🔗 Client-Side URL Encoder
Secure, private, and instant. No database, no tracking.
About URL Encoder/Decoder
Our Online URL Encoder and Decoder converts unescaped characters, spaces, and non-ASCII symbols into RFC 3986-compliant percent-encoded strings (e.g., spaces to %20, ampersands to %26). Also decodes obfuscated query strings back into plain text instantly.
Essential for developers debugging REST APIs, building custom OAuth redirect parameters, and testing webhook payloads securely in the browser.
💡 How to Use the URL Encoder/Decoder
- Input URL or Text: Paste raw text or an encoded query string into the input box.
- Select Action: Click Encode URL to apply percent-encoding or Decode URL to restore plain text.
- Copy Output: Copy the sanitized URL string for your API request or web application.
⚡ Key Features & Capabilities
✨ RFC 3986 Compliant
Follows standard W3C and IETF percent-encoding specifications.
✨ Bi-Directional Conversion
Instant switching between Encode and Decode modes.
✨ 100% Client-Side Privacy
No sensitive OAuth tokens or API keys are ever transmitted over the network.
🎯 Common Use Cases
- API Developers: Safely encode JSON payloads and query parameters in HTTP GET requests.
- OAuth Implementations: Encode redirect_uri and callback parameters correctly.
- Security Researchers: Inspect and decode obfuscated URL parameters during vulnerability testing.
Frequently Asked Questions
What is Percent-Encoding?
Percent-encoding is a mechanism for encoding arbitrary data in a Uniform Resource Identifier (URI) using ASCII characters, replacing non-ASCII bytes with a '%' followed by two hexadecimal digits.
What is the difference between encodeURI and encodeURIComponent?
encodeURI preserves protocol delimiters (: / ? # & =), while encodeURIComponent encodes all characters including delimiters, making it suitable for single query parameter values.