Display PPI / Resolution Detector — Free Online Tool
Pixel density, screen size, color depth — live
Detect actual screen pixel density, viewport, color depth, DPR, refresh rate. For dev + designer device-test.
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Display PPI / Resolution Detector
Detect actual screen pixel density, viewport dimensions, color depth, DPR. Verify your "Retina" display is really delivering ≥220 PPI, not just marketing.
How to use this tool
- 1
Read live values
Resolution, DPR, color depth read instantly.
- 2
Enter screen diagonal
For PPI calculation, in inches.
- 3
See PPI
Apple Retina threshold ≈ 220+ PPI on laptops.
Frequently Asked Questions
What is DPR?
Why is screen.width sometimes wrong?
How accurate is PPI calc?
Key Takeaways
- Display PPI / Resolution Detector is a free, browser-based developer tool — pixel density, screen size, color depth — live.
- No signup, no downloads, no file uploads — your data stays on your device.
- Works on desktop, tablet, and mobile. Install as a PWA for offline access.
How to Use Display PPI / Resolution Detector
- Open the tool: Launch Display PPI / Resolution Detector on Toololis — no account or download needed.
- Enter your data: Paste text, enter values, or select a file directly in your browser.
- Get instant results: Everything is processed locally — results appear immediately.
- Copy or download: Save your output or share it. Bookmark for quick access next time.
Display PPI / Resolution Detector — Quick Facts
- Price
- Free — no limits, no watermarks, no paywalls
- Privacy
- 100% browser-based — no data is sent to any server
- Platform
- Any modern browser on desktop, tablet, or mobile
- Category
- Developer Tools on Toololis
- Offline
- Works offline after first visit (Progressive Web App)
| Feature | Details |
|---|---|
| Tool | Display PPI / Resolution Detector |
| Category | Developer |
| Signup Required | No |
| File Upload | None — processed in browser |
| Mobile Support | Fully responsive |
| Cost | Free forever |
Why Use Display PPI / Resolution Detector?
You should try Display PPI / Resolution Detector for a quick, private way to pixel density, screen size, color depth — live. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.
On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.