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+# GOV.UK Frontend stats
+
+This package is used to generate Rollup visualizer stats for built GOV.UK Frontend modules.
+
+```shell
+npm run build:stats --workspace govuk-frontend
+```
+
+Stats are shown in the review app [deployed to Heroku](https://govuk-frontend-review.herokuapp.com) or when run locally using `npm start`.
+
+## Stats for previous version
+
+GOV.UK Frontend is resolved from [./packages/govuk-frontend](../../packages/govuk-frontend/) unless a previous version is installed locally:
+
+```shell
+npm install govuk-frontend@4.7.0 --save --workspace govuk-frontend-stats
+```