Free URL Encode Decode Tool | Online for Developers
Free online URL encode decode tool for developers. Instantly encode URLs, decode URI components, convert JSON to x-www-form-urlencoded. No ads, no login.
What is URL Encoding and Decoding
URL encoding is the process of converting characters into a format that can be safely transmitted over the internet. This is necessary because URLs can only contain a limited set of characters. URL decoding is the reverse process, converting encoded characters back to their original form.
How to Use This URL Encode Decode Tool
Paste Text
Paste your URL or text into the input box. The tool supports multi-line text and special characters.
Choose Action
Click 'Encode' for parameters, 'Encode Full URL' for entire links, or 'Decode' to reverse the process.
Copy Result
The result appears instantly in the right panel. Use the copy button or download it as a text file.
Example Input
Hello World & Test=1 https://example.com/search?q=hello world&lang=中文
Example Output (Encoded)
Hello%20World%20%26%20Test%3D1 https://example.com/search?q=hello%20world&lang=%E4%B8%AD%E6%96%87
URL Encoding for JavaScript, PHP, Node.js
JavaScript
// Encode URL parameters
const encoded = encodeURIComponent('Hello World & Test=1');
// Result: Hello%20World%20%26%20Test%3D1
// Encode full URL
const encodedUrl = encodeURI('https://example.com/search?q=hello world');
// Result: https://example.com/search?q=hello%20world
// Decode
const decoded = decodeURIComponent(encoded);PHP
// Encode URL parameters
$encoded = urlencode('Hello World & Test=1');
// Result: Hello%20World%20%26%20Test%3D1
// Encode full URL
$encodedUrl = rawurlencode('https://example.com/search?q=hello world');
// Result: https%3A%2F%2Fexample.com%2Fsearch%3Fq%3Dhello%20world
// Decode
$decoded = urldecode($encoded);Node.js
// Encode URL parameters
const encoded = encodeURIComponent('Hello World & Test=1');
// Result: Hello%20World%20%26%20Test%3D1
// Encode full URL
const encodedUrl = encodeURI('https://example.com/search?q=hello world');
// Result: https://example.com/search?q=hello%20world
// Decode
const decoded = decodeURIComponent(encoded);Key Features & Rules
- encodeURIComponent: Best for encoding individual URL parameters.
- encodeURI: Best for encoding full URLs while keeping separators like
: / ? # & =intact. - UTF-8: Industry standard for URL encoding. UTF-16 hex escape is also available for legacy needs.
- 100% Private: All processing is done locally in your browser. Your data is never uploaded.
- JSON to x-www-form-urlencoded: Convert JSON objects to URL-encoded form data.
FAQ About URL Encode Decode
What is URL encoding used for?
URL encoding is used to convert special characters into a format that can be safely transmitted over the internet. It ensures that URLs containing spaces, ampersands, non-ASCII characters, and other special characters are properly formatted and can be correctly interpreted by web browsers and servers.
How to encode a URL online?
To encode a URL online, simply paste the URL into the input field of our URL encode decode tool and click the "Encode" or "Encode Full URL" button. The tool will instantly generate the encoded URL, which you can then copy and use in your applications.
How to decode URL components in JavaScript?
To decode URL components in JavaScript, use the built-in decodeURIComponent() function. For example: const decoded = decodeURIComponent('Hello%20World%20%26%20Test%3D1');. This will convert encoded characters back to their original form.
How to convert JSON to x-www-form-urlencoded?
To convert JSON to x-www-form-urlencoded, you can use our URL encode decode tool. First, convert your JSON object to a string, then encode it using the tool. Alternatively, in JavaScript, you can use new URLSearchParams(obj).toString() to convert a JSON object to URL-encoded form data.
Is this URL encoder free for developers?
Yes, our URL encode decode tool is completely free for developers and all users. It has no ads, no login requirements, and no usage limits. You can use it as often as you need for your development projects.
Want to Master URL Encoding?
Explore our comprehensive guide on encoding rules (RFC 3986), common mistakes, and best practices for developers.
📖 Learn More About URL Encoding/Decoding & Best Practices