Firebug

Firebug

Firebug is a web development tool that integrates with Firefox to enable web developers to debug, edit, and monitor CSS, HTML, JavaScript, and other web technologies on the fly while viewing websites. It allows inspecting and editing DOM elements, viewing network traffic, debuggi
Firebug image
debugging web-inspector dom-viewer css-editor javascript-debugger

Firebug: Debug & Edit Web Technologies

Firebug is a web development tool that integrates with Firefox to enable web developers to debug, edit, and monitor CSS, HTML, JavaScript, and other web technologies on the fly while viewing websites.

What is Firebug?

Firebug is a web development tool that integrates as an add-on with the Firefox web browser to enable web developers to more easily debug, edit, and monitor CSS, HTML, JavaScript, and other web technologies on the fly while viewing and interacting with websites.

Some key features and capabilities provided by Firebug include:

  • Inspect and edit the live DOM and CSS on the fly to see how changes affect page layout and styling in real-time
  • Debug JavaScript code through built-in debugging tools with breakpoints, watches, call stack examination, and more
  • View detailed network traffic information about page loads to identify performance bottlenecks
  • Profile JavaScript execution to find and optimize slow code
  • Use the console to test JavaScript code snippets and log diagnostic information
  • Edit and re-run JavaScript and CSS changes on the fly without having to refresh the browser page
  • View detailed information about CSS rule precedence, dimensions, margins, positioning, etc
  • Measure pixel dimensions and alignment directly on the rendered page

With these and many other features, Firebug has established itself as an essential web development tool integrated seamlessly right into the Firefox browsing environment. It facilitates rapid, iterative website debugging and enhancement, saving developers tremendous time and simplifying many aspects of client-side web development.

Firebug Features

Features

  1. In-browser web development
  2. Live HTML, CSS, and JavaScript editing
  3. JavaScript debugging
  4. Network monitoring
  5. DOM inspection
  6. Command line API
  7. Extension support

Pricing

  • Open Source

Pros

Powerful tool for web developers

Integrates seamlessly with Firefox

Enables on-the-fly debugging and editing

Free and open source

Active development community

Cons

Only works with Firefox browser

Can slow down page load times

Steep learning curve for beginners


The Best Firebug Alternatives

Top Development and Web Development and other similar apps like Firebug


HTTP Debugger icon

HTTP Debugger

An HTTP debugger is a developer tool that enables debugging, testing and inspection of HTTP requests/responses between a client and server. It provides detailed visibility into all aspects of HTTP communication including:HTTP headers like user-agent, accept types, encoding etc.Query parameters, form data and request payloadsResponse status codes, headers, cookies and...
HTTP Debugger image
HttpWatch icon

HttpWatch

HttpWatch is a feature-rich developer tool used for debugging and analyzing HTTP(S) requests made between a web browser and server. It works by capturing all HTTP traffic, allowing developers to inspect the raw requests and responses, including headers, parameters, cookies, caching, timings, and more.Some key features of HttpWatch include:Monitoring all...
HttpWatch image
Google Chrome Developer Tools icon

Google Chrome Developer Tools

Google Chrome Developer Tools are a set of web development and debugging tools integrated into the Google Chrome browser. They allow web developers and programmers to manipulate, debug, test and optimize webpages and web applications right within Chrome.Some key features of Chrome DevTools include:Inspecting and editing HTML and CSS on...
Google Chrome Developer Tools image
Live HTTP Headers (Chrome) icon

Live HTTP Headers (Chrome)

Live HTTP Headers is a free Chrome extension that provides an interactive interface for viewing all HTTP requests and responses as they happen within the browser. It works by intercepting and logging all network traffic between the browser and servers.Some key features of Live HTTP Headers include:Displays all HTTP headers...
Live HTTP Headers (Chrome) image
HttpFox icon

HttpFox

HttpFox is a useful Firefox add-on for web developers and anyone who wants to analyze and debug HTTP requests and responses. It captures all HTTP traffic between the browser and server, allowing you to inspect headers, cookies, caching information, and more.Some key features of HttpFox include:Inspecting all parts of an...
HttpFox image
HTTP Header Live icon

HTTP Header Live

HTTP Header Live is a free online web debugging tool that lets you view detailed HTTP request and response header information for any website. It works by entering a URL into the tool, clicking 'Get Headers', and it will fetch that page in the background and display the full HTTP...
HTTP Header Live image
Domsignal icon

Domsignal

Domsignal is an open-source application for monitoring websites and web applications. It provides users with the ability to track website changes, performance metrics, and uptime from one centralized dashboard.Some of the key features of Domsignal include:Website change monitoring - Get notified when there are changes to your website's content, code,...
Domsignal image
Firefox Developer Tools icon

Firefox Developer Tools

Firefox Developer Tools are an integrated development environment for web developers and programmers built into Firefox browser. They provide a number of tools to facilitate debugging, editing, and profiling of web pages and applications.Some key components of Firefox DevTools include:Page Inspector - Allows visual inspection and editing of page content...
Firefox Developer Tools image
Javascript Debugger (Venkman) icon

Javascript Debugger (Venkman)

Venkman is an open-source JavaScript debugger that was originally developed by Mozilla. It was designed to help web developers test and debug JavaScript code in web applications and web pages.Some key features of Venkman include:Setting breakpoints in JavaScript codeStepping through code line-by-line to understand execution flowInspecting and editing JavaScript objects,...
Javascript Debugger (Venkman) image
SplineTech Javascript Debugger icon

SplineTech Javascript Debugger

SplineTech Javascript Debugger is a feature-rich debugging tool designed specifically for JavaScript development. It provides powerful capabilities for inspecting, monitoring, and troubleshooting client-side JS code.With SplineTech you can set breakpoints, step through code statement by statement, examine the call stack, watch variables and expressions, and use various other debugging techniques...