Encode and decode HTML entities
&
Ampersand
<
Less than
>
Greater than
"
Double quote
'
Single quote
Non-breaking space
©
Copyright
®
Registered
™
Trademark
€
Euro
£
Pound
¥
Yen
Free online HTML entities encode and decode tool. Convert special characters like <, >, &, quotes to HTML entities (< > & ") and vice versa. Supports both encoding (plain text → entities) and decoding (entities → plain text). Reference table of the 12 most popular HTML entities with characters, entity code and names. Swap button to quickly reverse input/output. Essential tools for web developers to safely handle user input, avoid XSS attacks, and display code snippets in HTML.
HTML entities là cách biểu diễn ký tự đặc biệt trong HTML mà không gây conflict với syntax. Ví dụ: < và > là tag delimiters, nên để hiển thị chúng phải dùng < và >. Quan trọng hơn, encode user input trước khi render trong HTML là biện pháp bảo mật cơ bản chống XSS (Cross-Site Scripting) attacks. Công cụ này giúp bạn nhanh chóng encode/decode text, debug HTML issues, và Learn about common entities
We not only design websites, but also help businesses build strong digital brands. Providing comprehensive website design services from design to SEO optimization. Please contact Mavis Digital immediately to create breakthrough, effective and sustainable technology solutions for your business in Ho Chi Minh.
Create .envand.env.example file for project.
Generate .gitignore for Node.js, Python, Java.
Create mock JSON data for API testing.
Format and analyze API response.
Test REST API: GET, POST, PUT, DELETE.
Convert Binary, Hex, Base32.
Base64 encoding/decoding.
Convert Decimal, Binary, Hex.
Create visual CSS box-shadow.
Calculate Linux file permissions.
Check WCAG accessibility.
Generate random color palette.