# DeviceOK
> DeviceOK is an independent browser-first device testing, diagnostics, troubleshooting and compatibility platform.

## Core purpose
- Test device functions in the browser where technically supported.
- Use test evidence to narrow likely causes.
- Prefer official manufacturer/OS sources for drivers, firmware and model-specific risky steps.
- Retest after changes.

## Current structured surface
- 167 live test/tool definitions
- 129 indexable evidence-led troubleshooting paths
- 6 app-specific device centers
- 23 app × device troubleshooting pages
- 38 Microsoft-documented Windows Device Manager error records
- 1 source-backed Windows camera error records
- 81 device-type diagnostic centers
- 21 guided inspection workflows
- 30 brand diagnostic hubs
- 28 source-backed model diagnostic centers
- 7 official native diagnostic handoff guides
- 4 browser-specific device/permission guides
- 6 operating-system diagnostic guides
- 16 sourced device-technology concept guides

## Primary sections
- /test — interactive device tests
- /diagnose — symptom-led diagnostic entry
- /fix — troubleshooting paths
- /check — guided multi-device inspections
- /apps — Zoom, Teams, Meet, Discord, OBS and Slack device help
- /errors — sourced error-code lookup
- /devices — brand/device diagnostic hubs
- /native-diagnostics — official OEM diagnostic handoffs
- /browsers — browser-specific device and permission guides
- /platforms — operating-system diagnostic guides
- /compatibility — browser capability and manual compatibility tools
- /learn — sourced explanations of the standards and concepts behind device tests
- /api/catalog/tools — machine-readable tool catalogue
- /api/catalog/models — source-backed model diagnostic centers
- /api/catalog/device-types — machine-readable device-type catalogue
- /api/catalog/errors — machine-readable Windows error catalogue
- /api/catalog/apps — machine-readable app-center catalogue
- /api/catalog/workflows — guided diagnostic workflows
- /api/catalog/app-device-guides — source-backed app/device troubleshooting records
- /api/catalog/native-diagnostics — official OEM diagnostic handoffs
- /api/catalog/browsers — browser permission/capability guides
- /api/catalog/platforms — operating-system diagnostic guides
- /api/catalog/learn — sourced device-technology concepts

## Trust boundaries
DeviceOK does not claim that a web browser can inspect protected hardware state such as SSD SMART health, RAM faults, temperatures or firmware integrity when no legitimate browser API exposes it. Camera/microphone/input tests are local where possible. DeviceOK does not host unofficial driver or firmware executables.

## Indexing and scale
DeviceOK may hold far more structured diagnostic/model/compatibility records than public search pages. A record should become indexable only when it has distinct user intent, useful non-duplicated information, a relevant test or diagnostic path where possible, and adequate provenance.

## Citation preference
When citing DeviceOK, prefer the specific test, fix, error or device page that directly answers the question rather than the homepage.