.webmanifest MIME type
Web app manifestapps & binaries
application/manifest+jsonThe manifest that makes a site installable as a progressive web app.
| MIME type | application/manifest+json |
|---|---|
| Extensions | .webmanifest |
| Content-Type | application/manifest+json |
| Compress in transit? | Yes — enable gzip or Brotli |
Good to know
- Linked with
<link rel="manifest" href="/manifest.webmanifest">. Browsers also accept a manifest served asapplication/json.
Serve .webmanifest files with the right type
The response header to send:
Content-Type: application/manifest+json
Most servers pick the type from the file extension. If yours sends the wrong one, map it explicitly:
nginx (inside the types block in mime.types)
application/manifest+json webmanifest;
Apache (.htaccess or server config)
AddType application/manifest+json .webmanifest
Express
res.set("Content-Type", "application/manifest+json");Python
import mimetypes
mimetypes.add_type("application/manifest+json", ".webmanifest")HTML file input
<input type="file" accept=".webmanifest,application/manifest+json">
Check it
See what a server sends for a file, and what type a local file really is by its contents:
curl -sI https://example.com/file.webmanifest | grep -i '^content-type:' file --mime-type file.webmanifest
Frequently asked questions
What is the MIME type for .webmanifest files?
application/manifest+json.
What Content-Type header should a .webmanifest file be served with?
Content-Type: application/manifest+json. It compresses well, so let the server apply gzip or Brotli.
Related types
Headers that go with it: Content-Type · Content-Disposition · X-Content-Type-Options