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
ChromeEdgeFirefoxOperaSafariFirefox 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 YesSafari Full support 14Firefox Android Full support 48

Legend

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