What is ScreenSize.net?
ScreenSize.net is a set of browser-based tools for checking screen size, viewport size, device pixel ratio, breakpoints, and display scaling. It gives a live readout of what your browser sees, updates as you resize, and packages the results into a copyable report. It is built for developers, designers, and QA teams who need quick help with responsive layout debugging, image sharpness, and device comparisons. The site also includes calculators, breakpoint guides, screen size comparisons, phone and device charts, and a simple online ruler. Everything runs in the browser, and the live report can be copied or shared without storing raw visit data.
Key features
- Live updates for screen, window, viewport, and scaling.
- Checks responsive breakpoints for Tailwind, Bootstrap, and CSS media queries.
- Compares device pixel ratio, sharpness, and asset sizing needs.
- Provides screen size comparisons and phone/device reference charts.
- Includes calculators for image sizing, PPI, and aspect ratio.
- Generates copyable reports for bug tickets and support chats.
Category
Website
Location
Founder
pen zen
