URL Encoder / Decoder
Encode or decode URLs and query parameters
About URL Encoder / Decoder
Encode special characters for safe URLs or decode percent-encoded strings back to readable text. Essential for web developers and API work.
- Percent-encodes special characters for safe URLs
- Decodes %XX sequences back to readable text
- Supports both encodeURI and encodeURIComponent modes
- Handles full URLs and individual query parameters
- Detects and preserves already-encoded sequences
Everything runs in your browser — your data never leaves your device.
How to Use URL Encoder / Decoder
- Paste your URL or text in the input
- Click Encode to percent-encode or Decode to convert back
- Copy the result with one click
Frequently Asked Questions
What is URL encoding (percent-encoding)?
URL encoding replaces unsafe characters with a % followed by their hex code (e.g., space becomes %20). This ensures special characters like &, =, and # don't break URL structure.
When should I URL encode text?
Encode text when building query strings, passing user input in URLs, working with API parameters, or embedding special characters in links. Browsers handle some encoding automatically, but APIs often require explicit encoding.
What is the difference between encodeURI and encodeURIComponent?
encodeURI encodes a full URL but preserves characters like /, ?, and #. encodeURIComponent encodes everything except letters, digits, and - _ . ~, making it safer for individual parameter values.
Is my data safe when using this tool?
Yes. All encoding and decoding happens in your browser. No data is transmitted to any server.
