What is the difference between HTML encoding and URL encoding?

HTML encoding uses named entities like & and < for safe display inside HTML documents. URL encoding uses percent followed by hex codes for safe use in URLs — for example ampersand becomes %26. Use HTML encoding for content inside HTML markup, URL encoding for query parameters and API endpoints.

What are the most important HTML entities?

Essential HTML entities: & is ampersand, < is less-than sign, > is greater-than sign, " is double quote, ' is apostrophe, is non-breaking space, © is copyright, ® is registered trademark, ™ is trademark, € is euro, £ is pound, — is em dash, … is ellipsis.

When should I use HTML encoding vs URL encoding?

In HTML body content use HTML entity encoding. In HTML attributes use HTML encoding and encode all quotes. In JavaScript strings use backslash escaping. In URL parameters use percent-encoding. In CSS values avoid inserting user data directly. Using the wrong encoding type for the context can still leave your application vulnerable.

HTML Entity Encoder / Decoder – Free Online Tool

Q: What are HTML entities and why are they needed?

HTML entities are character codes representing characters that have reserved meaning in HTML or cannot easily be typed. They start with ampersand and end with semicolon. Key entities: & displays ampersand, < displays less-than, > displays greater-than, " displays double quote, ' displays apostrophe, inserts a non-breaking space, © displays the copyright symbol.

Q: How do I encode HTML to prevent XSS attacks?

XSS cross-site scripting occurs when user input displays without encoding. Always encode these 5 characters in user-provided content: ampersand becomes &amp;, less-than becomes &lt;, greater-than becomes &gt;, double quote becomes &quot;, single quote becomes &#039;. Encoding these 5 characters prevents the vast majority of XSS injection attacks.

Q: What is the difference between HTML encoding and URL encoding?

HTML encoding uses named entities like &amp; and &lt; for safe display inside HTML documents. URL encoding uses percent followed by hex codes for safe use in URLs — for example ampersand becomes %26. Use HTML encoding for content inside HTML markup, URL encoding for query parameters and API endpoints.

Q: What are the most important HTML entities?

Essential HTML entities: &amp; is ampersand, &lt; is less-than sign, &gt; is greater-than sign, &quot; is double quote, &apos; is apostrophe, is non-breaking space, &copy; is copyright, &reg; is registered trademark, &trade; is trademark, &euro; is euro, &pound; is pound, &mdash; is em dash, &hellip; is ellipsis.

Q: How do I display HTML source code on a webpage?

To show raw HTML without the browser rendering it: replace less-than with &lt;, greater-than with &gt;, and ampersand with &amp;. Wrap in pre and code elements. Vicspot free html entity encode decode online tool automates this — paste HTML, click Encode Entities, copy result.

Q: Is this HTML encoder safe for sensitive content?

Yes completely safe. All encoding runs locally in your browser using JavaScript string replacement. Your content is never sent to any server, never logged, and never stored. Open browser DevTools Network tab while encoding and you will see zero outgoing requests. No login, no signup, unlimited use.

HTML Entity Encoder / Decoder

Encode special characters to HTML entities or decode HTML entities back to text. Prevent XSS vulnerabilities and display HTML code safely. Includes a reference chart of common entities.

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🛠️ HTML Entity Encoder / Decoder

Enter text with special characters

Result appears here.

Common HTML Entities

    &amp; → &
    &lt; → <
    &gt; → >
    &quot; → "
    &apos; → '
    &copy; → ©
    &reg; → ®
    &trade; → ™
    &nbsp; → (space)
    &euro; → €
  

How to Use the HTML Entity Encoder / Decoder

Paste your HTML or text containing special characters into the input box above.

Click Encode Entities to convert special characters like <, >, &, and " into their HTML entity equivalents.

Or click Decode Entities to convert HTML entities back to their original characters.

Click Copy to copy the result to your clipboard.

What Are HTML Entities?

HTML entities are special character codes used to represent characters that have special meaning in HTML, or characters that can't easily be typed on a keyboard. They start with an ampersand (&) and end with a semicolon (;). For example, < represents the less-than sign (<).

Why Encode HTML Entities?

When you include user-generated content or code snippets in an HTML page, characters like < and > would be interpreted as HTML tags. Encoding them prevents the browser from treating them as markup, which is critical for preventing Cross-Site Scripting (XSS) vulnerabilities and for displaying source code correctly.

Most Important HTML Entities

& — Ampersand & (must always be encoded in HTML attributes)

< — Less-than sign < (interpreted as start of tag if unencoded)

> — Greater-than sign > (interpreted as end of tag if unencoded)

" — Double quotation mark " (required inside attribute values)

  — Non-breaking space (prevents line breaks between words)

❓ Frequently Asked Questions — HTML Entity Encoder

What are HTML entities and why are they needed?

HTML entities are character codes for characters with reserved meaning in HTML. They start with & and end with ;.

& → & · < → < · > → >
" → " · ' → ' ·   → space

How do I encode HTML to prevent XSS attacks?

XSS (Cross-Site Scripting) occurs when user input is displayed without encoding. Always encode these 5 characters in user-provided content:

& → &
< → <
> → >
" → "
' → '

Our HTML entity encoder for XSS prevention handles all 5 automatically.

What is the difference between HTML and URL encoding?

HTML encoding — uses &name; entities for safe display inside HTML markup. Example: & → &
URL encoding — uses %XX codes for safe use in URLs. Example: & → %26

Use HTML encoding for HTML content. Use URL encoding for query parameters and API endpoints. Vicspot provides separate free tools for both.

Most important HTML entities to know

&=& · <=< · >=> · "=" · '='
™=™ · €=€ · £=£
—=— · –=– · …=…

How do I display HTML source code on a webpage?

To show raw HTML code without the browser rendering it:

Replace < with <
Replace > with >
Replace & with &
Wrap in <pre><code>...</code></pre>

Our free html entity encode decode online tool does this automatically — paste HTML → Encode Entities → copy.

When to use HTML vs URL vs JavaScript encoding?

HTML body content → HTML entity encoding
HTML attributes → HTML encoding + all quotes
JavaScript strings → backslash escaping
URL query parameters → percent-encoding
CSS values → never insert user data directly

Is this HTML encoder safe for sensitive content?

100% safe and private. All encoding runs locally in your browser with JavaScript string replacement. Your content is never sent to any server, never logged, never stored.

Verify: open DevTools → Network tab → encode something → zero outgoing requests. No login, no signup, unlimited use.