HTTP/2 website screenshot

HTTP/2

HTTP/2 is the second major version of the Hypertext Transfer Protocol, defined by the IETF in RFC 7540 and standardized in 2015. It optimizes use of network resources and reduces perceived latency by introducing a binary framing layer over a single TCP connection, with full request and response multiplexing across independent bidirectional streams. HTTP/2 uses HPACK header compression to eliminate redundant header data, credit-based flow control via WINDOW_UPDATE frames, stream prioritization through dependencies and weights, and server push via PUSH_PROMISE frames to proactively deliver anticipated resources. Core frame types include DATA, HEADERS, PRIORITY, RST_STREAM, SETTINGS, PUSH_PROMISE, PING, and GOAWAY, with the protocol preserving the existing HTTP semantics of methods, status codes, and headers while transforming how they are transported on the wire.

HTTP/2 is profiled on the APIs.io network. Tagged areas include Binary Framing, HPACK, HTTP, HTTP/2, and IETF.

🌐 Visit website📡 Profile data on GitHub
0 APIs
Binary FramingHPACKHTTPHTTP/2IETFMultiplexingNetworkingPerformanceProtocolRFC 7540Server Push

Resources

Documentation 2

Reference material describing how the API behaves

Reference
Reference
 HPACK Specification
HPACK Specification

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Company 1

The organization behind the API

Website
Website

Other 1

Properties that don't map to a standard resource type

Wikipedia
Wikipedia

Source (apis.yml)

apis.yml Raw ↑ 
aid: http-2
name: HTTP/2
description: HTTP/2 is the second major version of the Hypertext Transfer Protocol, defined by the IETF in RFC 7540 and standardized
  in 2015. It optimizes use of network resources and reduces perceived latency by introducing a binary framing layer over
  a single TCP connection, with full request and response multiplexing across independent bidirectional streams. HTTP/2 uses
  HPACK header compression to eliminate redundant header data, credit-based flow control via WINDOW_UPDATE frames, stream
  prioritization through dependencies and weights, and server push via PUSH_PROMISE frames to proactively deliver anticipated
  resources. Core frame types include DATA, HEADERS, PRIORITY, RST_STREAM, SETTINGS, PUSH_PROMISE, PING, and GOAWAY, with
  the protocol preserving the existing HTTP semantics of methods, status codes, and headers while transforming how they are
  transported on the wire.
url: https://raw.githubusercontent.com/api-evangelist/http-2/refs/heads/main/apis.yml
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/http-2.png
tags:
- Binary Framing
- HPACK
- HTTP
- HTTP/2
- IETF
- Multiplexing
- Networking
- Performance
- Protocol
- RFC 7540
- Server Push
created: '2025'
modified: '2026-04-28'
specificationVersion: '0.23'
apis: []
common:
- type: GitHubOrganization
  url: https://github.com/http2
- type: Reference
  url: https://httpwg.org/specs/rfc7540.html
- type: Website
  url: https://http2.github.io/
- type: HPACK Specification
  url: https://httpwg.org/specs/rfc7541.html
- type: Wikipedia
  url: https://en.wikipedia.org/wiki/HTTP/2
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-type: standard

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