Free URL Encoder & Decoder Online
Encode text for use inside URL components or decode percent-encoded text. The tool works locally in your browser and shows errors for invalid encoded input.
Use this for a URL component, not to encrypt data.
Private: your files are processed in your browser and are never uploaded to our server.
How to use
- Paste the text or encoded URL component.
- Choose Encode or Decode.
- Copy the result or download it as a text file.
Encode and decode URL components
URL component encoding is intended for individual values such as query parameter values, not blindly encoding an entire URL with its separators. This tool uses the browser’s encodeURIComponent and decodeURIComponent functions.
Do not treat URL encoding as encryption; encoded content is not secret. Processing happens locally.
Frequently asked questions
Is URL encoding encryption?
No. It converts characters to a URL-safe representation and does not protect confidential information.
Should I encode an entire URL?
Usually no. Encode individual components or parameter values so URL separators such as ? and & remain meaningful.
Why does decoding fail?
The input may contain incomplete or invalid percent-encoded sequences. Correct the sequence and try again.