Browser

User agent
not available
Browser and version
not available
Mobile device
not available

The user agent is the description a browser gives of itself. We pass it on unchanged instead of interpreting it.

Operating system

Operating system
not available
Version
not available
Processor type
not available
Bitness
not available
Device model
not available

Only browsers that report their operating system show values here. If they do not, the user agent above is all we have.

Viewport

Size
not available
Zoom
not available

The viewport is the part of a page you can see. It changes while you resize the window. Zooming with the keyboard changes the device pixel ratio below.

Screen

Screen size
not available
Usable screen area
not available
Device pixel ratio
not available
Color depth
not available
Orientation
not available

The device pixel ratio tells us how many screen dots your device uses for one dot of a page.

Languages and time

Browser languages
not available
Preferred language
not available
Time zone
not available
Local time
not available

Languages are listed in the order your browser prefers them.

Display preferences

Dark mode
not available
Contrast
not available
Reduced motion
not available
Reduced transparency
not available
Forced colors
not available

These are the settings your browser or system asks websites to respect.

Image formats and compression

WebP images
not available
AVIF images
not available
Brotli compression (br)
offered
Zstandard compression (zstd)
offered

Image support is measured, not asked for: your browser has to decode one test image per format. Compression shows what your browser offers our server, which decides how small we may send files to you.

Technical environment

Secure connection
not available
Cookies
not available
Local storage
not available
Network status
not available
Processor cores
not available
Device memory
not available
Connection
not available
Previous page
not available

As received by our server

User-Agent header
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
Accept header
*/*
Accept-Encoding header
gzip, br, zstd, deflate
Accept-Language header
not available
Sec-CH-UA-Platform header
not available
Sec-CH-Prefers-Color-Scheme header
not available

This is what arrives at us. Differences to the boxes above point to a proxy, a security tool or an add-on that changes your requests.