Fast answers
Core tools should load quickly and show useful results above the fold.
About ScreenMetricLab
ScreenMetricLab is a practical toolkit for checking screen resolution, viewport size, device pixel ratio, browser dimensions, and display-related measurements. The goal is to give users a fast answer first, then support deeper work with calculators, device references, comparison tools, and guides.
Privacy-first
Screen metrics can be displayed in the browser without asking users to create an account.
Helpful content
Tool pages should include clear explanations, FAQs, and links to related resources.
How the site is used
How ScreenMetricLab is meant to be used
Most visitors come here with one practical question: what does this screen, browser, device, or layout actually report right now? The site is designed to answer that quickly, then help users move from one result into the next useful layer of context.
The homepage and screen checkers are meant for live measurements. They answer immediate questions about viewport size, screen resolution, browser dimensions, DPR, and other browser-reported details while a page is open in front of you. That makes them useful for QA notes, support requests, accessibility checks, and fast design validation.
The device database and comparison pages are meant for planning work. They help teams choose baseline devices, compare common references, and explain why one device or display feels tighter, wider, taller, or sharper than another before the team spends time on a full device lab or large emulator pass.
The calculators and guides are meant to reduce translation work between disciplines. A designer may need aspect-ratio math, a frontend developer may need viewport or unit conversions, and a QA tester may need a copyable screen report. The site works best when those people can move through related tools without losing the technical context of the original question.
Privacy matters because many of these answers can be generated directly in the browser. The general goal is to keep the tools useful without turning simple display checks into account-based workflows. That is why the site leans on browser-side measurements, lightweight tools, and clear on-page explanations instead of unnecessary friction.
Next steps
Start with the question you need to answer
Check a live screen
Use the live checker when you need current browser, viewport, DPR, or screen details from the device in front of you.
Browse device references
Use the device database when the question is about representative viewport sizes, test matrices, or nearby model references.
Compare two displays
Use comparison pages when you need to explain which display is tighter, taller, sharper, or more spacious for a real layout decision.