Compression Dictionary Transport
RFC 9842, “Compression Dictionary Transport”, is a Proposed Standard document published in September 2025 by P. Meenan, Y. Weiss. The canonical text is published by the RFC Editor.
Abstract
This document specifies a mechanism for dictionary-based compression in the Hypertext Transfer Protocol (HTTP). By utilizing this technique, clients and servers can reduce the size of transmitted data, leading to improved performance and reduced bandwidth consumption. This document extends existing HTTP compression methods and provides guidelines for the delivery and use of compression dictionaries within the HTTP protocol.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 9842 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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