Free online CSS Popover Generator. Create popovers using the native Popover API with custom positions, animations, and styles. Live preview, one-click copy HTML+CSS code. Client-side, no installation needed.
Zero Dependencies · Works OfflineThe CSS Popover API, introduced in 2023, provides a declarative way to create popovers without JavaScript libraries. It automatically handles stacking context (top-layer), focus management, and accessibility.
popover attribute@starting-style and transition animationsChrome 114+, Edge 114+, Safari 17+, Firefox 125+ natively support the API. Unsupported browsers can use @oddbird/popover-polyfill as a fallback.
The CSS Popover API is a browser-native API for creating popovers using the HTML popover attribute and CSS ::backdrop pseudo-element, without JavaScript libraries. It automatically handles stacking context, focus management, and accessibility, making it a lightweight alternative to third-party popover libraries.
The Popover API is natively supported in Chrome 114+, Edge 114+, Safari 17+, and Firefox 125+. For unsupported browsers, you can use a polyfill or fall back to traditional tooltip implementations.
Popovers typically contain richer content (forms, menus, descriptive text) and are interactive, requiring manual dismissal. Tooltips generally display brief hint text that appears on hover and disappears automatically. The Popover API is better suited for scenarios requiring user interaction.
Use the CSS @starting-style rule and transition properties to add animations to Popovers. For example, set opacity from 0 to 1 with a transition, combined with transform for scale or slide effects. This tool provides several preset animations and allows custom CSS transition parameters.
The popover attribute supports two values: auto and manual. In auto mode, clicking outside the popover or pressing Esc automatically closes it. In manual mode, the popover can only be closed via JavaScript's hidePopover() method. CSS anchor-positioning can control the popover's position relative to the trigger element.