URL Encoder / Decoder
Percent-encode and decode URLs and query string parameters.
Input String
Enter the URL or text
Result
The transformed output string
About URL Encoder / Decoder
The URL Encoder / Decoder translates text into a valid, percent-encoded format suitable for transmission over HTTP. It safely handles special characters, emojis, and reserved symbols so they don't break your query parameters or routing.
How to Use
Real-World Examples
Encoding Query Parameters
Encode a complex query string containing spaces and special characters before appending it to a URL.
Search query: "Hello & World!"
Search%20query%3A%20%22Hello%20%26%20World!%22
Best Practices
- Always URL-encode user input before injecting it into HTTP GET requests to prevent broken links and injection attacks.
- Do not encode an entire URL (including `http://`), only encode the individual query parameter values.
Pro Tips
If you need to parse an entire URL into its protocol, host, and path components, use the related URL Parser tool.
Frequently Asked Questions
What is the difference between encodeURI and encodeURIComponent?
`encodeURI` ignores reserved characters like `?` and `&` so an entire URL remains valid. `encodeURIComponent` aggressively encodes everything, which is necessary for the actual values in a query string.
Is my data secure?
Absolutely. All processing is done locally in your browser. Your data is never sent to our servers.
Security & Privacy
Percent-encoding is executed client-side via JavaScript's `encodeURIComponent()` API. Your URLs and query parameters remain private to your local machine.