Tech
URL Encoder Decoder
This URL encoder decoder tool helps you encode or decode URL components by using browser-safe encoding and decoding functions.
Quick answer
Encoding converts reserved characters into percent-encoded format.
What this tells you
- •Encoding converts reserved characters into percent-encoded format.
- •Decoding restores percent-encoded text to readable form.
- •Invalid decode input is detected and shown with a clear error message.
How to Use
- 1Paste text into the input field.
- 2Choose Encode URL or Decode URL.
- 3Copy the output result.
How It Works
Formula
Encode: encodeURIComponent(input)
Decode: decodeURIComponent(input)The tool uses browser-native URL component functions, so input stays client-side and conversion behavior follows standard URL encoding rules.
Calculation note: values are processed in the order shown above, using the current input units.
Worked Examples
Encode query text
Inputhello world?
Resulthello%20world%3F
Frequently Asked Questions
It converts reserved characters into percent-encoded values so they can be safely included in URL components.
The tool shows a clear invalid-input error instead of returning broken output.
No. Encoding and decoding run fully client-side in your browser.