こんにちは TAG-さん!

I'm requesting a TAG review of CSS dynamic-range-limit

The goal of this proposal is to provide a mechansim through which an application may limit the maximum brightness of HDR content (including images, videos, and in the future HTML canvases and CSS colors).

• Explainer¹: https://github.com/ccameron-chromium/hdr-headroom-limit/blob/main/EXPLAINER.md
• Specification: https://drafts.csswg.org/css-color-hdr/#controlling-dynamic-range
• WPT Tests: https://wpt.fyi/results/css/css-color-hdr?label=experimental&label=master&aligned
• User research:
• Security and Privacy self-review²:
• GitHub repo:
• Primary contacts:
  • @ccameron-chromium, Google, proposal author, Chromium author
  • sboukortt, Google, Chromium implementor
  • @svgeesus Editor of CSS Color HDR spec
• Organization/project driving the specification:
• Multi-stakeholder support³:
  • Chromium comments: Positive
  • Mozilla comments: https://github.com/mozilla/standards-positions/issues/979
  • WebKit comments: https://github.com/WebKit/standards-positions/issues/312
  • Adobe requested support
• Status/issue trackers for implementations⁴:
  • https://chromestatus.com/feature/5146250411769856, https://crbug.com/40277822

Further details:

• I have reviewed the TAG's Web Platform Design Principles
• Relevant time constraints or deadlines: Aiming for Chrome 133 (early January)
• The group where the work on this specification is currently being done: CSS WG
• The group where standardization of this work is intended to be done (if different from the current group):
• Major unresolved issues with or opposition to this specification:
• This work is being funded by: