URL encoding and decoding
Encode or restore special characters in URL components in percent format.
Input
The example value has been entered. Check it immediately or change the value.
Input is processed in the browser. Refreshing returns a sample value.
Result
Check or change the value using the example value result.
Based on components, not URLs. The plus sign is not replaced with a space.
Share result
Share the tool link and result text together. No URL is included in the result. Check the below content and then share it.
Calculation·conversion criteria
Performs percent encoding on individual URL values.
Input example
One space → %20
Encoding A&B as components becomes A%26B. Used when passing & as part of a value instead of as a separator.
How to use
- Use the entered example value or change the input or direction items.
- Click Verify result and check the following result.
- Result can be copied if needed.
Frequently Asked Questions
Why does the plus sign not become a space?
This tool uses decodeURIComponent rules to keep the + unchanged. To interpret + in form query as a space, use the query string analyzer. It is not intended for encoding the entire URL at once.
Calculation criteria and reference materials
- WHATWG — URL Standard
Standard for URL components and form query string processing
Verification of calculation criteria: · Calculation·verification principles · Report errors