URL Encoder and Decoder

Why use URL Encoder and Decoder?

URL Encoder and Decoder is a quick, no-nonsense developer utility that runs entirely client-side, so your code and data never leave your machine.

• Runs instantly in your browser — nothing to install, nothing uploaded.
• Completely free, with no account, no watermarks and no usage limits.
• Handles encodeURIComponent — encodes &, =, ?, / (use for query values); encodeURI — keeps structural characters :/?#[]@.
• Choose a mode: encode/decode a component, or encode/decode a full URL.
• Works on any device — desktop, tablet and phone — and is fully keyboard accessible.

How to use URL Encoder and Decoder

1. Choose a mode: encode/decode a component, or encode/decode a full URL.
2. Type or paste your text; the hint explains which JavaScript API each mode uses.
3. Encode or decode; swap input and output, copy, or download the result.
4. Malformed percent-encoding is reported with a clear, friendly message.

Examples

• Encoding 'hello world & coffee' as a query value → 'hello%20world%20%26%20coffee'.
• Decoding a percent-encoded path back to readable text.

Supported formats

• encodeURIComponent — encodes &, =, ?, / (use for query values)
• encodeURI — keeps structural characters :/?#[]@

Limitations

• Component encoding and full-URL encoding differ; using the wrong one can produce broken links.
• Decoding invalid percent sequences will report an error rather than guess.