To use Android extensions, you'll need Firefox for Android. To explore Firefox for desktop add-ons, please visit our desktop site.

Log in

1,156 extensions found in Web Development

Filter results
Search results
  • Reading Progress

    Reading Progress

    Track and display your reading progress on any page

    ylidedex

    3 users

  • DTEK-DNEM group table widget

    DTEK-DNEM group table widget

    Helps to immediately display the required tables with data in tabs and saves the selected tab, eliminating the need to enter multiple drop-down lists for filtering

    Deltorowebstudio

    3 users

  • Kanban

    Kanban

    Mini kanban board in your browser with drag and drop

    DiasiDrisov

  • Weekly Planner

    Weekly Planner

    Add tasks to days of the week and track completion

    Afifa Ivor

  • ColoPale

    ColoPale

    Generate harmonious color palettes from any seed color

    Pibibuw

  • Keyframe

    Keyframe

    CSS @keyframes animation builder with live preview

    everett

  • Palette Forge

    Palette Forge

    Create complementary analogous and triadic color schemes

    Pibibuw

  • Tally

    Tally

    Multiple named tally counters with increment and reset

    swaswan

  • CC Check

    CC Check

    Credit card number validator with Luhn check and type

    sesay.ana

  • Flight Plan

    Flight Plan

    Structured checklist with progress bar for any migration

    Gerasimov

  • CSS Tokens

    CSS Tokens

    List every CSS variable and its resolved value from the page

    Helletech

  • Web Crypto API Wrap

    Web Crypto API Wrap

    Compute cryptographic hashes using the Web Crypto API

    Imar

  • Flappy Bear Game - By Mr.Bear

    Flappy Bear Game - By Mr.Bear

    A fun Flappy Bird-style game featuring a bear collecting honeycombs!

    Mr.Bear

    3 users

  • JSON to CSV

    JSON to CSV

    Transform JSON data arrays into downloadable CSV files

    KnoxMarotto

  • PostPro AI - Grow on LinkedIn!

    PostPro AI - Grow on LinkedIn!

    Predict LinkedIn post virality and enhance your content before publishing. AI-powered analysis for better engagement and reach. Grow your LinkedIn presence with AI-powered content intelligence.

    Sumanth

    3 users

  • Domain Age Finder Google SERP

    Domain Age Finder Google SERP

    Find & highlight domains under 4 years old on Google SERP for SEO analysis.This extension enhances your Google search experience by providing domain age information directly on the search results page.

    Semantic Pen

    3 users

  • Home Loan

    Home Loan

    Quick mortgage calculator with amortisation summary

    Shenit

  • Brand Palette

    Brand Palette

    Build a full brand color palette with semantic names

    norakrfjy

  • Minify Code

    Minify Code

    Strip whitespace and comments from CSS JS and HTML code

    Briallen

  • CSS Spec

    CSS Spec

    Calculate CSS specificity for any selector instantly

    Sansone Janeth

  • Cron Helper

    Cron Helper

    Create and decode cron schedule expressions fast

    Tilaruc Luna

  • Preset Grads

    Preset Grads

    50 hand-picked CSS gradients ready to copy and use

    Damir Davisvo

  • HTTP Codes

    HTTP Codes

    Search HTTP status codes with descriptions and classes

    Inocencio Máedóc

  • Status Ref

    Status Ref

    Quick HTTP status code reference with search filter

    Inocencio Máedóc

  • BMI Calc

    BMI Calc

    Calculate Body Mass Index with category and ideal weight

    Jemima