Does this protect against all forms of XSS?

HTML-encoding text before displaying it in HTML content is one important defense, but full protection depends on context (attributes, scripts, URLs) and should follow established security guidance.

Why is the apostrophe encoded as ' instead of '?

' is universally supported across all HTML versions, while ' is not valid in older HTML specifications.

Does this encode every character, or just five?

Just the five characters with special meaning in HTML: & " ' — normal letters and numbers are left unchanged.

Is my text uploaded anywhere?

No — encoding happens entirely in your browser.

Can I encode a whole HTML document with this?

Yes, though encoding an entire document will also escape its actual tags — this tool is best used on plain text or specific values, not full markup you want to keep intact.

Will encoded text display correctly in a browser?

Yes — when placed back into HTML, the encoded entities render as the original characters exactly as typed.

Herramientas de Codificación

Codificador HTML — Herramienta Gratuita en Línea

Escapa caracteres especiales para incrustarlos de forma segura en HTML.

Usar Esta Herramienta

Funciona en Tu Navegador
Resultados Instantáneos
100% Privado

Your Text

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What Is HTML Encoding?

HTML encoding replaces characters that have special meaning in HTML — &, <, >, " and ' — with their corresponding entity codes (&, <, >, ", '), so that text containing those characters displays correctly instead of being misinterpreted as markup.

This matters whenever raw text (like a username, comment, or code snippet) needs to be safely displayed inside an HTML page without accidentally being parsed as tags or breaking the page's structure.

¿Quién Usa Esta Herramienta?

Para Empresas

Prepare user-submitted text for safe display inside an HTML page.

Para Uso Personal

Encode a snippet of code so it displays correctly in a blog post.

Para Estudiantes

Learn why HTML encoding matters for a web development or security course.

Para Oficinas

Prepare a value containing special characters for an HTML email template.

Por Qué Usar Esta Herramienta

Características Clave

All Five Key Characters

Escapes &, <, >, " and ' consistently.

Instant Encoding

Output updates immediately as you type.

100% Private

Your text is never uploaded or stored.

One-Click Copy

Copy the encoded result straight to your clipboard.

El Resultado

Beneficios

Prevents Broken Markup

Safely display text containing angle brackets or ampersands.

Useful for Security Awareness

See exactly how HTML encoding neutralizes potentially unsafe input.

No Software Needed

Encode directly in the browser — no build tool required.

Paso a Paso

Cómo Usar Codificador HTML

Type or Paste Text

Add the raw text or code snippet you want to encode.

Read the Encoded Result

Special characters are replaced with their HTML entities automatically.

Copy the Result

Use the Copy button to grab the encoded text.

Especificaciones

Detalles Técnicos

Detalle	Valor
Entrada	Plain text or code snippets
Procesamiento	No practical limit — handled entirely by your browser
Salida	Encodes exactly five characters: & < > " '

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Privacidad y Seguridad

Lo que realmente sucede con tu archivo al usar esta herramienta.

100% Client-Side

This tool runs entirely inside your browser using JavaScript — nothing you type or generate is ever sent anywhere.

No Upload, Ever

There is no file upload and no server processing step — your data never leaves your device.

Works Offline

Once this page has loaded, the tool keeps working even without an internet connection.

Nothing Stored

Nothing you enter is saved on our servers — refreshing the page clears everything.

No Tracking of Your Input

We have no way to see what you type, generate or convert with this tool.

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Consejos

Encode Before Embedding User Input

Always encode untrusted text before displaying it inside HTML to prevent markup injection.

Use for Code Snippets in Articles

Encode code samples containing < and > so they display literally instead of as tags.

Preguntas Frecuentes