Skip to main content

{ }onlineviewer.dev

All tools JSON XML HTML CSS JavaScript Text Base64 JWT Markdown Blog

Home / All tools / HTML Encode

HTML Entity Encoder

Encode special HTML characters to safe HTML entity references.

Runs in your browser. Nothing is uploaded.

Input HTML

HTML Entities Output

Ready

Chars: 0Words: 0Lines: 1Size: 0 B

Related: HTML Preview HTML Formatter HTML Minifier HTML Decode

{ }onlineviewer.dev

Free developer tools that run in your browser. Nothing you paste is uploaded.

Tools

All tools
JSON
XML
HTML
CSS
JavaScript
Text
Base64
JWT
Markdown

Popular

JSON Formatter
JSON Validator
YAML to JSON
Base64 Decode
JWT Decoder
Diff Checker
XML to JSON
px to rem

Blog

Debug API responses privately
Format JSON and convert to YAML
XML to JSON guide
HTML preview and responsive testing
JavaScript minification
CSS px to rem
Text diff and encoding
All posts

© 2026 onlineviewer.dev · Free developer tools that run in your browser.