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1,151 extensions found in Web Development

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  • KB Shortcuts

    KB Shortcuts

    Quick reference cheatsheet of browser keyboard shortcuts

    Braylen Vargas

  • Percent Enc

    Percent Enc

    URL percent-encoding tool with component and full modes

    oenyg

  • WCAG Check

    WCAG Check

    Check colour contrast ratio for WCAG AA and AAA

    Alex

  • Headers Spy

    Headers Spy

    View and search HTTP response headers for any endpoint

    Helga Focks

  • Text Minify

    Text Minify

    Minify CSS JS or HTML by removing whitespace and comments

    Briallen

  • Mesh Grad

    Mesh Grad

    Create beautiful mesh gradient backgrounds for web

    Avis Femke

  • CIDR Calc

    CIDR Calc

    IP subnet calculator with CIDR notation and host range

    Curtis Turner

  • Flexbox Gen

    Flexbox Gen

    Visual CSS flexbox generator with live preview and copy

    rutz-ronald

  • Custom API Tester

    Custom API Tester

    Send HTTP requests with custom method headers and body

    Olsen

  • Grid Builder

    Grid Builder

    Design CSS grid templates visually and copy CSS

    Olehjov

  • Grid Forge

    Grid Forge

    Visual CSS grid generator with rows columns and gaps

    Olehjov

  • Hue Build

    Hue Build

    Build and export CSS color palettes with harmony modes

    Pibibuw

  • Cookie Jar

    Cookie Jar

    Browse delete and copy cookies for the active tab domain

    GerardSpinkam

  • GP Ext

    GP Ext

    GP Ext for Firefox and Firefox Mobile

    Soybean

    3 users

  • Tourmaline Markdown

    Tourmaline Markdown

    Sharpen your thinking with Tourmaline.

    MysticSoft

    3 users

  • Nightly Network AdBlock (prototype)

    Nightly Network AdBlock (prototype)

    Blocks many ads using webRequest blocking + content-script heuristics.

    David

    3 users

  • Audio Editor - By Mr.Bear

    Audio Editor - By Mr.Bear

    Professional audio editing and recording suite for Firefox. Multi-track editing, effects (reverb, delay, chorus, EQ), podcast production, recording, mixing, and export to MP3/WAV/FLAC.

    Mr.Bear

    3 users

  • Flex Forge

    Flex Forge

    Interactive CSS flexbox code generator with preview

    rutz-ronald

  • MD Syntax

    MD Syntax

    Searchable Markdown reference card with copy support

    cocatherese

  • Expr Calc

    Expr Calc

    Calculate any math expression with history and copy

    Konstantinova

  • Card Valid

    Card Valid

    Check credit card validity detect type and issuer

    sesay.ana

  • Subnet Calc

    Subnet Calc

    Calculate subnet mask network and broadcast address

    Curtis Turner

  • Specificity

    Specificity

    Analyse CSS selector specificity scores and ranking

    Sansone Janeth

  • CSS Anim

    CSS Anim

    Generate CSS keyframe animations with visual controls

    everett

  • A11y Color

    A11y Color

    Accessibility colour contrast checker for web design

    Alex