10 Useful Bookmarklets for Web Designers and Developers

by Tom Kenny (@tkenny)

You may not be aware of bookmarklets which are an underused tool in web designer or developer’s toolbox. A bookmarklet is a a term that merges bookmark and applet to add functionality to a web browser. They can be stored in the bookmark bar of any browser and used from there to perform useful tasks and consist primarily of Javascript code.

As Javascript is synonymous with web development, some clever developers have created some extremely helpful bookmarklets that can improve your day to day work. Here are ten of the best available.

1. Firebug Lite


All web designers and developers should be familiar with Firebug (if for some reason you’re not then go now) and Firebug Lite is a striped down version that works on all browsers. Especially useful for fixing IE issues.

Interesting fact: Firebug inspired the name for Inspect Element.

Use on this page.

2. MRI


Enter the name of any selector into the text box and click the MRI button and this bookmarklet will highlight all of those selectors on the page.

Use on this page.

3. Design


Use on this page

4. Resize Viewport

Very simple, click on the following links to resize your browser window to these common resolutions. Only works in Firefox but that’s most of you who read Inspect Element.

1024 x 768 | 1280 x 1024 | 1440 x 900 | 1680 x 1050

5. ReCSS

One of the most useful bookmarklets for development is ReCSS. It reloads the CSS file independent of the HTML which speeds up work considerably when you’re only writing CSS code.

Use on this page

6. Save to Delicious


Delicious is one of, if not the most, popular way of saving articles especially in the web design and development community. This bookmarlet provides a quick way to save the current page to Delicious. Give it a go and save this article to Delicious!

Bookmark this page on Delicious

7. Edit Current Website

Sure, you can preview edits of HTML text using Firebug or WebKit’s Web Inspector but this bookmarklet turns the whole page into a WYSIWYG editor. Of course these changes aren’t permanent and are only local to your machine but gives you a good idea of what changing content does to the page.

Edit this page!



Similar to Firebug Lite in that you can inspect elements on a page but much clearer to see what you have selected. Also seems to be quicker.

Use on this page.

9. Layout Grid Bookmarklet


Having trouble lining up elements on a page? Andy Budd’s layout grid bookmarklet will come in handy as it overlays a transparent image of a grid, complete with pixel rulers along the X and Y axis.

Use on this page.

10. Favelet Suite

The Favelet Suite bookmarklet is the Swiss Army knife of the web design bookmarklet world. It includes the following features:

  • Color List
  • Document Tree Chart
  • HTML Attribute Viewer
  • HTTP Header Viewer
  • Hidden Field Modifier
  • Javascript Object Tree
  • MODIv2
  • Mouseover DOM Inspector
  • Object Dimensions
  • Page Info
  • Remove Children
  • Resize Fonts
  • Ruler
  • Show Source
  • Style Sheet Tweak
  • Style Sheet Viewer

Use it on this page.

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by Tom Kenny

I’m a freelance web designer and front-end developer with 9 years of experience designing for the web. Follow me on Twitter here.