HTML Encoder
Convert special HTML characters into safe entities. Essential for preventing XSS attacks, safely embedding user content, and displaying code samples in HTML pages.
Real-time encoding
XSS safe output
File upload supported
Plain Text / HTML Input
Encoded Output
Paste or UploadPaste raw HTML or upload a file to encode
Choose ModeStandard (5 key entities) or all non-alphanumeric
Safe OutputDangerous characters are replaced with &entity; codes
Copy or SaveCopy to clipboard or download the encoded file
XSS PreventionEncode untrusted user input before inserting it into HTML to prevent script injection
Code SnippetsDisplay code samples on web pages without the browser interpreting them as actual HTML
Email TemplatesSafely embed special characters in HTML email templates to ensure correct rendering
About HTML Encoder
What Is an HTML Encoder?
This tool converts special characters (like <, >, and &) into their safe HTML entity equivalents — necessary when displaying raw text or code inside a webpage without it being misinterpreted as actual markup.
How to Use the HTML Encoder
- Paste your text
- Click Encode
- Copy the HTML-safe encoded output
Key Features
- Encodes all standard reserved characters
- Instant conversion
Who Uses This Tool
Developers displaying code snippets or raw text safely inside HTML content. Content editors preparing text that includes special characters for publishing.
Frequently Asked Questions
Why do I need to encode these characters?
Without encoding, characters like < can be interpreted as the start of an HTML tag, breaking the page's rendering.
Is this tool free?
Yes, encoding HTML is completely free.
Frequently Asked Questions
What does HTML encoding do?
HTML encoding converts reserved HTML characters into their entity equivalents. For example, < becomes < and & becomes &. This ensures the browser displays them as text rather than interpreting them as HTML markup.
When should I use "encode all non-alphanumeric"?
Use this mode when you want maximum safety — it converts every character that isn't a letter or number into its numeric entity (&#XX;). This is useful in highly security-sensitive contexts like email headers or certain XML documents.
What characters are encoded by default?
Standard mode encodes the 5 characters that have special meaning in HTML: & (ampersand), < (less-than), > (greater-than), " (double quote), and ' (apostrophe). These cover most XSS and rendering issues.
Does encoding protect against SQL injection?
No — HTML encoding only makes content safe for HTML contexts. For SQL, use parameterized queries or prepared statements. For URLs, use URL encoding (%20 style). Each context requires its own encoding method.