Anonymity checkers
BrowserSpy.dk
BrowserSpy.dk lets visitors inspect browser information and privacy signals exposed when a page is visited; its provider describes the tests as diagnostics, not a complete security or anonymity assessment. That distinction matters if you need to assess more than what a browser reveals to a page.
In general, this kind of checker is relevant to readers who want to examine browser-visible data, provided they treat results as context-specific diagnostics.
Editorial review based on public sources, without hands-on testing; facts checked on 2026-10-31.
This page contains no partner link to this service.
- Logo
Logos are trademarks of their respective owners and shown only to identify the service.- Name
- BrowserSpy.dk
- Category
- Anonymity checkers
- Official site
- browserspy.dk · No link provided
- Facts checked
BrowserSpy’s tests expose browser details
The provider’s homepage and about page describe these checks, according to pages checked on 2026-10-31.
- Browser and operating system information: inspectable on the site.
- Network address: a test reports the address seen by the web server.
- Request data: inspect information sent by the browser with a request.
- Browser features: the site reports browser name, version, and capabilities.
- Access: the provider states the service is free.
Browser and display checks report different data
Browser and display checks separate screen properties from browser capabilities. The display tests cover screen dimensions, color depth, and other display properties.
The site also tests cookie behavior and cookies available to the page, and its about page lists installed fonts and hardware information among reported details. A separate capabilities list describes features supported by the client’s browser, including cookies, JavaScript, and HTTP headers.
The capability table includes entries such as ActiveXControls, Cookies, and JavaScript. Treat that list as a report of browser features, rather than a complete assessment of privacy or security.
The online tests are free to use
BrowserSpy says the tool is free to use, and describes it as an online service rather than downloadable software. The FAQ says it cannot be downloaded because it runs online.
The about page traces the project to JavaScript utilities for detecting browser name and version. It says the tests were rewritten for the new BrowserSpy.dk, with some tests added and others removed as obsolete. The provider dates the first version to around 1999 and says it was hosted on the creator’s personal website.
Test results depend on the visitor's browser, device, and privacy protections.
A page visit reveals request and browser data
The test pages display information that the provider says can be retrieved from a visitor’s browser when a page is visited. The site also lets visitors inspect information their browser sends with a request.
That mechanism matters beyond the checker itself: the provider says remote sites, including malicious ones, can retrieve information BrowserSpy.dk displays. This is the provider’s description of browser-exposed data, not a claim that the tests assess every way a site might collect information.
Geolocation is a separate case. The provider says precise geolocation requires the visitor’s permission, and the test uses the browser’s permission prompt. Interpret its result with that permission condition in mind.
Check the result before relying on it
Before relying on any browser checker, ask what a result describes, what it compares against, and whether the provider explains how to interpret it. These are general questions to raise with a provider, not claims about BrowserSpy.dk.
For a diagnostic page, ask whether it reports the value observed, the method used to obtain it, or a comparison with a stated baseline. Also ask what happens when a browser blocks or restricts the feature being checked; an unavailable value can have more than one cause.
If the result will inform a technical decision, clarify which browser and device conditions the test covers, and whether those conditions match the setup in question. In general, a result is useful only within the scope its test describes.
Interpretation depends on the visitor’s setup
BrowserSpy says results depend on the visitor’s browser, device, and privacy protections. An unavailable value may indicate an unsupported, blocked, or restricted feature, so the result alone does not identify the cause.
The provider describes the tests as diagnostics rather than a complete security or anonymity assessment. Historical tests for Flash, Java applets, and other plugins may be unavailable in modern browsers.
The FAQ cites verified support for Firefox 2 and 3 and Internet Explorer 6 and 7, so that reference does not establish current browser coverage. The same FAQ says support across all known browsers for every test is almost impossible.
The provider asks visitors who find a test error to contact the site, but says a fix is not guaranteed because of limited time. Several setup and data-handling details are listed under What we could not confirm.
The test pages cover distinct signals
- The inspection scope includes browser and operating-system details, IP addresses, HTTP headers, and browser features exposed to websites.
- Separate display tests report screen dimensions, color depth, and other display properties.
- The cookie test checks cookie behavior and cookies available to the site.
- Geolocation uses the browser’s permission prompt, making permission part of what readers should consider when interpreting that result.
- The service also reports installed fonts and hardware information.
- Its capabilities list describes features supported by the client’s browser, including cookies, JavaScript, and HTTP headers.
Use it as a diagnostic reference
BrowserSpy.dk suits readers who want to inspect information a page may retrieve from a browser. The provider frames the tests as diagnostics, so they should be read as specific observations rather than a complete security or anonymity assessment.
The capabilities list can also serve readers comparing what their client browser supports. In either case, match the test’s reported signal to the question at hand, and account for differences in browser, device, and privacy protections.
Compare checkers by reported signals
In general, compare checkers by the signals they report, the basis they use for comparison, and whether access is free or paid. Check how each provider explains privacy, result interpretation, and the limits of its tests before relying on a result.
What we could not confirm
- Integrations and setup requirements: configuration steps and supported connections.
- Data handling: collection, retention, and use of test-visit data.
- Current coverage: supported browsers and devices.
- Comparison baseline: reference used to interpret reported results.
Questions about BrowserSpy test results
What does BrowserSpy.dk examine?
BrowserSpy.dk examines information that its online tests say a page can collect from a browser during a visit. The listed scope includes browser and operating-system information, IP addresses, HTTP headers, and browser features exposed to websites.
Does BrowserSpy.dk report the network address?
Yes. BrowserSpy.dk includes a test for the network address seen by the web server. The result concerns the address observed by that server; it is one reported signal, not a complete account of browser privacy or anonymity.
How does the geolocation test work?
The geolocation test uses the browser’s permission prompt. The provider says precise geolocation requires the visitor’s permission, so interpret the test in light of whether that permission was granted.
What does the resolution test report?
The resolution test reports the browser’s logical resolution and the display’s physical resolution. These are distinct values in the test output; the provider’s description does not make them a broader measure of privacy or security.
What can an unavailable value mean?
An unavailable value may indicate that a feature is unsupported, blocked, or restricted. The result alone does not identify which condition applies, so treat it as an indication to interpret rather than a diagnosis of the cause.
Is BrowserSpy.dk downloadable or a full anonymity assessment?
BrowserSpy.dk is an online tool, and its FAQ says it cannot be downloaded. The provider describes its tests as diagnostics, not a complete security or anonymity assessment.
Rely on the tests only within their scope
Fits if… you want a free diagnostic for browser-exposed information; the provider states that the service is free.
Probably not if… you need a complete assessment of security or anonymity, which the provider says the tests do not provide.
Main risk… interpreting a result without accounting for the visitor’s browser, device, and privacy protections. Check whether the specific signals reported answer the question you need to resolve.
Sources
These public pages are the basis of the facts above; next to each is the date it was read.
- browserspy.dk/aboutchecked
- browserspy.dkchecked
- browserspy.dk/capabilities.phpchecked
- browserspy.dk/faqchecked
- browserspy.dk/resolution.phpchecked
Where the facts on this page come from
Editorial team of Funnel Notebook. Source-based work: each fact comes from a page listed above, read on 2026-10-31 by the Funnel Notebook editors. There was no hands-on testing. The page is updated when the sources change.
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