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About GF.dev HTTP/2 Compatibility Check
The HTTP/2 Compatibility Check is one of the GF.dev Geek Tools. It connects to your server and checks whether it successfully negotiates the h2 protocol through ALPN during the TLS handshake.
Because browsers only use HTTP/2 over HTTPS, the check applies to encrypted sites. A short FAQ explains the benefits of multiplexing, and the page links to a guide on enabling HTTP/2 and HTTP/3. It suits a quick confirmation after configuring a web server or CDN.
Strengths
- Tests real ALPN negotiation rather than headers
- Nothing to install
- Linked guide on enabling HTTP/2
Limitations
- Single-purpose check with a simple result
- Only checks servers reachable from the internet
Details
- Pricing
- FreeFree to use in the browser.
- License
- Proprietary
- Developer
- GF.dev
- Platforms
- Web
- How it runs
- Web application
- Works offline
- No
- Best suited for
- Confirming a web server supports HTTP/2
- Categories
- Website testing
- Last verified
- Added
- Provenance
- Selected from the TechWalrus Resource Hub (Website Checkers & Audit Tools); facts checked against the developer's own pages, 2 sources on file.