URL Encoder/Decoder
Professional URL encoder decoder with percent encoding. Encode and decode URLs instantly for safe web transmission.
URL Encoder & Decoder
Encode and decode URLs with percent encoding. Perfect for handling special characters in URLs, query parameters, and API endpoints.
đĨ Input
đ¤ Output
Features & Benefits
Secure Processing
All encoding and decoding happens locally in your browser - no data is sent to servers.
Instant Results
Real-time processing with immediate feedback and error handling.
Flexible Encoding
Choose between URI component encoding or full URI encoding based on your needs.
Easy Copy
One-click copying of input and output with clipboard integration.
Error Handling
Comprehensive error detection with clear feedback messages.
Dark Mode
Full dark mode support for comfortable usage in any lighting condition.
Common Use Cases
đ API Development
Encode query parameters and URL components for REST API endpoints and webhooks.
đ Form Processing
Handle form data with special characters that need to be safely transmitted via URLs.
đ Search Parameters
Encode search queries and filter parameters for web applications and search engines.
đ Debugging
Decode URL-encoded strings from logs, network requests, and debug information.
What is URL Encoding?
URL encoding, also known as percent encoding, is a method of encoding special characters in URLs to ensure they are safely transmitted over the internet. When a URL contains characters that have special meaning or are not allowed in URLs, they must be encoded using a percent sign (%) followed by their hexadecimal ASCII value.
For example, a space character becomes %20, an ampersand (&) becomes %26, and a question mark (?) becomes %3F. This encoding ensures that URLs are properly interpreted by web servers and browsers.
When to Use URL Encoding
URI Component Encoding
Use encodeURIComponent() for encoding query parameters, form data, and individual URL components. This method encodes all special characters except unreserved characters (A-Z, a-z, 0-9, -, _, ., ~).
Full URI Encoding
Use encodeURI() for encoding complete URLs while preserving the URL structure. This method does not encode characters that have special meaning in URLs like :, /, ?, #, [, ], @.
Common Characters That Need Encoding
Best Practices
- âAlways encode user input before including it in URLs
- âUse encodeURIComponent() for query parameters and form data
- âDecode URLs when processing server-side requests
- âHandle both + and %20 when decoding spaces for maximum compatibility
- âDon't double-encode URLs as it can cause parsing errors
- âAvoid using encodeURI() for query parameters