What Is This Tool?
The URL Encoder & Decoder converts text into a URL-safe format and back again.
What Can You Do With It?
Encode query parameter values with spaces or symbols. Read encoded links such as %20 and %3D. Debug tracking links.
How Does It Work?
Uses the browser’s encodeURIComponent and decodeURIComponent functions, which replace special characters with % codes (UTF-8) and reverse them.
Key Benefits
Standard, reliable encoding. Supports any language characters.
Limitations and Important Notes
Encodes text as a URL component, so characters like / and ? are also encoded. Badly formed % sequences cannot be decoded.
Privacy and Security
This tool runs entirely in your web browser. Your input and results are processed on your device and are not uploaded to Usekit servers.
Real-World Example
Encode “hello world & more” → hello%20world%20%26%20more. Decoding it returns the original text.
Frequently Asked Questions
Why does a space become %20?
Spaces are not allowed in URLs, so they are encoded as %20.
Why do I get a decode error?
The text contains a % that is not followed by two valid hex digits.
Should I encode a whole URL?
Usually only encode the parameter values, not the full address.
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How to use this tool
- Paste text or an encoded string.
- Click Encode or Decode.
- Copy the result.