Once you've downloaded the Wakelet app, you can use the share extension to save content directly from your browser or another app. Here's how:
- Open your browser or another app on the content you want to save
- Click Share.
- Click the Wakelet icon in the list of share options (if you don't see the Wakelet icon, click more and check that the Wakelet app is enabled in your share options)
- In the page that appears, choose the collection you want to save the link to, or create a new collection.
See here for more: