I’d like to introduce the convenient tool “MeasureIt!” for measuring sizes on web pages.

This extension exists as both a Chrome extension and a Firefox add-on.

・Chrome download: Chrome ウェブストア - MeasureIt!

・Firefox download: MeasureIt :: Add-ons for Firefox

・Reference: ページ上でサイズを測る MeasureIt! -Google Chromeエクステンション- - YATのBlog

That’s all from the Gemba regarding web page measurement tools.