Check a client configuration locally
Check common proxy URIs, sing-box-style JSON and Clash YAML in your browser without uploading a configuration.
Paste configuration text, not a subscription URL. Checks run only in this browser. Text is not uploaded, logged or stored. Clear it before leaving a shared device. Syntax success cannot prove reachability or client compatibility.
Options reflect the platforms listed by official client documentation. Clash Verge Rev is desktop only. Karing on Linux and Android TV combinations are not verified here. This is not a real-device import test.
Optional measurement
With your permission, we record a tool’s outcome category and this topic/language, and may pass a random short-lived token to FreeGuard to measure later purchases. Never the configuration or IP result. Tools and links work with this off.
No choice made. Measurement is off.