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.

Инструменты кодирования

Кодировщик HTML — Бесплатный онлайн-инструмент

Экранируйте специальные символы для безопасного встраивания в HTML.

Использовать этот инструмент

Работает в браузере
Мгновенные результаты
100% приватно

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.

Кто использует этот инструмент?

Для бизнеса

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

Для личного использования

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

Для студентов

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

Для офисов

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

Зачем использовать этот инструмент

Основные возможности

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.

Результат

Преимущества

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.

Пошагово

Как использовать Кодировщик 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.

Характеристики

Технические детали

Параметр	Значение
Ввод	Plain text or code snippets
Обработка	No practical limit — handled entirely by your browser
Вывод	Encodes exactly five characters: & < > " '

Это можно проверить

Конфиденциальность и безопасность

Что на самом деле происходит с вашим файлом при использовании этого инструмента.

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.

Как улучшить результат

Советы

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.

Часто задаваемые вопросы