Quality Assurance Tool

by logan · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

A JavaScript utility for quality assurances on webpage.

Users

−1 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#189K

#158K among extensions

Version

1.1

updated 23 Nov 2021

Users

monthly, 3 years

Latest, 16 Oct 2026: 11 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years

Latest, 16 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Quality Assurance Tool

Measure the spacing and styles between elements on webpage. Hold down Alt(Windows) / ⌥ Option (Mac) key, move the cursor and click. How to use: 1. Hold down Alt (Windows) / ⌥ Option (Mac) key，Move the mouse cursor to one element and Show the infomation of the element . 2. Hold down Alt (Windows) / ⌥ Option (Mac) key，Click and Move the mouse cursor to another element.