Simple Translate
Quickly translate selected or typed text on web pages. Supports Google Translate and DeepL API.
273,899 users
JavaScript Errors Notifier
Notifies JavaScript errors by icon in toolbar bar or notification popup GitHub → https://goo.gl/RBcFK8 Test page → https://goo.gl/IEXS2y
314 users
Dogcheck from Undertale as error pages
Replaces all error pages with dogcheck from Undertale
16 users
Web Archives
View archived and cached versions of web pages on various search engines, such as the Wayback Machine and Archive․is.
66,402 users
Gesturefy
Navigate, operate, and browse faster with mouse gestures! A customizable mouse gesture add-on with a variety of different commands.
84,950 users
Download Manager (S3)
View and manage downloads from a tidy status bar.
56,831 users
HTML Tag Error Checker
Check the HTML start and end tags for problems.
60 users
PocketTube: Youtube Subscription Manager
The best way to group your subscriptions Using this simple extension you can create collections that seamlessly fit into YouTube's layout.
20,532 users
Twitch Error AutoRefresher
This extension will automatically refresh twitch stream whenever any error occurs.
737 users
404 Bookmarks
With this extension you can find expired bookmarks and remove them easily. You can find all kinds of broken bookmarks, like pages that return 404 (Page not found) or other HTTP errors.
2,358 users
Error 404 Wayback Machine
Checks every 404 pages. If an archive exists in archive.org, a banner is displayed to open this archive.
207 users
Error indicator
Provides common place for reporting errors.
51 users
SEOInfo
Shows SEO issues as you navigate pages. Displays performance data, redirects, structured data and errors for HTML pages. Save to Excel.
288 users
ClearURLs
Removes tracking elements from URLs
524,038 users
Html Validator
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.
6,879 users
Narrow Page
Adjust the width of your webpages with a shortcut.
21 users
Joseph Joestar errors
Jojo reacts to browser errors
10 users
API Error Logger
Monitors and logs HTTP API errors (4xx/5xx status codes) across web pages. Features site-specific toggle, console logging control, error filtering by status code, and JSON export. Displays error count in toolbar badge with color-coded severity.
2 users
UOA SSO Fixer
Automatically fixes the Auckland SSO error page by removing the error code at the end of the url.
5 users
Wayback Machine
Welcome to the Official Internet Archive Wayback Machine Browser Extension! Go back in time to see how a website has changed through the history of the Web. Save websites, view missing 404 Not Found pages, or read archived books & papers.
35,820 users
SEO-tools
SEO-tools - information about domains, site audit for SEO errors, as well as technical audit of any page. Over 100 online services
36 users
1 user
Bookmarks clean up
Find and remove duplicated bookmarks manually and in batches, get rid of broken bookmark links and empty folders.
8,629 users