Encode and decode
text = Hello, world!mode = encode
Result: Enter text and select Encode to see the URL output.
URL Encoder
Encode text for safe use in URLs (percent-encoding). Special characters are replaced with %XX sequences (e.g. space → %20, ? → %3F). Essential for query parameters, form data, and any text that appears in a URL. URL is an encoding, not encryption - it provides no confidentiality. Anyone can decode it trivially. Use it for data transport or format compatibility, never for secrets. Everything runs in your browser.
Privacy: this tool processes your data entirely in your browser. Nothing you paste or type is sent to the server.
Enter your values and press Calculate — the result appears here.
Worked examples
Frequently asked questions
Is URL the same as encryption?
No. URL is an encoding - a reversible transformation that anyone can undo. Encryption requires a key to reverse. Never use encoding to protect sensitive data.
Why does my decoded output look wrong?
Common causes: (1) the input was encoded with a different character set, (2) the input has extra whitespace or line breaks, (3) the input is corrupted. Try trimming whitespace and verifying the source.
Is my data sent to a server?
No. Encoding and decoding happen entirely in your browser. Nothing is transmitted anywhere.
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