About Page Ruler

Page Ruler is a Google Chrome extension that lets your draw out a ruler to any page and displays the width, height and position of it. It currently has over 300,000 users and is the most popular ruler extension for Chrome.

Click Here to Install Page Ruler for Google Chrome


  • Draw a ruler to any page and view the width, height and top, bottom, left and right position
  • Drag the edges of the ruler to resize it
  • Manually update the size and position of the ruler from the toolbar to make precision changes
  • Display guide lines extending from the ruler edges
  • Enable “Element Mode” to outline elements on the page as you move your mouse over them
  • Navigate through parents, children and sibling elements of any measured element
  • Localisation in over 10 different languages
Page Ruler with guides
Element Mode
Change ruler colour
Dock to bottom without guides

Contribute & Support

Page Ruler source is available on GitHub. Bug fixes or new localisations are more than welcome!

Please refer to the issue tracker to submit any bugs or feature requests.