To use these add-ons, you'll need to download Firefox.

Log in

9,521 extensions found in Web Development

Filter results
Search results
  • Time Zone Converter - Savvy Time

    Time Zone Converter - Savvy Time

    Time zone and local time converter. Compare and convert time between many locations at a time.

    Savvy Time

    642 users

  • Quick Locale Switcher

    Quick Locale Switcher

    An Extension for Firefox to easily change the language and locale.

    QuickLocaleDev

    637 users

  • Minsait eSignature Web Extension

    Minsait eSignature Web Extension

    Complemento intermediario entre una aplicación web y una aplicación nativa para realizar firmas digitales.

    Minsait - Cibersecurity

    629 users

  • Seerobots

    Seerobots

    Seerobots let's you easily see the websites Meta-Robots (index/noindex and follow/nofollow) and X-Robots configuration...

    seerobots

    625 users

  • Owl devtools

    Owl devtools

    Firefox devtools extension for Odoo Owl framework

    Odoo

    622 users

  • EE2ME

    EE2ME

    EE2ME is used to get data from easyenjaz and import to ENJAZIT, MUSANED, GCC - Gulf Health Council & Ethiodwa - Ethiopia Embassy (KSA)

    easyenjaz

    618 users

  • Le Git Graph - GitHub Git Graph

    Le Git Graph - GitHub Git Graph

    A browser extension that displays the git graph for any GitHub repository.

    scaria.dev

    617 users

  • Page Performance Test

    Page Performance Test

    Get accurate performance timing for any page with this WebExtension

    Francesco De Stefano

    614 users

  • Angular state inspector

    Angular state inspector

    Inspect State of the Angular components easily

    Ihor Klymenok

    610 users

  • OurStickys - Sticky Notes on every page

    OurStickys - Sticky Notes on every page

    Add Persistent Sticky Notes anywhere on any web page, they will reappear when you re-open the page

    Fabrizio Parrella

    609 users

  • Custom CSS

    Custom CSS

    Overwrite or inject custom CSS into website.

    Kenny Ooi

    609 users

  • JSONovich

    JSONovich

    Pretty-prints JSON content in the browser for easy, unobtrusive viewing.

    Will Elwood

    602 users

  • Temporary Email - EmailOnDeck

    Temporary Email - EmailOnDeck

    Superior Temporary Email Solutions - Extension does not track, read or view the websites you visit.

    EOD

    602 users

  • Hoverify: All-in-one extension for web developers

    Hoverify: All-in-one extension for web developers

    Master web development with an all-in-one browser extension that helps you inspect, edit, test, debug, and optimize websites faster.

    Hoverify

    597 users

  • Script Runner

    Script Runner

    Script injector for JavaScript and CSS!

    ankur1218

    596 users

  • Bitly URL Shortner

    Bitly URL Shortner

    Bitly service to convert long URLs or Links of websites to short.

    DSNet

    595 users

  • SugarMelt

    SugarMelt

    Allows you to change font/style; also adds cheats

    Lure of Chaos

    593 users

  • Vue Telescope

    Vue Telescope

    Discover Websites made with Vue.js

    NuxtJS

    590 users

  • Preact Developer Tools

    Preact Developer Tools

    Only works with Preact 10.1.0 upwards Debugging tools for Preact. This extension allows you to inspect the component hierarchy and change properties on the fly.

    Marvin Hagemeister

    590 users

  • Serpstat Website SEO Checker

    Serpstat Website SEO Checker

    Instantly check your website's SEO, analyze competitors and get advantage of powerful search analytics in one place.

    Serpstat

    588 users

  • NoCoffee

    NoCoffee

    NoCoffee vision simulator. Originally written by Aaron Leventhal for Chrome.

    Eitan Isaacson

    588 users

  • Night Mode - Dark Theme

    Night Mode - Dark Theme

    A universal dark theme. Night Mode is an extension that helps you quickly turn the screen (browser) to dark at night time. Toolbar button serves as an On & Off switch which enables you to easily and quickly turn the extension On or Off.

    Simple Inc.

    587 users

  • SnowEyes

    SnowEyes

    洞悉无形，守护无界

    Sickle

    587 users

  • Catppuccin for Web File Explorer Icons

    Catppuccin for Web File Explorer Icons

    Soothing pastel icons for file explorers on the web!

    uncenter

    583 users

  • Marker.io: Visual bug reporting

    Marker.io: Visual bug reporting

    Visual bug reporting tool: save time & report visual issues in seconds with all data your devs need.

    Marker

    582 users