HTML Escape Tool for API Responses

About This Tool

Working with REST APIs, GraphQL endpoints, and webhooks means constantly processing HTML response data. Raw API responses are typically minified — stripped of all whitespace and line breaks to minimize payload size — making them virtually impossible to read without formatting. This tool transforms those compact responses into well-structured, readable output that reveals the data hierarchy and makes it easy to locate specific values. Paste a response from Postman, cURL, browser DevTools Network tab, or any API client, and instantly see the formatted result. The tool validates the response structure during processing, catching malformed responses that might cause subtle bugs in your application. For developers debugging production issues, this immediate visibility into API data structures is invaluable.

What is HTML Escape Tool?

An HTML escape tool converts special characters into their HTML entity equivalents to prevent them from being interpreted as HTML markup. The five critical characters are: & (ampersand) → &amp;, < (less than) → &lt;, > (greater than) → &gt;, " (double quote) → &quot;, and ' (single quote) → &#39;. Escaping is essential for security (preventing XSS attacks), displaying code in HTML documents, and ensuring special characters render correctly in web pages. The reverse operation (unescaping) converts entities back to their original characters. This tool supports both directions, making it useful for both encoding content for web display and decoding HTML entities for processing.

How to Use This Tool

1. Paste your text.
2. Click Escape HTML to convert special characters to entities.
3. Click Unescape HTML to convert entities back to characters.
4. Copy the result.

Common Use Cases

• Formatting raw API response bodies for debugging
• Processing webhook payloads for analysis
• Cleaning up GraphQL query responses
• Inspecting third-party API data structures

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