mdn / mdn/browser-compat-data

http.headers.Priority - Missing Safari iOS support

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browser:safari data:http info needed
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JSON
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Description

What type of issue is this?

Incorrect support data (example: BrowserX says "86" but support was added in "40")

What information was incorrect, unhelpful, or incomplete?

Says that Safari on iOS does not support Priority header in requests, this is incorrect.

What browsers does this problem apply to, if applicable?

Safari

What did you expect to see?

Priority header support in Safari iOS (and maybe in desktop version too?)

Did you test this? If so, how?

Tested on Safari 26.1 on iPad

Can you link to any release notes, bugs, pull requests, or MDN pages related to this?

No response

Do you have anything more you want to share?

No response

MDN URL

https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Priority

MDN metadata
MDN page report details
  • Query: http.headers.Priority
  • Report started: 2026-03-10T07:14:34.178Z

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the MDN URL and the browser-compat-data entry for http.headers.Priority; inspect the current Safari iOS support data against the reported Safari 26.1 iPad result. Update the compatibility record to reflect verified support and clarify whether desktop Safari is included. Done means the entry accurately represents Safari support.

Written by the indexing model from the issue text.

Assessment

Tech stack
json
Domain
documentation, web-dev
Issue type
Bug
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
55/100

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