Opera Dragonfly

Opera Dragonfly

Opera Dragonfly is a developer tools suite integrated into the Opera web browser. It allows web developers to debug and edit CSS, HTML, and JavaScript on live web pages to test changes without reloading the whole page.
Opera Dragonfly image
debugging web-development css html javascript

Opera Dragonfly: Developer Tools Suite

Debug and edit CSS, HTML, and JavaScript on live web pages to test changes without reloading the whole page, integrated into the Opera web browser.

What is Opera Dragonfly?

Opera Dragonfly is an integrated developer tools suite included in the Opera web browser. It provides web developers a set of tools to assist with debugging, editing, and analyzing web pages.

Some key features of Opera Dragonfly include:

  • Editing CSS, HTML, and JavaScript on live web pages to instantly see the effects of changes without needing to reload the whole page
  • A DOM inspector and CSS inspector for analyzing and modifying a site's document structure and styles
  • A network traffic analyzer to monitorrequests and responses
  • JavaScript debugging with breakpoints and variable monitoring
  • Device simulation to see how pages render on different devices and screen sizes
  • Frames mode to visualize and interact with iframes and framesets
  • A command line API for controlling debugging features
  • Color picker, validator, and other utilities

Overall, Opera Dragonfly aims to provide web developers a versatile toolset alongside the browser to simplify many common web development tasks such as tweaking CSS, visualizing DOM structure, or diagnosing JavaScript issues.

Opera Dragonfly Features

Features

  1. Integrated developer tools
  2. Edit CSS, HTML and JavaScript on live pages
  3. Inspect and monitor network requests
  4. Debug JavaScript code
  5. Device emulation
  6. Screenshot tool
  7. Console for executing JavaScript
  8. Code snippets library

Pricing

  • Free
  • Open Source

Pros

Integrated into Opera browser

Lightweight and fast

Real-time editing without page reloads

Good for quick testing and prototyping

Free and open source

Cons

Only available in Opera browser

Limited features compared to other developer tools

No support for extensions or add-ons

Lacks some advanced developer features


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