This page is part of the documentation for the Chrome Apps platform, which was deprecated in 2020. Chrome Apps in Kiosk Mode used by Enterprise and Education customers will no longer be supported after April 2027, marking their end of life. Additionally, all remaining Chrome Apps used in managed environments by Enterprise and Education organizations will reach their end of life in October 2028. Learn more about migrating your app.

Manifest Version

One integer specifying the version of the manifest file format your package requires. As of Chrome 18, developers should specify 2 (without quotes) to use the format as described by this document:

"manifest_version": 2

Consider manifest version 1 deprecated as of Chrome 18. Version 2 is not yet required, but we will, at some point in the not-too-distant future, stop supporting packages using deprecated manifest versions. Extensions, applications, and themes that aren't ready to make the jump to the new manifest version in Chrome 18 can either explicitly specify version 1, or leave the key off entirely.

The changes between version 1 and version 2 of the manifest file format are described in detail in the manifest_version documentation.

Caution: Setting manifest_version 2 in Chrome 17 or lower is not recommended. If your extension needs to work in older versions of Chrome, stick with version 1 for the moment. We'll give you ample warning before version 1 stops working.