HTML language support for the CodeMirror code editor

hast utility to serialize to HTML

Takes a grid of values (GeoJSON format) and a set of threshold ranges. It outputs polygons that group areas within those ranges, effectively creating filled contour isobands.

Converts a polygon to a line string.

Development-only error handler middleware

Generate HTML elements from a javascript object.

remark plugin that turns markdown into HTML to support rehype

Calculates the distance between a given point and the nearest point on a line.

Parses well-formed HTML (meaning all tags closed) into an AST and back. quickly.

Polyfill for Metadata Reflection API

Clean up user-submitted HTML, preserving allowlisted elements and allowlisted attributes on a per-element basis

Finds the central point of a GeoJSON feature, like a city or a park. Ideal for placing labels or markers.

This library converts HTML to JSON or JSON to HTML tree

Sniff the encoding from a HTML byte stream

micromark utility with list of html tag names

Render Portable Text to HTML

Convert any html content or html page to PDF

Generates an image from a DOM node using HTML5 canvas and SVG.

Pretty print JavaScript data types in the terminal and the browser

A very fast HTML parser, generating a simplified DOM, with basic element query support.