83 matching results
Prevent your browser from connecting to 3rd party resource without user consent. Increase your privacy, security, and speed by blocking unnecessary requests.
A Firefox devtool extension for inspecting the performance of React components.
Addon for web devs. Monitor included JS, CSS and/or HTML in frames and automatically reload the host page when a change is detected in the included source. Supports inline reloading of stylesheets and frames without reloading the host page.
Blocks scripts and resources from a website with Content Security Policy.
Please note that this extension is useful for web developers only.
It allows recognition of website environments and display useful data such as credentials, ip address, database connections...etc
You can customize the default JS state (on or off), the disable behavior (by domain or by tab) and much more.
Displays the page's current resolution in a tidy box at the top right.
Requires zero permissions and completely open source.
Generate simple style guide from page's CSS.
Web developers can inspect the DOM in a simple, intuitive way - like a pine tree!
On a web page, right-click and select Fresh Dom Tree View. Then explore: click within the generated dom tree, or mouse-over within the web page.
Try out Matomo without modifying the existing website
Fast, Instantly visible, Live Preview & Live test scripts.
This extension shows information about a web page's HTML elements as you hover over them. The details are displayed in a text stripe at the top of the screen. Clicking on the text stripe will toggle it between top and bottom placement.
Firefox Webextensions - JSTools Menu
Replicated the old firebug console Next to the Dev Inspector, the console has a history and can be minimized.