Android 拡張機能を使用するには、Android 版 Firefox が必要です。デスクトップ版 Firefox のアドオンを探すには、デスクトップサイト にアクセスしてください。
Map every element's z-index on the current page and visualize the stacking order
Draw freehand notes on a persistent popup whiteboard
Minimal checklist app with progress bar and storage
Drag to measure any area on screen in pixels
Block distracting websites during scheduled time windows
Translate selected text using Google Translate API
現在のサイトにおけるサーバーの実際のIPアドレスを表示します。
Create CSS gradients with color stops and direction
Advanced text statistics with density and keyword count
Calculate MD5, SHA-1, SHA-256 and SHA-512 hashes of any text
Draggable pixel ruler overlay to measure elements on any page
Spy on page CSS animations and transitions in real time
Log daily expenses by category and track your spending
Extract all CSS custom properties from the current page
Transform images into base64 data URIs — drag, drop and copy instantly
Paste messy code and get it cleanly formatted instantly
Adds a button to open diffs in the diffs.dev diff viewer.
View response headers of any URL you enter or fetch
Design linear radial and conic CSS gradients visually
Rotate User-Agent automatically to mask your browser identity
Redirect blocked domains to a focus reminder page
Adds the meta viewport tag only to sites that don't have it.
View request and response headers for the current tab in real time
Flip between Base64, URL and HTML encoding instantly
View, edit and delete localStorage and sessionStorage for any page
