URL Encoder & Decoder
Percent-encode text for safe use in URLs, or decode encoded URLs back to text.
Encode text so it is safe to include in a URL, or decode a percent-encoded URL back to readable text. Uses component encoding by default.
Output
—
Formula & methodology
Uses the standard encodeURIComponent / decodeURIComponent semantics.
Worked example
- a b&c → a%20b%26c
Frequently asked questions
What characters get encoded?
Reserved and non-ASCII characters are percent-encoded (e.g. a space becomes %20).
Privacy
All processing happens locally in your browser. Your data is never uploaded.