Wiki - https://fedoraproject.org/wiki/Changes/Use_COLR_for_Noto_Color_Emoji
Discussion thread -
https://discussion.fedoraproject.org/t/f43-change-proposal-use-colr-for-noto-color-emoji-system-wide/148883

This is a proposed Change for Fedora Linux.
This document represents a proposed Change. As part of the Changes
process, proposals are publicly announced in order to receive
community feedback. This proposal will only be implemented if approved
by the Fedora Engineering Steering Committee.


== Summary ==
The Noto Color Emoji fonts have released some new files with the COLRv1 format.
The COLRv1 format is a color scalable font compared with the previous
color bitmap fonts.

== Owner ==
* Name: [[User:pwu| Peng Wu]]
* Email: p...@redhat.com


== Detailed Description ==
The new Noto Color Emoji font uses the new COLRv1 format.
The COLRv1 format provides the color scalable emoji glyphs with
smaller file size.

== Feedback ==


== Benefit to Fedora ==
This new font format provides better scalable color emoji rendering
results and smaller file size.

== Scope ==
* Proposal owners: google-noto-emoji-fonts

* Other developers: <!-- REQUIRED FOR SYSTEM WIDE CHANGES -->

* Release engineering: [https://pagure.io/releng/issues #Releng issue
number] <!-- REQUIRED FOR SYSTEM WIDE CHANGES -->

* Policies and guidelines: N/A (not needed for this Change) <!--
REQUIRED FOR SYSTEM WIDE CHANGES -->

* Trademark approval: N/A (not needed for this Change)

* Alignment with the Fedora Strategy:


== Upgrade/compatibility impact ==
The Noto Color Emoji font will switch to use COLRv1 font format.


== Early Testing (Optional) ==


== How To Test ==
After upgrading to Fedora 43, the new color scalable emoji fonts will
replace the old color bitmap emoji font.
Please open some documents or web pages which contain the emoji
character sequence to check the emoji rendering results.



== User Experience ==
The new scalable font format should have better or similar rendering
results compared to the old bitmap font format.

== Dependencies ==



== Contingency Plan ==

* Contingency mechanism: If the new font format has some issues with
some applications, plan to provide another
google-noto-color-bitmap-emoji-fonts sub package for compatibility.
* Contingency deadline: Fedora Beta Freeze
* Blocks release? No

== Documentation ==
Spec: https://learn.microsoft.com/en-us/typography/opentype/spec/colr



== Release Notes ==

-- 
Aoife Moloney

Fedora Operations Architect

Fedora Project

Matrix: @amoloney:fedora.im

IRC: amoloney

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