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HTML Encoder/Decoder for Ruby

Free online html encoder/decoder with Ruby code examples

Working with html encoder/decoder in Ruby? Our free online html encoder/decoder helps Ruby developers format, validate, and process data instantly. Below you will find Ruby code examples using CGI (built-in) so you can achieve the same result programmatically in your own projects.

Try the HTML Encoder/Decoder Online

Use our free HTML Encoder/Decoder directly in your browser — no setup required.

Open HTML Encoder/Decoder

Ruby Code Example

require 'cgi'

raw = '<script>alert("XSS")</script>'

# Encode
encoded = CGI.escapeHTML(raw)
puts encoded

# Decode
decoded = CGI.unescapeHTML(encoded)
puts decoded

Quick Setup

Library: CGI (built-in)
# Built-in library — no installation needed

Ruby Tips & Best Practices

  • CGI.escapeHTML encodes &, <, >, and quotes
  • ERB::Util.html_escape is an alias in Rails
  • Use the htmlentities gem for full HTML entity support

Frequently Asked Questions

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