Dictionary Compression
Dictionary compression is an advanced compression technique where a shared "dictionary" of common data patterns is used to compress multiple files more efficiently than compressing each one individually. Speed Kit uses this for HTML documents, which can reduce their size by 80-90% beyond standard compression. This makes features like Predictive Preloads extremely bandwidth-efficient.
Related web performance terms
- DOM (Document Object Model)
The DOM is a tree-like representation of all the elements in an HTML document that is created by the browser when it loads a page.
- DOM Content Loaded
DOM Content Loaded (DOMContentLoaded or DCL) is a browser event that fires when the initial HTML document has been completely loaded and parsed, without waiting for stylesheets, images, and subframes to finish loading.
- DOM Size
DOM Size refers to the total number of elements (nodes) and the complexity of their nesting within a page's HTML structure.
- Deferred JS loading
Deferred JS loading is a technique for loading JavaScript files in a non-blocking way using the `defer` attribute on a `<script>` tag.