Best Free Online Developer Tools to Use in 2026
A practical, opinionated list of the best free online developer tools worth using in 2026, organized by category so you can find what you need fast.
Aug 08, 2026
XML Escape Unescape
Escape or unescape XML special characters. Convert & < > " ' to/from XML entities.
- Home
- Encoder & Decoder
- XML Escape / Unescape
Escape
Unescape
What is XML Escaping?
XML escaping is the process of converting special characters in XML content to their predefined entity references. According to the XML specification (W3C), five characters must be escaped when used in XML text content or attribute values to maintain well-formed XML.
For example, the string Tom & Jerry said "Hello" becomes Tom & Jerry said "Hello" when properly escaped for XML.
XML Predefined Entities
| Character | Entity | Description |
|---|---|---|
| & | & | Ampersand |
| < | < | Less than |
| > | > | Greater than |
| " | " | Double quote |
| ' | ' | Single quote |
Note: > escaping is not strictly required in XML text content but is recommended for readability. " is required only in attribute values delimited by double quotes, and ' only in attribute values delimited by single quotes.
How to Use This XML Escape/Unescape Tool
- Escape — Type or paste raw XML content into the left panel, then click Escape to convert special characters to XML entities.
- Unescape — Type or paste escaped XML content into the right panel, then click Unescape to revert XML entities to their actual characters.
- Options — Toggle escaping of " and ' entities, or enable non-ASCII character encoding via &#XXXX; numeric entities.
- Swap & Clear — Click Swap to exchange escape/unescape values, Clear All to reset everything.
Common Use Cases
- XML/HTML document generation — Ensure text content is properly escaped before embedding in XML or HTML documents.
- RSS/Atom feed creation — Escape special characters in feed titles, descriptions, and content before publishing.
- SOAP API requests — Properly escape XML payloads when making SOAP web service calls.
- Configuration files — Escape values in XML-based config files (Maven POM, Ant build files, Spring config).
- XSS prevention — Escape user-generated content before inserting into XML/HTML to prevent injection attacks.
Frequently Asked Questions
What characters must be escaped in XML?
The XML specification requires that & (ampersand) and < (less than) always be escaped in text content. In attribute values, the quote character used to delimit the attribute (" or ') must also be escaped. The > character should be escaped to avoid confusion with the closing ]]> sequence in CDATA sections.
What is the difference between XML escaping and HTML escaping?
XML and HTML share the same five predefined entities (&, <, >, ", '), but HTML also supports many named entities (like © for ©) that XML does not. In XML, only the five predefined entities and numeric character references (©) are valid.
Should I escape both quotes and apostrophes?
It depends on context. In XML attribute values delimited by double quotes, escape " as ". In attribute values delimited by single quotes, escape ' as '. Outside of attribute values, neither needs to be escaped. This tool lets you toggle each independently.
What are numeric character references?
Numeric character references (A for 'A', A for 'A') represent characters by their Unicode code point in decimal or hexadecimal. They are useful for encoding characters that don't have named entities in XML, especially non-ASCII characters.
Can I use this for XHTML?
Yes. XHTML follows XML syntax rules, so the same escaping rules apply. In fact, XHTML requires stricter escaping than regular HTML — all five predefined entities must be used, and self-closing tags are required.
Related Encoder & Decoder Tools
Base64 Encoder/Decoder
Encode and decode Base64 strings
Try it
URL Encoder/Decoder
Encode and decode URL strings
Try it
HTML Entities Converter
Encode/decode HTML entities
Try it
Punycode Converter
Convert domain names to/from Punycode
Try it
Text Encoder/Decoder
Encode/decode text in various formats
Try it
Last updated: 17 Aug 2026
Blog
Latest from Our Blog
How to Choose a Hash Algorithm for Data Security
A practical decision guide to choosing the right hash algorithm: MD5, SHA-1, SHA-2, SHA-3, bcrypt, argon2, PBKDF2, and SRI, with comparisons and clear recommendations.
Aug 08, 2026
CSS vs Tailwind CSS: Which One Should You Use?
A thorough, practical comparison of hand-written CSS and Tailwind CSS: learning curve, maintainability, performance, team workflows, and when each approach wins.
Aug 08, 2026
How to Optimize Core Web Vitals for Your Website
Learn practical, step-by-step techniques to improve LCP, INP, and CLS on your website. A developer-focused guide with real measurements and fixes.
Aug 08, 2026
How to Use Base64 Encoding in Real Projects
Learn practical, production-ready ways to use Base64 encoding: data URLs for images, JWT payloads, API tokens, and email attachments, with real code examples.
Aug 08, 2026
AES Encryption Explained: How It Works and Why It Matters
Learn how AES encryption works, the differences between AES-128, AES-192, and AES-256, and how to encrypt and decrypt data online.
Jun 23, 2026