ViewportSmith

by darlammosa@gmail.com · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

Resize browser windows to test responsive layouts. Add custom resolutions, keyboard shortcuts & more by AIO.com.ai

Users

−2 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#225K

#188K among extensions

Version

1.0.0

updated 2 Nov 2025

Users

monthly, 12 months

Latest, 16 Oct 2026: 7 usersMove the mouse over the chart for any month

Ratings count

monthly, 12 months

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 ViewportSmith

ViewportSmith resizes browser windows to specific pixel dimensions for testing responsive web layouts. Create custom presets with exact width and height values. Apply presets via popup interface or keyboard shortcuts (Ctrl+Shift+1-4). Options include viewport-only mode (excludes browser chrome) and auto-center positioning. Presets are reorderable and can be exported/imported as JSON. Includes default presets for common devices. All functionality is client-side with no external connections. Developed by AIO.com.ai.