Viewler

by blobbybilb · Developer Tools

FeaturedManifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

Viewport based (vh & vw) page ruler.

Users

107

+4 in 30 days

Rating

3.5 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#82K

#69K among extensions

Version

1.0

updated 14 Jun 2023

Users

monthly, 3 years

Latest, 16 Oct 2026: 107 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years

Latest, 16 Oct 2026: 2 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 Viewler

A simple page ruler that uses the viewport based units, vw and vh. It also has marks that show where the mouse is on both rulers. Demo: https://viewler.pages.dev I couldn't find any other page rulers that use vw and vh (they all use pixels) so I made this. If you have any suggestions or feedback, leave a review! And if you like it, please consider leaving a positive rating so others can find this as well!