1. What does this tool do
This free online computer statistics tool shows system and device information that your browser can report: CPU cores, memory, screen size, window size, connection type, timezone, locale, storage quota, battery, and more. Use it to check device info, browser capabilities, or system info for debugging layout, performance, or support. All read from standard browser APIs—no sign-up, no upload. Ideal for responsive design, performance, support, or storage checks.
2. How to use it
Quick start: Open the tool—stats are collected on load. Expand sections (Device, Screen, Network, Storage) to see CPU cores, memory, resolution, window dimensions, connection, timezone, locale, storage quota, battery. Resize the window and refresh to see updated values.
- Open the tool — Stats are collected on load and shown in sections (e.g. Device, Screen, Network, Storage).
- Expand sections — Click or expand to see CPU cores, memory, screen resolution, window dimensions, connection, timezone, locale, storage quota, battery (if available).
- Resize or change — Resize the window or change orientation; refresh to see updated window size and related values.
- Use for debugging — Reference these values when testing responsive layout or device limits.
3. How it works
The tool reads from navigator (e.g. hardwareConcurrency, deviceMemory, connection), screen (width, height, colorDepth), window (innerWidth, innerHeight), Intl (timezone, locale), Storage API (quota if available), and Battery API if supported. No data is sent to a server for the stats; all is read locally and displayed in your browser. No data is sent to any server.
4. Use cases & examples
- Responsive design — Check viewport and screen size on different devices.
- Performance — See core count and memory to reason about thread or memory limits.
- Support — Ask users to open the tool and share “screen resolution” or “browser” for troubleshooting.
- Storage — Check approximate storage quota for IndexedDB or Cache API.
Example
- CPU cores: 8; Device memory: 8 GB; Screen: 1920×1080; Window: 1200×800; Connection: 4g; Timezone: America/New_York; Locale: en-US.
5. Limitations & known constraints
- Browser-dependent — Many values (e.g. deviceMemory, battery) are not available in all browsers or may be rounded/estimated for privacy.
- No hardware IDs — The tool does not collect or show device identifiers, MAC addresses, or serial numbers.
- Privacy — Some browsers restrict or coarsen values (e.g. memory) to reduce fingerprinting. Results are best-effort.