version

Type String
Mandatory Yes
Example
"version": "0.1"

Version of the extension, formatted as numbers and ASCII characters separated by dots. For the details of the version format, see the Version format page. 

You can inspect the add-ons linter code to see how extension versions for Firefox are validated.

Note that the syntax defined for Chrome's version is more restrictive than that used by Firefox:

  • values for version that are valid for Chrome will always be valid for Firefox
  • values for version that are valid for Firefox may not be valid for Chrome

To obtain your extension version in your JavaScript code, use:

console.log(browser.runtime.getManifest().version);

Example

If the manifest contains:

"version": "0.1"

To obtain your extension version in your JavaScript code, use:

console.log(browser.runtime.getManifest().version);
// expected output: "0.1"

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxOperaFirefox for Android
versionChrome Full support Yes
Notes
Full support Yes
Notes
Notes Valid Chrome versions are a subset of valid Firefox versions.
Edge Full support 14Firefox Full support 48Opera Full support YesFirefox Android Full support 48

Legend

Full support  
Full support
See implementation notes.
See implementation notes.