URL Encoder & Decoder
Percent-encode or decode any text for safe use in URLs — instant and free.
The URL Encoder & Decoder converts special characters into percent-encoded form so text can travel safely inside URLs, query strings and form data — and decodes them back when you need the original. It uses the browser's standard encodeURIComponent and decodeURIComponent functions, with safe error handling that explains malformed input instead of crashing. Perfect for debugging links, APIs and redirects.
How to use the URL Encoder & Decoder
- Type or paste your text or URL into the box at the top.
- Click Encode to percent-encode special characters, or Decode to turn % sequences back into readable text.
- Use Copy Result to copy the output, or Clear to start over.
URL Encoder & Decoder — FAQs
Is this URL encoder free?
Yes, it is free with no signup and no limits. Encode or decode URLs, query strings and form values as often as you need, directly in your browser — a handy companion for everyday web development tasks.
Is my input uploaded anywhere?
No. The tool uses your browser's built-in encodeURIComponent and decodeURIComponent functions, so your text is processed locally on your device and never leaves it. Nothing is uploaded to a server, logged or stored anywhere at all.
Why do I get an invalid input error when decoding?
A lone % sign or a % not followed by two hexadecimal digits is not valid percent-encoding. The tool catches this safely and tells you what to fix instead of throwing a raw browser error.
When should I URL-encode text?
Encode text before putting it in a URL query string, form field or redirect parameter — spaces, ampersands, question marks and non-ASCII characters would otherwise break the link or change its meaning. Encoding keeps every character safe during transport.