Browser and device information
Review browser-exposed User-Agent, Client Hints, device and runtime signals.
Checking. Results appear as each check finishes.
Browser values from this visit
CheckingThese values are returned directly by this browser without requesting additional device permissions. They are not a complete system or hardware inventory.
Browser and system declarations
Identification combines User-Agent and Client Hints. Browser privacy controls may hide some fields.
- Browser
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- Browser version
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- Rendering engine
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- System platform
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- Architecture / bitness
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- Browser vendor declaration
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- Mobile declaration
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- Device model
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- window.chrome
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- ProductSub
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- OS CPU declaration
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- Client Hints
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- User-Agent
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- AppVersion
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- Automation flag
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- Built-in PDF viewer
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- Browser plugins
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Browser-exposed screen and hardware
These values are exposed to the page by the browser and are not a complete operating-system hardware inventory.
- Screen resolution
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- Available screen
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- Page viewport
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- Outer browser window
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- Device pixel ratio
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- Screen orientation
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- Color depth
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- Pixel depth
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- Logical processors
- Checking Logical thread count exposed by the browser
- Estimated device memory
- Checking Browser-provided bucketed estimate, not physical RAM
- Maximum touch points
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- Media device count
- Checking Device names are not read because no permission is requested
Language, timezone and formatting
Browser settings and IP network location are shown together. Differences are consistency clues only.
- Browser languages
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- Locale
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- Region code
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- Browser timezone
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- UTC offset
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- Calendar
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- Numbering system
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- Hour cycle
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- First day of week
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- Measurement system
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- IP timezone
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- IP country
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- Date sample
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- Number format
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- Currency sample
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- Speech voices
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- Voice packages
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Browser feature support
Shows features available in this browser without requesting camera, microphone, location or notification permissions.
- Cookies
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- LocalStorage
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- SessionStorage
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- Storage in use
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- Estimated storage quota
- Checking Site-scoped browser estimate that may be rounded
- Secure context
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- Do Not Track
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- Global Privacy Control
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- Color preference
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- Reduced motion
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Network egress
The public address and network ownership come from the connection seen by the site; connection quality is a browser estimate.
- Public IP
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- Address family
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- ASN
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- Network organisation
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- Network prefix
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- Network location
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- Request protocol
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- Browser online state
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- Estimated connection type
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- Estimated downlink
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- Estimated round trip
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- Data saver
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Browser connection details
Shows network and browser information available during this visit; missing values are not inferred.
- User-Agent
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- Sec-CH-UA
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- Sec-CH-UA-Platform
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- Sec-CH-UA-Platform-Version
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- Sec-CH-UA-Mobile
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- Accept-Language
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- Accept-Encoding
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- Sec-Fetch-Site
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- Sec-Fetch-Mode
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- Forwarded
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- Via
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A guide to browser and device information
Understand what a website can read, what the browser declares and which values are estimates before using them to diagnose a problem.
How accurate is browser device information?
A web page uses interfaces allowed by the browser; it does not scan the computer directly. User-Agent, Client Hints and platform fields are client declarations. Screen, processor, memory and storage values are also subject to browser policy.
These fields help diagnose rendering and compatibility, but they are not a complete hardware inventory. A missing model, reduced memory value or broad operating-system version can be normal privacy behavior.
Visible to the website
Browser APIsReadExposed values
Current requestHeadersDeclarations
Exposed or estimated values, not a hardware scan.
Read these four groups differently
Identify the source before deciding whether a field answers your question.
- Software declarations
- UA and Client Hints describe a software environment but may be reduced, hidden or modified. Cross-check the browser’s own About page. A string is not a trusted device identity.
- Screen and viewport
- Screen, available area, window and viewport are different dimensions. Zoom, display scaling and browser controls affect them. Pixel ratio relates physical pixels to CSS pixels.
- Hardware and storage
- Processor count, memory and storage quota are exposed values or estimates. They need not equal machine specifications, free disk space or total device capacity.
- Feature availability
- An API existing, being permitted and successfully completing an operation are different things. Secure contexts, permissions, management policy and browser versions can restrict features.
Four useful compatibility checks
Share the fields relevant to the issue, rather than an entire environment report.
Confirm the software version
Use the browser’s About page, then compare the declarations here. Mobile browsers, embedded WebViews and desktop modes may expose different information.
Check display conditions
Record viewport size, zoom and system scaling. Layout problems usually depend on viewport width, not only the display’s physical resolution.
Review support and policy
Check HTTPS and whether privacy extensions or management policies restrict the feature. Grant only permissions needed for your task; this report does not require camera or microphone access.
Compare a second setup
Reproduce the issue in an updated browser or clean profile. Include the relevant values, version and reproduction steps rather than just a device name.
How does CHA.LA run this check?
The page reads navigator, screen, Intl, media queries and available Client Hints, checks storage and feature interfaces, and shows declarations visible in the current server request. Unsupported or failed fields remain missing instead of being invented.
Media enumeration only counts what the browser already permits. The page does not request camera, microphone or precise-location access. Counts and labels can depend on existing permissions and may not represent every physical device.
Frequently asked questions
UA strings, memory, display dimensions, permissions and missing values.
Why is reported memory lower than my installed RAM?
Browsers may round memory values and limit their range to reduce fingerprinting information. This is not a full measurement of physical RAM. Check operating-system settings for the actual installed capacity.
Why is the browser or system version different?
UA strings may be reduced or modified and can contain compatibility tokens. Client Hints are not universally supported. Review the declaration source and the browser’s own version information instead of relying only on a parsed name.
Why do screen resolution and viewport width differ?
Web layouts use CSS pixels. Window size, browser controls, zoom and operating-system scaling affect available space. Screen, outer-window and viewport measurements refer to different areas.
Is storage quota the same as free disk space?
No. StorageManager estimates usage and quota available to the current origin under browser policy. It is neither a full-disk capacity measurement nor an exact reading of remaining space.
Does an unavailable feature mean broken hardware?
Not by itself. Missing API support, an insecure context, privacy restrictions, permissions or management policy can explain it. Review software and policy, then test the actual feature you need.
Do I need camera, microphone or location permission?
This page does not request those permissions. It displays what the browser currently exposes, including potentially limited media-device enumeration. Extra permission grants are not required to complete the report.