I was looking for web developer tool for firefox which aids in designing web pages especially with monitors of different resolutions. I knew about a developer toolbar provided by Microsoft for IE but I was looking for a similar extension for firefox when I stumbled upon Web Developer extension for firefox.
I just downloaded the latest version for Mozilla firefox.
A decent summary of features:
- Dynamic updating of css of a given page
- Images: show their paths, sizes, point out images with no 'alt' attributes, etc.
- All types of page info (cookies, headers, more...)
- Helpful outlining: like outlining all block elements
- Resize the browser window to various resolutions
- Validation : HTML/XHTML, css, validating of link...
- Links to specifications: css1, css2, HTML, XHTML, DOM...
- Manipulating Forms ... various utilities