Duda lets you inject custom code into every page from a single settings screen.
- Open your site in the Duda editor and click Site Settings → Header HTML (or Footer HTML).
- Paste your Accessibird snippet and click Save.
- Click Republish to push the change live.
If you manage many sites, the same snippet can be pushed via a Duda template so new sites built from it ship with Accessibird already installed.
