html-to-image is a JavaScript library and client-side screenshot utility that transforms DOM elements into image formats such as PNG, JPEG, or SVG. It functions as a DOM-to-canvas renderer, using the browser's native rendering capabilities to convert document nodes into rasterized images or canvas elements.
The library leverages SVG foreignObject serialization to capture live DOM content, which is then rasterized into pixel-based formats. It includes specialized exporters for generating binary Blobs or raw RGBA pixel data as typed arrays.
The tool provides configurations for image appearance, including background colors, dimensions, and quality. It also features a filtering system to exclude specific document nodes from the final output and manages external asset loading through font embedding optimizations and custom resource fetching configurations.
