Content Delivery Network—a distributed network of servers that delivers web content from locations geographically closest to each visitor. CDNs dramatically reduce latency and load times for global audiences while providing redundancy if one server fails. Framer hosts all sites on a global CDN automatically, ensuring fast performance worldwide without additional configuration.

A user action or system occurrence that can trigger responses, such as clicks, scrolls, form submissions, or page loads. Events drive interactivity by connecting user actions to visual feedback and functionality. Understanding events helps create responsive, engaging experiences.

The process of reducing image file sizes while maintaining acceptable visual quality for faster page loads. Optimized images can be 10x smaller than originals without noticeable quality loss, dramatically improving performance. Framer automatically optimizes uploaded images, converting to efficient formats like WebP where supported.

Generating HTML on the server before sending to browsers, improving initial load performance and SEO. SSR provides complete content to search engines and faster first paint for users. Framer uses server-side rendering for optimal performance and SEO.

Moving visual content embedded on a page for explanation, demonstration, or storytelling. Video can increase engagement but may hurt performance if it is unoptimized. Use compression, modern formats, and lazy loading to keep page load fast.

A distributed network of servers that delivers web content from locations geographically closest to each visitor, reducing latency and improving load times. CDNs also provide redundancy and protection against traffic spikes or server failures. Framer hosts all sites on a global CDN automatically for optimal worldwide performance.

The duration from requesting a page to complete rendering, critically affecting user experience and conversion rates. Users expect pages to load in 2-3 seconds; each additional second significantly increases bounce rates. Optimize images, limit scripts, and leverage caching to minimize load time.

A self-contained interactive element that provides specific functionality, often embeddable from third-party services. Widgets extend site capabilities without custom development—chat widgets, calendars, and forms are common examples. Consider performance impact when adding widgets and lazy load when possible.

Core Web Vitals are a set of user-focused performance metrics used by Google to measure real page experience, including loading speed, responsiveness, and visual stability.

Cumulative Layout Shift (CLS) quantifies visual instability by measuring how much elements move unexpectedly during page load and interaction.

In Framer, static generation helps performance by serving ready-made pages wherever possible, reducing runtime work and making published sites feel faster.

In Framer, code splitting supports faster initial loads by avoiding unnecessary JavaScript on first view and loading additional code only when it becomes relevant.