HTTP Extensions in progress
XSLT Other

Draft HTTP Extension Specifications

This is the working area for the IETF HTTP Working Group draft extensions. See our contribution guidelines for information about how to participate.

Be aware that all contributions to our work fall under the "NOTE WELL" terms therein.

Build Status

Header Common Structure

Immutable Responses

Cache Digest

Origin Frame

Parked; this document is held until use cases are clarified.

Client Hints

Working Group Last Call concluded; waiting for writeup.

HTTP Encryption Content Encoding

Second Working Group Last Call concluded; waiting for changes.


Parked; waiting for implementation feedback.

Character Encoding and Language for Parameters

Working Group Last Call ended; waiting for writeup.

HTTP Opportunistic Security

Working Group Last Call concluded; incorporating feedback.


This will incorporate the following drafts: