Although web app manifest files (manifest.webmanifest) are written in JSON format, they should not be served with the standard Content-Type application/json.

Indeed, the W3C standards specify that the content type used to serve Web App Manifest files must be application/manifest+json. Using the correct header ensures that browsers interpret your manifest correctly, which avoids errors and ensures better compatibility.

This recipe configures your site to systematically use the correct Content-Type, thereby bringing your site into full compliance with web standards.

If you don't know what a Web App Manifest file is, you can consult our "Web App Manifest" recipe to design and expose a manifest for your website.

How to install this recipe on my website with redirection.io?

Installing this recipe on your website requires the following steps:

1. Locate the Web App Manifest file: You can use our free Web App Manifest validator to find the Web App Manifest file on your website. This file is usually named manifest.webmanifest, manifest.json, or site.webmanifest, and it is most often located at the root of your website.
2. Configure the Web App Manifest file path: Paste the path of the Web App Manifest file into the "Path of the manifest file" field.
3. Click the install button: This will create a rule in "draft" mode, so you can modify it if necessary.
4. Publish the rules: the manifest file will be served with the correct content-type a few seconds after publication.