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 # webextensions-examples
 Example Firefox add-ons created using the [WebExtensions](https://developer.mozilla.org/en-US/Add-ons/WebExtensions) API.
 
-* Before you try out these extensions, read about [prerequisites](https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Prerequisites).
+To use these examples, you need at least Firefox 45. Some examples rely on
+APIs that were added in more recent versions of Firefox. To check the minimum
+version of Firefox needed for a given example, see the `strict_min_version`
+part of the [applications key](https://developer.mozilla.org/en-US/Add-ons/WebExtensions/manifest.json/applications) in the example's manifest.json file.
 
-* To test out an extension in Firefox, see [Packaging and Installation](https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Packaging_and_installation).
+https://developer.mozilla.org/en-US/Add-ons/WebExtensions/manifest.json/applications
 
-* To see details of each extension, what it does and what it demonstrates, see the [WebExtensions Examples page](https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Examples).
+To test out an extension in Firefox, see [Packaging and Installation](https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Packaging_and_installation).
+
+To see details of each extension, what it does and what it demonstrates, see the [WebExtensions Examples page](https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Examples).