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URL Encoder & Decoder - Percent Encoding Tool

Encode and decode URLs for safe transmission over the internet. Convert special characters to percent-encoded format and vice versa.

URL Encoded

Decoded Text

What is URL Encoding?

URL encoding, also known as percent encoding, is the process of converting characters into a format that can be safely transmitted over the internet. Special characters, spaces, and non-ASCII characters are converted to percent-encoded format using their hexadecimal representation.

This encoding ensures that URLs remain valid and functional across different systems, browsers, and protocols, preventing issues with special characters that might otherwise break web requests.

Key Features

  • Bidirectional conversion: Encode plain text to URL format and decode back
  • Real-time processing: Instant encoding/decoding as you type
  • Error handling: Clear feedback for invalid encoded strings
  • Copy functionality: One-click copying of encoded/decoded results
  • API integration: Generate cURL commands for programmatic access
  • Permalink support: Share URLs with pre-filled encoded data

Common Use Cases

Query Parameters

Encode special characters in URL query parameters to ensure proper data transmission in web forms and API calls.

API Development

Safely encode user input for REST APIs, ensuring special characters don't break endpoint URLs or parameter values.

Data Processing

Decode URL-encoded data from web logs, analytics, or external APIs for analysis and processing.

Web Security

Properly encode user input to prevent URL manipulation attacks and ensure secure data transmission.

How to Use the URL Encoder

Step-by-Step Instructions

  1. Enter your text in the "Decoded Text" field to encode it
  2. Or paste URL-encoded text in the "URL Encoded" field to decode it
  3. The tool automatically processes the conversion in real-time
  4. Copy the result using the Copy button next to each output
  5. Use the API section to generate cURL commands for automation
  6. Any decoding errors will be clearly displayed with helpful messages

Pro Tips

  • Spaces are encoded as %20 in URL format
  • Special characters like &, =, ? have specific encoded forms
  • The tool handles international characters and Unicode properly
  • Use permalinks to share encoded/decoded examples with colleagues
  • Both encoding and decoding operations are reversible
  • The tool works entirely in your browser for data privacy

Why Use Our URL Encoder?

Our URL encoder provides instant, accurate encoding and decoding with comprehensive error handling and API integration. Unlike basic encoders, it offers bidirectional conversion, real-time processing, and developer-friendly features like cURL generation.

The tool is essential for web developers, API integrators, and anyone working with URLs containing special characters. It ensures your web applications handle user input safely and your API calls work reliably across different systems and environments.