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

Log in

502 extensions found in Web Development

Filter results
Search results
  • Dark Mode Cyberpunk

    Dark Mode Cyberpunk

    Apply a dark, cyberpunk-style theme to all websites.

    namideus

    23 users

  • Instagram UnfollowerS

    Instagram UnfollowerS

    Instagram için kullanılır

    Murat Karademir

    23 users

  • StrawPage Frames

    StrawPage Frames

    The extension works only on *.straw.page websites and allows for image upload and processing.

    Konrad

    23 users

  • diffs.dev

    diffs.dev

    Adds a button to open diffs in the diffs.dev diff viewer.

    Jason Penilla

    22 users

  • AI Context Courier

    AI Context Courier

    Save and share your AI chat history from ChatGPT, Gemini, AI Studio and Deepseek with one click.

    Baha Ferchichi

    22 users

  • Meta Viewport Adder

    Meta Viewport Adder

    Adds the meta viewport tag only to sites that don't have it.

    Heinrich Lunge

    22 users

  • SOCKS5 Proxy Control for Firefox

    SOCKS5 Proxy Control for Firefox

    Fácil activación y desactivación de un proxy SOCKS5.

    w0x7ce

    22 users

  • CSS and JS Injector

    CSS and JS Injector

    Injects custom CSS and JavaScript into specified websites to change their look

    Ashutosh

    21 users

  • Discord User/Channel/Message ID all get tool

    Discord User/Channel/Message ID all get tool

    This add-on has the following features All user ID retrieval All channel ID retrieval All message ID retrieval

    chick

    21 users

  • ChatGPT Bypasser V2

    ChatGPT Bypasser V2

    Extension to Bypass ChatGPT Suspicious Activity & Much More! (Android Firefox Compatible)

    amir

    21 users

  • AI Prompt Modifier

    AI Prompt Modifier

    AI Prompt Modifier lets you easily adjust prompts on chatgpt.com for consistent and customized replies

    WindMillCode

    19 users

  • URI Splitter

    URI Splitter

    Easily and quickly edit the URL/URI from the current page

    Denilson Sá Maia

    19 users

  • ImageSlim: Image Resizer

    ImageSlim: Image Resizer

    Instantly resize and optimize images in your browser. Save storage space and improve website loading times with just a few clicks.

    Getinfotoyou

    19 users

  • Purplemonkey2

    Purplemonkey2

    Just like Violentmonkey, but with more unsafe API.

    gholk

    18 users

  • CopyToClip

    CopyToClip

    CopyToClip is allow user to copy codes snippets from Stackoverflow.

    Mohammad Farhan

    18 users

  • Multi LLM AI Chat

    Multi LLM AI Chat

    Multi LLM AI Chat lets you chat with local Ollama models and cloud AI APIs including OpenAI, Anthropic, Google Gemini, Groq, xAI (Grok), DeepSeek, OpenRouter, Perplexity, Together AI, and Zhipu AI (GLM) — plus DALL·E image generation.

    fatalv.nu

    18 users

  • Go Up

    Go Up

    This browser extension jumps to the upper directories of the current URL

    tomarin

    18 users

  • Hypothes_is_bookmarklet_Pro

    Hypothes_is_bookmarklet_Pro

    Hypothes_is_bookmarklet_Pro is an open-source Firefox addon that enables seamless web page annotation, bypassing CSP restrictions. Enjoy private & public notes on any site, overcoming bookmarklet limitations effortlessly!

    Kalino Kibruce

    18 users

  • Free Document Maker – AI Docs

    Free Document Maker – AI Docs

    Create, edit & convert PDFs, invoices, resumes & images instantly. 100% free, secure & no signup. Official Free Document Maker add-on.

    Free Document Maker

    17 users

  • Domain Age Check

    Domain Age Check

    Domain age checker is a whois tool / extension developed by Cynexium (Umar) for checking any domain's age

    Umar

    16 users

  • Network Port Scanner

    Network Port Scanner

    Scan ports and detect OS of websites in a dark glassmorphism UI.

    Sumalya Chatterjee

    16 users

  • SwaggerAuthenticator

    SwaggerAuthenticator

    Automate API-Key authentication in swagger.

    Indogermane

    16 users

  • Meta No User-Scalable

    Meta No User-Scalable

    Adds the meta viewport tag only to sites that don't have it, and disables user scalable for all sites.

    Piggy Gaming

    16 users

  • GitHub Pages 404

    GitHub Pages 404

    Provides links to Owner's Profile and GitHub Repo on a GitHub Pages 404 page.

    Harsh Narayan Jha

    15 users

  • Custom Embedded YouTube Video

    Custom Embedded YouTube Video

    Fully customize the look of embedded YouTube videos on any site. Make YouTube videos blend seamlessly with your website’s design. You can adjust elements of the YouTube player to make it unrecognizable, providing a fully tailored, integrated look.

    Zer0

    15 users