Add sub-apps

[browser-specs-bot]

URL

https://wicg.github.io/sub-apps/

Rationale

• See repository: WICG/sub-apps
• Would-be shortname: sub-apps

Additional properties

{}

[browser-specs-bot]

Changes to index.json

This update would trigger the following changes in index.json:

Add spec (1)

{
  "url": "https://wicg.github.io/sub-apps/",
  "seriesComposition": "full",
  "shortname": "sub-apps",
  "series": {
    "shortname": "sub-apps",
    "currentSpecification": "sub-apps",
    "title": "Sub Apps",
    "shortTitle": "Sub Apps",
    "nightlyUrl": "https://wicg.github.io/sub-apps/"
  },
  "organization": "W3C",
  "groups": [
    {
      "name": "Web Applications Working Group",
      "url": "https://www.w3.org/groups/wg/webapps/"
    }
  ],
  "nightly": {
    "url": "https://wicg.github.io/sub-apps/",
    "status": "Unofficial Proposal Draft",
    "alternateUrls": [],
    "repository": "https://github.com/WICG/sub-apps",
    "sourcePath": "index.bs",
    "filename": "index.html"
  },
  "title": "Sub Apps",
  "source": "spec",
  "shortTitle": "Sub Apps",
  "categories": [
    "browser"
  ],
  "standing": "pending"
}

Tests

These changes look good! 😎

Crawl results for Sub Apps

Crawl summary:

• Title: Sub Apps
• Authoring tool: bikeshed
• Date: 17 July 2026
• Revision ID: c92b2ac27c737e7d7d02b18c8cc639affb6e3df9
• Canonical URL: https://wicg.github.io/sub-apps/
• Spec defines:
  • Algorithms: 5 found
  • Headings: 31 found
  • IDs: 368 found
  • Links: 14 rawlinks, 14 autolinks
  • References: 10 normative
  • Terms: 1 explicitly exported, 16 exported by default, 7 private
  • Web IDL: 6 names (or partials)
• No CDDL, CSS, Events definitions found

5 Web IDL names

• typedef ManifestId (xref search)
• dictionary SubAppsAddResponse (xref search)
• dictionary SubAppsRemoveResponse (xref search)
• dictionary SubAppsListResult (xref search)
• interface SubApps (xref search)

1 extended Web IDL name

• interface Window (xref search)

1 explicitly exported term

• sub-apps for "policy-controlled feature", type dfn (xref search)

[tidoust]

Tied to the Isolated Web Apps runtime, so depends on #1803.

(Also, the spec status is still "Unofficial proposal draft")

[github-actions]

The specification was updated on 2026-07-23 (last reviewed on 2026-07-22).