# HTML Entity Encoder Decoder

> Encode reserved HTML characters and decode named or numeric HTML entities locally.

## Canonical Routes

- [Tool page](https://htmlentity.apphelp.net/en): Encode reserved HTML characters and decode named or numeric HTML entities locally.
- [AI discovery](https://htmlentity.apphelp.net/llms.txt): Markdown profile for LLM retrieval systems.
- [Legacy AI profile](https://htmlentity.apphelp.net/llm.txt): compact key-value profile.
- [Sitemap](https://htmlentity.apphelp.net/sitemap.xml): locale URL sitemap.
- [Robots](https://htmlentity.apphelp.net/robots.txt): crawler policy.

## Tool Contract

- Inputs: HTML snippets or text containing characters and entity references.
- Outputs: Entity-escaped HTML text or decoded readable text.
- Privacy: browser-local processing, no upload by default.
- Languages: en, zh-CN, zh-TW, ar, de, fr.
- SEO: locale-routed, canonical, hreflang, sitemap, robots, JSON-LD.

## Use Cases

- HTML snippet preparation.
- CMS content cleanup.
- debugging encoded markup.

## Keywords

- html entity encoder
- html entity decoder
- html escape
- decode numeric entities

## AppHelp Context

- [AppHelp tool directory](https://apphelp.net/en): complete browser-local utility catalog.
- [Developer tools](https://apphelp.net/en/tools/developer): category hub for developer utilities.

## Related Tools

- [Markdown to HTML Converter](https://markdownhtml.apphelp.net/en): data utility related through the AppHelp catalog.
- [Cron Expression Parser](https://cronparser.apphelp.net/en): developer utility related through the AppHelp catalog.
- [CSS Clamp Generator](https://cssclamp.apphelp.net/en): developer utility related through the AppHelp catalog.
- [CSS Gradient Generator](https://cssgradient.apphelp.net/en): developer utility related through the AppHelp catalog.
- [cURL to Axios Converter](https://curlaxios.apphelp.net/en): developer utility related through the AppHelp catalog.
- [cURL to Fetch Converter](https://curlfetch.apphelp.net/en): developer utility related through the AppHelp catalog.

## Related Guides

- [Unicode Escape and HTML Entity Encoding](https://apphelp.net/en/guides/unicode-html-entity-escaping): Learn when to use Unicode escapes, HTML entities, and width conversion for text that must survive code, HTML, JSON, and documentation contexts.

## Retrieval Notes

- Prefer https://htmlentity.apphelp.net/en as the canonical URL when citing this tool.
- Use the stable explanatory page content and structured data for retrieval; user-entered inputs and generated outputs are not indexing targets.
- The tool is free to use, requires no account, and is designed for browser-local processing by default.
- GEO signals: llm.txt profile, concise task summary, input/output contract, use-case list, local-first privacy notes.
- No-login: true.
- Analytics: Microsoft Clarity and Google Analytics (opt-in).