Welcome to the community, @Willy_Deslandes!
If you have a publicly-accessible link to your chart, you can use the link to embed the attachment into your Airtable base in an attachment field.
However, the trick here is that this can only be done by using Airtable’s API — you can’t manually copy & paste a link into Airtable.
You have access to Airtable’s API through a variety of ways:
- Create your own automation using Airtable’s native automations.
- Use an API tool like datafetcher.com (which has native integration with Airtable) or postman.com.
- Use a low-code automation & integration tool like Make.com.
#1 and #4 are the easiest, because they don’t require any knowledge of coding or APIs.