Google Lighthouse
Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.
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Chrome Mask
Makes Firefox wear a mask to look like Chrome to websites that block Firefox otherwise.
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My IP Hider VPN
My IP Hider VPN is number one tool for hiding your IP and unblocking any web site! If your Firefox version is less then 55 please install older My IP Hider VPN from "Version History" (https://goo.gl/7ZQQjZ)
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Lightning Autofill
The most popular autofill extension, boosting productivity since 2010.
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JavaScript Toggle On and Off (WebExtension)
Toggle JavaScript engine on and off the easy way
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javascript
add javascript that will run on this domain. back up your scripts in the options area (shortcut there by clicking the "JS" letters in the bottom right)
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Fake Filler
A form filler that fills all form inputs (textboxes, textareas, radio buttons, dropdowns, etc.) with fake and randomly generated data. The purpose of this extension is to help developers and testers test forms quickly and easily.
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Flag Cookies
A cookie and browser storage data manager on steroids to mark, 'flag', and manage cookies using rulesets.
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Simulateur mobile
Simulateur de smartphone sur ordinateur très réaliste avec plusieurs modèles disponibles pour tester son site mobile.
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Header Editor
Manage browser's requests, include modify the request headers and response headers, redirect requests, cancel requests
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Allow CORS: Access-Control-Allow-Origin
Easily add (Access-Control-Allow-Origin: *) rule to the response header.
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Proxy Toggle
Toggle between direct connection and a single proxy server via a toolbar icon.
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IP Address and Domain Information
The Ultimate online investigation tool! See detailed information about every IP Address, Domain Name and Provider.
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Modify Header Value
Add, modify or remove a header for any request on desired domains.
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