What is HTML Encoder/Decoder?
The HTML Encoder/Decoder is an essential tool for handling HTML special characters. Convert <, >, &, " and other special characters to HTML entities (like <, >, &) to prevent XSS attacks and HTML injection. Supports four modes: standard encoding (common entities), decoding (entity restoration), numeric encoding (all chars to &#NNN;), and named entity encoding (special symbols like ©, ®, ™). All processing runs locally in your browser.
▶Use Cases5 scenarios
- ◆Preventing XSS attacks
- ◆HTML content escaping
- ◆Email template encoding
- ◆Special symbol insertion
- ◆Data sanitization
▶How to Use4 steps
- 1Enter text to encode/decode
- 2Choose processing mode
- 3Click process button
- 4Copy the result
▶Features6 features
- ✓Four encoding modes
- ✓Live character count
- ✓One-click copy
- ✓Swap input/output
- ✓Common entity reference
- ✓Runs in browser
▶FAQ5 questions
What is HTML Encoder/Decoder?
An online HTML entity encode and decode tool. Supports standard, numeric, and named entity encoding.. Everything runs locally in your browser — no uploads.
What is HTML entity encoding?
HTML entity encoding converts special characters (like <, >, &) to HTML entities (like <, >, &) so browsers display them as text instead of parsing them as HTML tags.
Why should I HTML encode?
To prevent XSS (cross-site scripting) attacks and ensure user input is safely displayed rather than executed. Encoding is essential when rendering user-submitted content.
What is the difference between numeric and named encoding?
Numeric encoding converts all characters to &#NNN; format (e.g., < = <), while named encoding uses entity names (e.g., < = <). Numeric encoding has better compatibility.
Can encoded content be decoded?
Yes. Use the decode mode to restore HTML entities back to their original characters.