URL encoder/decoder · Guide
Encoding Query String Parameters
Query parameters are where encoding matters most. A small mistake here breaks links silently.
Encode each value
Encode parameter values individually, not the whole query string. That way separators between parameters stay intact while special characters inside values are escaped.
Avoid double-encoding
Encoding an already-encoded value turns %20 into %2520. If decoded output still shows percent sequences, the value was encoded twice — decode once to recover it.
Frequently asked questions
Can I use this for production work?
Yes, for inspection, formatting and quick generation. Still review the output before committing it to production code or configuration.
Ready to try it?
Open the free browser-based URL encoder/decoder and apply what you just read — no sign-up, runs locally.
Open the URL encoder/decoder tool