URL Encoder for API Responses
Encode and decode URL parameters and special characters. Free browser tool.
Quick Answer
Paste text to URL-encode special characters for safe URL use, or decode percent-encoded URL strings.
How to Use the URL Encoder for API Responses
- Use the input area to provide your data.
- The tool processes it instantly in your browser.
- Copy or download the result.
Frequently Asked Questions
- How do I format an API response?
- Copy the JSON response body from your API client (Postman, cURL, browser DevTools), paste it here, and click the action button to process it instantly.
- What is the difference between URL encoding and URI encoding?
- They are essentially the same concept. encodeURIComponent() (used here) encodes all characters except letters, digits, and - _ . ! ~ * ' ( ). Use it for individual URL components like query values.
About This Tool
Working with REST APIs, GraphQL endpoints, and webhooks means constantly processing URL 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 URL Encoder / Decoder?
A URL encoder/decoder converts text to and from percent-encoding (also called URL encoding), which is the format required for safely including special characters in URLs. Characters outside the unreserved set (letters, digits, -, _, ., ~) must be percent-encoded using their hexadecimal code points prefixed by %. For example, a space becomes %20, & becomes %26, and = becomes %3D. URL encoding is essential when constructing query strings, embedding user input in URLs, working with REST API endpoints that accept special characters in parameters, encoding redirect URLs, and processing form data submitted via HTTP GET requests. The decoder reverses the process, converting %XX sequences back to their original characters.
How to Use This Tool
- Paste text with special characters and click Encode URL.
- Paste a URL-encoded string and click Decode URL.
- Copy the encoded or decoded 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
Examples
Hello World & more!
Hello%20World%20%26%20more%21
Explore More Variations
Related Data Tools
Popular Tools
Featured Tools
Discover more tools across our collection — updated daily.