Change one setting at a time
Use the same device, test version and window settings. Recheck after reopening a profile, changing graphics settings or changing language, and record what changed.
BrowserCheck · Browser environment diagnostics
Compare Browser Environment Snapshots
Capture, save and compare two browser environments locally. Review changes in User Agent, Client Hints, WebGL, WebGPU, storage and TLS connection fields.
Capture two environments
Capture A, change one setting or reopen the profile, then capture B. To compare another browser, download a snapshot there and import it here. Each capture runs graphics and disposable storage checks, plus two requests to this site.
Snapshot files contain full UA, exact versions, screen, time zone, GPU information and hashes. Keep these files private. Raw IP addresses and cookie contents are excluded; Copy safe summary and Print redact detailed values.
Snapshot A
Capture or import a snapshot to begin.
Snapshot B
Capture or import a snapshot to begin.
Copied and printed output omits IP addresses, the full User Agent, exact versions, fingerprint hashes, and precise location.
Keep snapshots on your device
Captures remain in this tab until you click Save. Transfer files to compare another browser. Snapshots are not uploaded and have no public share link.
Understand the measurement scope
Storage checks test first-party write, read and cleanup rather than profile isolation. Network fields cover observation state, address family and the edge connection; they contain no raw IP or DNS / WebRTC leak verdict.
How to interpret differences
Browser updates, UA reduction, privacy settings, driver changes and proxies that terminate TLS can change observations. Hashes summarize fixed samples rather than establish a unique identity. Imported files are supplied by users; compatible formats and test versions do not independently verify their contents.