Mijn favoriete add-ons
by Edwin Martin
About this Collection
My favorite add-ons
23 Add-ons in this Collection
Firebug by Joe Hewitt, Jan Odvarko, others
The Web Developer extension adds various web developer tools to the browser.
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
Use tamperdata to view and modify HTTP/HTTPS headers and post parameters...
View HTTP headers of a page and while browsing.
Obsolete as of FF 57, will leave here for users who have not "upgraded" to 57.
HTML Validator is a Mozilla extension that adds HTML validation inside Firefox, Mozilla. The number of errors of a HTML page is seen on the form of an icon
For Firefox 56, use 0.974 (see all versions below).
For Firefox 57, see Web Extensions.
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages.
http://yslow.org is the official open source website.
A Mozilla Firefox add-on that provides a easy way to reload the browser DNS cache.
It's commonly used by developers that uses the Hosts File to force a domain name resolution to a specific IP.
StumbleUpon is the easiest way to discover new and interesting photos, videos, web pages and more, recommended by a community of experts. Tell us what you are interested in and we recommend page after page of amazing stuff you’d never expect to see.
Tweak Network will speed up the loading of web pages and increase the maximum number of simultaneous downloads from a site Tweak Network will not be rewritten as a WebExtension and might stop working with a new Firefox release.
It adds a tab to the Page Info dialog box, which shows the cookies belonging to the current page. View Cookies will not be rewritten as a WebExtension and might stop working with a new Firefox release.
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