WordPress

Three steps, one snippet - no rebuild of your app required.

01 Copy your widget key (pk_...) from the dashboard: Settings -> API Keys.
02 In wp-admin, open Appearance -> Theme File Editor and edit footer.php, or use a code-snippet plugin.
03 Paste the snippet before the closing </body> tag and save.
04 Visit your site - the widget loads on every page.

INSTALL SNIPPET

<script src="https://cdn.example.com/widget.js"
        data-public-key="pk_..."
        data-api-url="https://api.example.com"
        async></script>