HTTP/2 vs HTTP/1.1 Explainer
Select a topic to compare request framing, multiplexing, header fields, and connection behavior.
A QUICK WALKTHROUGH
How to use this tool
- Choose a comparison topic.
- Read the HTTP/1.1 and HTTP/2 entries side by side.
- Use the standards references to continue your study.
Protocol reference
This guide summarizes stable differences defined by HTTP/1.1 and HTTP/2 specifications. It does not inspect your connection or make browser support, security, or performance claims.
Terminology matters
HTTP/2 changes the wire framing and stream model while retaining HTTP semantics. A request method, status code, and header field still have protocol-defined meaning.
Local and bounded
The comparison data is bundled with this page. Selecting topics makes no network request.
GOOD TO KNOW
Common questions
Does HTTP/2 replace HTTP semantics?
No. It changes how messages are framed and exchanged; the HTTP semantics remain defined separately.
Is HTTP/2 always faster?
This guide makes no performance claim. Results depend on the deployment and workload.
Does the tool test a server?
No. It is a local reference guide, not a protocol probe.