About URL Encoder & Decoder
Encode URI components safely for web requests and decode percent-encoded strings (%20, %2F, %3F) into clean human-readable text.
Key Capabilities & Features
- Full URL encode vs URI Component encode
- Decodes plus signs (+) as spaces option
- Instant 1-click copy
- Handles complex multi-byte characters
How to Use URL Encoder & Decoder
1
Choose Action
Select Encode or Decode.
2
Paste String
Paste the query parameter or URL to convert.
3
Copy Result
Grab the converted URL string.
Privacy & In-Browser Execution Guarantee
Executed 100% inside your browser.
Frequently Asked Questions
What is the difference between encodeURI and encodeURIComponent?
encodeURI preserves protocol markers like 'https://' and '/', whereas encodeURIComponent encodes all special characters, making it ideal for query string parameters.
Why do spaces become %20 instead of +?
%20 is the official RFC 3986 percent-encoding standard for URLs, whereas '+' is traditionally used only in HTML application/x-www-form-urlencoded forms.
What causes URI malformed decode errors?
A malformed error occurs when an isolated '%' character is not followed by two valid hexadecimal digits, violating percent-encoding syntax.