Cal ID is a WordPress plugin for embedding Cal ID booking pages into any site using a Gutenberg block or shortcode. It supports inline, modal, and floating layouts and automatically handles confirmations, reminders, CRM sync, and payments on the hosted Cal ID service. The plugin can prefill user details for logged-in visitors and passes theme, color, and UTM parameters to customize the booking experience.
In the Productivity & Work space, Cal ID takes a focused approach. It focuses on embedding functional appointment scheduling and booking interfaces directly into WordPress pages. Cal ID is a B2B2C product aimed at wordPress site owners needing scheduling. There is a free tier. Cal ID is available on the web and embeddable surfaces, and it can be self-hosted.
Behind Cal ID is Cal ID, and the product first shipped in 2026. Among its 5 catalogued features are Booking Embed, Shortcode Support, and Gutenberg Block. The interface is available in English and Polish.
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