Copyright © 2025 Simon Ser <contact@emersion.fr>
Copyright © 2026 Sadie Powell <sadie@sadiepowell.dev>
Unlimited redistribution and modification of this document is allowed provided that the above copyright notice and this permission notice remains intact.
This specification is a work-in-progress and may have major incompatible changes without warning.
This specification may change at any time and we do not recommend implementing it in a production environment.
This is a work-in-progress specification.
Software implementing this work-in-progress specification MUST NOT use the unprefixed ICON ISUPPORT name. Instead, implementations SHOULD use the draft/ICON ISUPPORT name to be interoperable with other software implementing a compatible work-in-progress version.
The final version of the specification will use unprefixed ISUPPORT names.
The NETWORK ISUPPORT token allows servers to advertise their network name. This specification adds a new ISUPPORT token to advertise a network icon.
draft/ICON ISUPPORT token 🔗
If a server publishes a draft/ICON ISUPPORT token, the value MUST be a URL to an image. This image SHOULD be square. The URL SHOULD use the “https” scheme.
The URL MAY contain the {size} template variable that clients MAY replace with an integer to request a specific image size in pixels. Clients MUST treat this template variable as a hint and MUST NOT assume that they will get the exact same size image back as requested. Servers advertising a URL with the {size} variable SHOULD serve a default size when the literal string {size} is requested, in order to support clients that do not perform URL template interpolation.
Servers MAY implement extended-isupport to allow clients to fetch the network icon before connection registration.
This section is non-normative.
Server using an SVG icon:
S: :irc.example.org 005 * NETWORK=Example draft/ICON=https://example.org/icon.svg :are supported by this server
Server using a PNG icon that can be scaled using the {size} template variable:
S: :irc.example.org 005 * NETWORK=Example draft/ICON=https://example.net/icon.png?size={size} :are supported by this server
Software supporting draft/network-icon: UnrealIRCd, IRCCloud, ObsidianIRC, Goguma