Remove parts of the page you don't wish to see.
Move a part of the page to a different location.
Change the style and format of page elements.
Modify all the links on the page using a regular expression.
Insert your own HTML code.
Clean up unwanted banners and surrounding fluff, especially prior to printing a page
See how the page is created, block by block
View the source code of one or more elements
Firebug integrates with Firefox to put a wealth of web development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page.
Screengrab! is an extension for Firefox that makes it easy to save a web-page as an image. With it, you can save anything that you can see in a browser window - from a small selection, to a complete page.
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
Displays formatted and color-coded source and optional CSS information for each element.
You can see exactly which CSS rules match for an element. The rules are displayed including file name and line number.
Source charting is a totally new and innovative way to look at source code.
The Web Developer extension for Firefox and Mozilla. The Web Developer extension adds a menu and a toolbar to the browser with various web developer tools.
Last Comments
Richard: Shadowbox is the best lightbox style tool I have ever used. Extremely flexible and teh way it handles mixed content...
Jonathan Neal: I just wanted to let you know that there is an alternate version that uses SWFObject instead of the jQuery sIFR...
Aaron Irizarry: Nice tool! Thanks
Brandon Cox: I like it! Very nice!!!
Fabio Seo: Very western your site ;-)) well done!
Fabio Seo: Nice font on menu. Bravo Tim ;-) Ciao from Italy
A u d e e: I love this CSS framework… just trying to make it useful to my new blog… Good point as you came out with...