--- title: "Event Banner" slug: "event-banner" updated: 2026-10-20T19:33:51Z published: 2026-10-20T19:33:51Z canonical: "docs.blackthorn.io/event-banner" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.blackthorn.io/llms.txt > Use this file to discover all available pages before exploring further. # Event Banner Event-Related The **Event Banner** displays a main image for the event. It reads the image from the Event record: the `Image URL` field for desktop and `Thumbnail and Mobile Image URL` for mobile. If only the `Image URL` field is populated, that same image is used across all devices. ### Settings - **Image Width / Height**: set displayed dimensions - **Width Mode**: fixed or responsive width - **Image Fit**: cover, contain, fill, or none - **Image Position**: focal point (center, top, bottom-left, etc.) - **Corner Radius**: rounds image corners - **Opacity**: controls image transparency (useful for overlay effects) 💡Use a 16:9 image for desktop and a 2:1 image for mobile for best results. Populate both image fields on the Event record so Page Designer can serve the right size per device automatically.