# Install vnu

Nu Markup Checker: command-line and server HTML validator. Version 26.5.29 via Homebrew; verified 2026-05-30.

## Install

```sh
sudo av install brew:vnu
```

Additional install commands:

### macOS

- Homebrew (100%):

```sh
brew install vnu
```

  Evidence: local Homebrew formula metadata

## Package Facts

- **Package key:** brew:vnu
- **Package manager:** Homebrew
- **Package manager URL:** <https://formulae.brew.sh/formula/vnu>
- **Version:** 26.5.29
- **Source summary:** Nu Markup Checker: command-line and server HTML validator
- **Homepage:** <https://validator.github.io/validator/>
- **Repository:** <https://github.com/validator/validator>
- **Upstream docs:** <https://validator.github.io/validator>
- **License:** MIT
- **Source archive:** <https://registry.npmjs.org/vnu-jar/-/vnu-jar-26.5.29.tgz>
- **Last updated:** 2026-05-30T15:58:02Z
- **Generated:** 2026-06-10T07:18:26+00:00

## Executables

- vnu (cli)
- vnu (alias)

## Dependencies

- openjdk

## Install Behavior

- Post-install hook: not defined
- Bottle: available on all

## Freshness

- Page generated: 2026-06-10
- Package-manager version: 26.5.29
- Package-manager updated: 2026-05-30
- Local data status: ok
- Upstream repository: https://validator.github.io/validator/
- info: Release/tag comparison is only available for GitHub repositories.

## Sicherheitshinweise

no executable entrypoint in the package index.

- **Geiger risk:** green / low
- no executable entrypoint in the package index

## Source Database Details

- **Source Database:** Homebrew formula API
- **Tap:** homebrew/core
- **Full Name:** vnu
- **Version Scheme:** 1
- **Revision:** 0
- **Bottle Stable Root URL:** <https://ghcr.io/v2/homebrew/core>
- **Deprecated:** no
- **Disabled:** no
- **Keg Only:** no
- **URL Keys:** stable


## Related Links

- [Source-control packages](https://www.automicvault.com/de/pkg/source-control-tools/) - Belongs to a source-control command family.
- [Terminal utility packages](https://www.automicvault.com/de/pkg/terminal-utilities/) - Matched terminal and command-line workflow metadata.
- [Text processing packages](https://www.automicvault.com/de/pkg/text-processing-tools/) - Matched text, document, or structured-data processing metadata.
- [Developer build packages](https://www.automicvault.com/de/pkg/developer-build-tools/) - Matched build, compiler, generator, or developer workflow metadata.
- [openjdk](https://www.automicvault.com/de/pkg/brew/openjdk/) - Runtime dependency declared by Homebrew.
- [kubeconform](https://www.automicvault.com/de/pkg/brew/kubeconform/) - Shares av.db curated category or tags: cli, developer-tools, validation.
- [check-jsonschema](https://www.automicvault.com/de/pkg/brew/check-jsonschema/) - Shares av.db curated category or tags: cli, developer-tools, validation.
- [yamale](https://www.automicvault.com/de/pkg/brew/yamale/) - Shares av.db curated category or tags: cli, developer-tools, validation.
- [epubcheck](https://www.automicvault.com/de/pkg/brew/epubcheck/) - Shares av.db curated category or tags: cli, developer-tools, validation.
- [templ](https://www.automicvault.com/de/pkg/brew/templ/) - Shares av.db curated category or tags: cli, developer-tools, html, web-development.
- [action-validator](https://www.automicvault.com/de/pkg/brew/action-validator/) - Shares av.db curated category or tags: cli, developer-tools, validation.
- [rnv](https://www.automicvault.com/de/pkg/brew/rnv/) - Shares av.db curated category or tags: cli, developer-tools, validation.
- [libxml2](https://www.automicvault.com/de/pkg/brew/libxml2/) - Shares av.db curated category or tags: cli, developer-tools, html.
- [gwt](https://www.automicvault.com/de/pkg/brew/gwt/) - Local package facts share a topical domain. Shared terms: cli, developer, developer-tools, development, openjdk.

## Sources

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