# laobubu/HyperMD

A WYSIWYG Markdown Editor for browsers. Break the Wall between writing and previewing.

Repository: https://github.com/laobubu/HyperMD
Canonical: https://ross.abutalabs.com/products/hypermd
Language: TypeScript
License: MIT
License Family: permissive
Topics: markdown, codemirror, markdown-editor, wysiwyg, typescript, editor
Last push: 2021-01-05T03:36:46+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3518, "days_push": 2066, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1589, forks 135 (observed 2026-08-28T04:05:08.088279+00:00)

## What it is
HyperMD is a WYSIWYG Markdown editor for browsers built as a set of CodeMirror add-ons, modes, themes, and keymaps. It renders Markdown formatting live while writing, blurring the line between editing and previewing.

## Use cases
- embed a wysiwyg markdown editor in a web app
- edit markdown with live preview while typing
- support latex math and mermaid diagrams in a markdown editor
- paste html and convert it to markdown
- upload images via clipboard or drag and drop in an editor
- add clickable todo checkboxes and footnotes to markdown editing

## When to choose
- you already use CodeMirror and want markdown wysiwyg on top of it
- you need a browser-based markdown editor with math, diagrams, and emoji support
- you want a modular, extensible editor with powerpack integrations like KaTeX or MathJax

## When to avoid
- you need a standalone desktop markdown app rather than an embeddable browser component
- you want a block-based Notion-style editor instead of CodeMirror-based editing
- you need actively maintained software with recent releases

## Facets
- artifact type: library
- maturity: maintenance
- function: editor, markdown, ui-components, file-upload
- domain: text-editors, web-development, frontend, documentation
- platform: browser, cross-platform
- tags: wysiwyg, codemirror, markdown-editor, live-preview, typescript, web-server

## Member repositories
- laobubu/HyperMD (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:08.088279+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:54:57.806379+00:00, confidence not recorded.
  - readme: https://github.com/laobubu/HyperMD (fetched 2026-08-28T04:05:08.088279+00:00, sha 2867eb99eeb7)
- Data as of 2026-08-30T08:39:29.467469+00:00.