URL Encoder
Encode URLs and query strings.
Loading URL Encoder...
⚙️ How It Works
Enter text or a URL, choose encode or decode mode, and the tool instantly converts it using standard JavaScript encoding functions.
❓ Frequently Asked Questions
What is URL encoding?
URL encoding (percent encoding) converts unsafe characters into a % followed by hexadecimal values so they can be safely used in URLs.
What is a URL decoder?
A URL decoder reverses percent encoding, converting encoded sequences like %20 back into readable characters.
What is the difference between encodeURI and encodeURIComponent?
encodeURI preserves URL structure characters, while encodeURIComponent encodes everything, making it ideal for query parameters.
When should I use encodeURIComponent?
Use encodeURIComponent when encoding query parameter values to prevent breaking the URL structure.
Why do spaces become %20 in URLs?
Spaces are not valid in URLs, so they are encoded as %20 to ensure proper transmission.
Can I decode malformed URLs?
If the encoding is invalid or incomplete, decoding may fail and return an error.
Is this tool safe to use?
Yes, all encoding and decoding happens locally in your browser with no data sent to servers.
Does this support full URLs and query strings?
Yes, you can encode or decode entire URLs or just individual query parameters.
What characters get encoded?
Special characters like spaces, symbols, and reserved URL characters are encoded into percent format.
Is this tool free?
Yes, it is completely free and works offline.
Does the URL Encoder work offline?
Yes, the URL Encoder is fully functional offline. Because this tool runs entirely in your browser, no data is ever uploaded to external servers. Once the page is loaded, you can seamlessly continue using it without an active internet connection. You can also install Knicknaks as a Progressive Web App (PWA) for native-like offline access.