This will generate a sprite Image by dragging and dropping Images & also measure the size of different contents on Websites.

Simple tool for measuring arbitrary parts of a page. Does not and will never contain adware.

PixelGuide enables Photoshop-like rulers and guides interface on a web page.

Simple measuring tool for web developers.

A reading aid for pages with wiiiiiiide paragraphs.

Minimal and reliable ruler for developers

A very simple ruler to check your webpage, without ads, without secrets, just a ruler.

Draw a grid view, get page dimensions in pixel (px) unit and draw a rule

Google Trusted Photographer Moderation Tool Kit. A transition alignment ruler plus grid overlay.

网站前端性能检测

Preview crop / Capture / Simple ruler

Based on ReadingLine - Acts as a reading ruler, helping to keep an eye on a line of text with a mouse.

Tool for displaying fonts & elements size

This extension measures segments on the current tab and their slopes

Remove default ruler

Displays a line to be used as a ruler for aligning items.

page css ruler;page measure tools;Get page's/element's size/margin/padding/spacing info

Adds a vertical line to forum connecting reactions with parent comment for better orientation and other minor modifications

Position the ruler and measure the objects!

Page ruler

Includes HD wallpaper images of the rapper Drakeo the Ruler on every tab background.

The ruler of the friends rainbow kingdom are very busy with her work always, She needs some rest and makeover after her heavy work