3C. One of these specs is called Custom Elements and gives you the ability to create your own HTML elements.
The idea behind this extension is to detect pages that are using it nowadays and show an icon in the address bar when it happens.
Source code available at: https://github.com/webcomponents/chrome-webcomponents-extension
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Safety
Risk impact
Web Components may not be safe to use and it requires some risky permissions. Exercise caution when installing this extension. Review carefully before installing.
Risk likelihood
Web Components may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.
Similar extensions
Here are some Chrome extensions that are similar to Web Components: