# html2markdown を Homebrew でインストール

html2markdown のインストール経路、実行ファイル、メタデータ、AI エージェント向けセキュリティノートを確認します。

## インストール

```sh
sudo av install brew:html2markdown
```

追加のインストールコマンド:

### macOS

- Homebrew (100%):

```sh
brew install html2markdown
```

  証拠: local Homebrew formula metadata

## パッケージ情報

- **パッケージキー:** brew:html2markdown
- **パッケージマネージャ:** Homebrew
- **パッケージマネージャページ:** <https://formulae.brew.sh/formula/html2markdown>
- **バージョン:** 2.5.2
- **ソース概要:** Convert HTML to Markdown
- **ホームページ:** <https://html-to-markdown.com>
- **リポジトリ:** <https://github.com/JohannesKaufmann/html-to-markdown>
- **上流ドキュメント:** <https://github.com/JohannesKaufmann/html-to-markdown>
- **ライセンス:** MIT
- **ソースアーカイブ:** <https://github.com/JohannesKaufmann/html-to-markdown/archive/refs/tags/v2.5.2.tar.gz>
- **最終更新:** 2026-06-07T15:08:40Z
- **生成日時:** 2026-07-08T18:08:21+00:00

## 実行可能ファイル

- html2markdown (cli)
- html2markdown (エイリアス)

## ビルド依存関係

- go

## インストール挙動

- post-install フック: 未定義
- Bottle: 利用可能 対象 arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux

## バージョンと鮮度

- ページ生成日: 2026-07-08
- マネージャ版: 2.5.2
- マネージャ更新日: 2026-06-07
- ローカルデータ: OK
- 上流リポジトリ: https://github.com/JohannesKaufmann/html-to-markdown
- 検出された最新: v2.5.2 (最新)
## プロジェクトの歴史と使われ方

html2markdown is the Homebrew-packaged command-line face of Johannes Kaufmann's html-to-markdown project, a Go implementation for turning HTML into readable Markdown. Its appeal comes from using an HTML parser and conversion rules instead of regular-expression scraping.

### プロジェクトの歴史

The repository was created in 2018 and presents the project as a Go library that converts HTML to Markdown with parser-based handling for unknown input. The README emphasizes extensibility through rules and plugins, with support for GitHub-flavored Markdown features such as tables, strikethrough, and task-list items.

The release stream shows steady versioned packaging, with the 1.x series active through 2024 and the 2.x series appearing afterward. Release assets include platform archives and package artifacts, which explains why a library-oriented Go project also fits Homebrew as a CLI formula.

### 採用の歴史

The project is visible in Go documentation, Homebrew, and Debian's Go library packaging. That adoption pattern is common for Go conversion libraries: developers embed the library in migration tools, while package managers expose a small command-line converter for one-off document cleanup.

### 使われ方

Typical use cases are converting copied web fragments, archived pages, CMS exports, or generated HTML into Markdown for documentation systems. The README's rule and plugin APIs make it useful when a team needs repeatable conversion rules instead of a generic all-purpose document converter.

### パッケージ好きにとっての重要性

For package nerds, html2markdown is interesting because it occupies the narrow lane between heavyweight converters such as Pandoc and tiny ad hoc scripts. It packages a parser-backed Go library as an installable utility, giving shell users a focused HTML-to-Markdown tool with binaries across platforms.

### タイムライン

- 2018: The html-to-markdown repository was created on GitHub.
- 2020: The v1.2.0 release continued the early 1.x line.
- 2021: v1.3.0 added nested-list focused work.
- 2023: v1.4.0 added escaping control, followed by v1.5.0 list-start work.
- 2024: v1.6.0 landed before the alpha 2.0 releases.
- 2025: v2.3.0 identified table-plugin work in the release title.
- 2026: v2.5.2 shipped with multiple platform artifacts.

### Related projects

- The README names Turndown for JavaScript and lunny/html2md as related projects. In practice, users also compare this kind of tool with Pandoc, html2text, and bespoke site-migration scripts.

### ソース

- GitHub repository and release metadata document the repository creation date and versioned release history.
- Homebrew and Debian package pages support package-manager adoption.
- The GitHub README documents parser-based conversion, rules, plugins, security caveats, and related projects.


## セキュリティノート

html2markdown に一致するローカルシークレット処理マニフェストは見つかりませんでした。将来の対応で安定したパッケージ URL を使えるよう、Nucleus パッケージメタデータはここに公開されています。


## ソースデータベース詳細

- **Source Database:** Homebrew formula API
- **Tap:** homebrew/core
- **Full Name:** html2markdown
- **Version Scheme:** 0
- **Revision:** 0
- **Head Version:** HEAD
- **Bottle Stable Root URL:** <https://ghcr.io/v2/homebrew/core>
- **Deprecated:** no
- **Disabled:** no
- **Keg Only:** no
- **URL Keys:** head, stable


## 関連リンク

- [Terminal utility packages](https://www.automicvault.com/ja/pkg/terminal-utilities/) - Matched terminal and command-line workflow metadata.
- [Text processing packages](https://www.automicvault.com/ja/pkg/text-processing-tools/) - Matched text, document, or structured-data processing metadata.
- [Developer build packages](https://www.automicvault.com/ja/pkg/developer-build-tools/) - Matched build, compiler, generator, or developer workflow metadata.
- [Networking and protocol packages](https://www.automicvault.com/ja/pkg/networking-protocol-tools/) - Matched network, protocol, or remote-service metadata.
- [go](https://www.automicvault.com/ja/pkg/brew/go/) - Build dependency declared by Homebrew.
- [html2text](https://www.automicvault.com/ja/pkg/brew/html2text/) - Shares av.db curated category or tags: cli, conversion, converter, developer-tools, html.
- [markdown](https://www.automicvault.com/ja/pkg/brew/markdown/) - Shares av.db curated category or tags: cli, conversion, developer-tools, html, markdown.
- [vilistextum](https://www.automicvault.com/ja/pkg/brew/vilistextum/) - Shares av.db curated category or tags: cli, conversion, developer-tools, html, markup.
- [discount](https://www.automicvault.com/ja/pkg/brew/discount/) - Shares av.db curated category or tags: cli, developer-tools, html, markdown, markup.
- [htmldoc](https://www.automicvault.com/ja/pkg/brew/htmldoc/) - Shares av.db curated category or tags: cli, conversion, converter, developer-tools, html.
- [pandoc](https://www.automicvault.com/ja/pkg/brew/pandoc/) - Shares av.db curated category or tags: cli, developer-tools, html, markdown, markup.
- [comrak](https://www.automicvault.com/ja/pkg/brew/comrak/) - Shares av.db curated category or tags: cli, developer-tools, markdown, markup.
- [hoedown](https://www.automicvault.com/ja/pkg/brew/hoedown/) - Shares av.db curated category or tags: cli, developer-tools, markdown, markup.

## Combined YAML source

View the package source record on GitHub. [combined/html2markdown.yml](https://github.com/automic-vault/db/blob/main/combined/html2markdown.yml)


## ソース

- Nucleus package database
- Geiger risk classifier
- package-page enrichment
- curated package history
- package version freshness
- av.db category and tag curation
- package relationship graph
- cross-ecosystem install command graph