Quick browser context
Review browser-visible device, display, connection, and origin-storage signals without installing an application.
Capability comparison
Choose based on the information or action you actually need.
| Capability | SpekCheck webpage | Permissioned installed utility |
|---|---|---|
| Installation | Not required | Required |
| Logical processor count | Browser-provided hint | Usually available with more detail |
| Memory | Coarse browser hint where supported | Installed capacity, modules, and live system use may be available |
| Graphics | WebGL renderer string where exposed | GPU model, drivers, memory, utilization, and sensors may be available |
| Storage | This site's origin quota and usage estimate | Physical drives, partitions, capacity, health, and files may be available |
| Network | Online state, browser estimates, and same-origin request timing | Adapters, routes, DNS configuration, traffic, and local-network details may be available |
| OS changes | Cannot modify drivers, registry, processes, startup items, or files | Possible when the tool has appropriate permission |
| Data persistence | Local browser storage unless you explicitly start checkout | Depends on the installed product and its policy |
When SpekCheck is useful
Local snapshots
Save and export versioned snapshots of supported browser signals in the current browser profile.
General guidance
Use transparent performance guidance as a checklist while you make changes yourself.
When you need an installed tool
Use a reputable, appropriately permissioned desktop utility when you need exact hardware inventory, temperatures, SMART data, driver information, process inspection, malware scanning, file cleanup, registry work, or system changes. Verify its publisher, permissions, privacy policy, update process, and independent reputation before installation.
Privacy boundary
Most SpekCheck diagnostic information stays in this browser profile. Payment checkout is different: if you choose it, your email, product, browser-profile ID, and payment status are processed by SpekCheck's server, Stripe, and the purchase database as described in the Privacy Policy.
Explore the supported browser tools
Start with a browser snapshot, open live dashboard signals, or review the exact feature boundaries.
Open SpekCheck View Features