URL Encoder & Decoder
Encode and decode URLs or URL components using standard percent-encoding — instantly in your browser. Choose between encodeURIComponent for query parameters and encodeURI for complete URLs. Free, private, and no account required.
How to Use the URL Encoder & Decoder
- 1
Choose your mode
Select "Component" (encodeURIComponent) for encoding individual query parameter values, or "Full URL" (encodeURI) for encoding an entire URL while preserving structural characters.
- 2
Enter or paste your input
Type or paste the text or URL you want to encode or decode.
- 3
Encode or decode
Click Encode or Decode — the result appears instantly.
- 4
Copy the result
Click the Copy button to copy the output to your clipboard.
Key Features
Two Encoding Modes
Both encodeURIComponent (for query values) and encodeURI (for full URLs) in a single tool.
Instant Results
All encoding and decoding runs locally using the browser's native JavaScript functions.
Private
Your URLs and query parameters never leave your browser — no server round-trips.
Pro Tips
Always use encodeURIComponent for user-supplied values you embed in query strings — it encodes ?, &, =, and # which would otherwise break the URL structure.
encodeURI is designed for encoding a complete URL that is already structurally valid — it deliberately leaves /, ?, #, and & untouched.
Spaces become %20 with encodeURIComponent, or + in form submissions (application/x-www-form-urlencoded) — these are different encodings for the same character.
Privacy Note
All processing in this tool runs entirely in your browser — no data is transmitted to any server. Your input is never logged, stored, or shared. This tool is free to use with no account or registration required.
Frequently Asked Questions
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Your input is processed locally in your browser and is never stored, transmitted, or shared with any server. See our Privacy Policy.