Why check your browser info: and what the data actually means
Knowing your exact browser version, rendering engine, and supported APIs is essential for web developers debugging cross-browser issues, and for end users trying to report problems accurately. A support team asking "what browser are you on?" no longer needs a back-and-forth: just share the copy-all output from this tool.
Beyond the basics, the feature support grid reveals which modern APIs your environment exposes: from WebGL and WebAssembly (needed for games and heavy computation) to Service Workers (needed for offline PWAs) and WebRTC (needed for video calling). If a site feature isn't working, checking feature flags here is a good first diagnostic step.
How to use: step by step
- 1Open the tool
Navigate to this page. Your browser info is collected automatically on load: no button press needed. - 2Read the summary strip
The top panel shows your browser name, major version, OS family, and device type at a glance. - 3Expand the detail cards
Scroll down to see Browser, Device & OS, Screen, and Network cards with granular values from browser APIs. - 4Check feature support
The Feature Support grid shows which APIs your browser exposes: WebGL, WebRTC, Geolocation, Clipboard, and more. - 5Copy all info
Click "Copy All Info" to copy a plain-text summary to your clipboard: useful for bug reports or support tickets.
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Frequently Asked Questions
- What browser am I using right now?
- The tool detects your browser automatically from the User-Agent string and reports the name and version in real time. Common browsers detected include Chrome, Firefox, Safari, Edge, Opera, and Samsung Internet.
- How does browser detection work?
- The tool reads the navigator.userAgent string returned by your browser and applies a series of regex patterns to extract the browser name, version, and rendering engine (Blink, WebKit, Gecko, or Trident).
- Can I check which OS I am on?
- Yes. The Device & OS card shows the detected operating system: Windows 10/11, macOS, Linux, Android, iOS, iPadOS, or ChromeOS: derived from the user-agent string.
- What is device pixel ratio and why does it matter?
- Device pixel ratio (DPR) is the ratio between physical pixels and CSS pixels. A DPR of 2 means your screen is a Retina or HiDPI display, which is why images may need to be 2× the CSS size to appear sharp.
- Does this tool store or send my browser data anywhere?
- No. All detection runs entirely client-side using browser JavaScript APIs. Nothing is sent to a server. AlteredIdea has no external API calls.
- What is the Clipboard API support indicator?
- It shows whether your browser exposes the modern navigator.clipboard API, which allows web pages to read and write the clipboard programmatically with user permission.
- Why does the tool show N/A for Device Memory?
- The Device Memory API (navigator.deviceMemory) is only available in Chromium-based browsers. Firefox and Safari do not expose this value.
- Can I use this tool to troubleshoot a website compatibility issue?
- Absolutely. Copy all info and share it with your developer. The report includes browser version, engine, OS, screen size, pixel ratio, and feature flags: everything needed to reproduce environment-specific bugs.
- What does the Network (Connection API) section show?
- It reads navigator.connection to display effective connection type (4g, 3g, slow-2g), estimated downlink speed in Mbps, and round-trip time in milliseconds. This API is only available in Chrome and Edge.
- Is this the same as a user-agent lookup tool?
- Related but different. This tool also uses the user-agent for browser and OS detection, but it goes further by reading live APIs for screen dimensions, hardware concurrency, device memory, touch points, and feature flags.
AlteredIdea vs alternatives
vs Google search answers: AlteredIdea gives you an interactive tool, not a static reference page. Try values, get instant answers.
vs paid lookup tools: Completely free, no account, no rate limits.
vs command-line tools: No terminal needed. Works in any browser instantly.