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.
7,179 users
Flagfox
Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...
103,858 users
BF3 Battlelog Player Count Validator
Displays accurate player count in Battlefield 3 battlelog server list
165 users
defyFormValidation
Deactivates HTML5 form validation for testing server-side or alternative client-side (e.g. JavaScript-based) validation methods.
120 users
HTML Validator Plus
Use an online HTML checker to check your HTML code. Use a syntax checker as an HTML error checker
8 users
eIDAS QWAC Validator
This add-on shows a grey EU-flag badge at the right of the address bar, that gets coloured in case the origin of the visited site is authenticated by means of a qualified web-access certificated (QWAC) pursuant to the “eIDAS” European Regulation.
9 users
Validate Phone Number
Validate phone numbers effortlessly with our Phone Number Validation browser extension. This extension provides a seamless way to verify phone numbers, check carriers, and obtain essential details like location and phone type.
9 users
Mail Validator
Mail validator is used to validate email. Functionality to check deliver-ability,valid format, free mail, disposable mail
2 users
Email Validator
Validate emails, check deliverability, and filter out blacklists, spam traps, and complainers to reduce bounce rates.
1 user
CSS Validation Checker
The CSS Validation Checker addon for Firefox is a powerful tool for web developers and designers. It seamlessly integrates into the browser, allowing users to quickly validate their CSS code against the latest standards set by the W3C.
8 users
HTML, CSS, JS Validator
The utility checks and fixes HTML, CSS, and JavaScript errors on websites.
1 user
Validate CSS
The Firefox addon "Validate CSS" is a handy tool for web developers and designers. It allows users to quickly validate their CSS code directly within the browser, ensuring it meets industry standards and is free of errors. With its simple interface
3 users
Accessibility Validator
The Accessibility Validator Firefox add-on is an essential tool for web developers and designers committed to ensuring their websites are accessible to all users. With its comprehensive suite of accessibility checks, this add-on quickly scans web
1 user
Validate HTML
Submits the HTML of the current tab to the W3C Validator. Source submitted is from a GET request not the DOM. Written out of the need to easily validate protected directories. Not advisable for use on pages with sensitive information.
64 users
Code Editor
Powered by the Monaco Editor, it provides support for basic syntax colorization, IntelliSense, validation and Diff Editor features.
692 users
Waaila Tracking Validator
Waaila Tracking Validator is troubleshooting tool that helps you validate and test your analytics implementation.
0 users
Stylus
Redesign your favorite websites with Stylus, an actively developed and community driven userstyles manager. Easily install custom themes from popular online repositories, or create, edit, and manage your own personalized CSS stylesheets.
132,695 users
ChroPath
ChroPath helps to generate and validate selectors like relative xpath, cssSelector etc with iframe support.
2,991 users
Waaila Tracking Validator Plus
Waaila Tracking Validator is troubleshooting tool that helps you validate and test your analytics implementation.
0 users
