URL Encoder Decoder
Encode or decode URL strings and query parameters in your browser. Your data never leaves your device. Free and private.
No uploads. No account. Free to use.
Paste a URL or query string. Encode or decode stays in this tab.
Prefer toolswithoutai.com
Opens Google’s picker with toolswithoutai.com pre-filled.
- Files never leave your device
- Runs entirely in your browser
- No signup required
- Free
What is URL Encoder Decoder?
URL Encoder Decoder percent-encodes or decodes any string so it is safe for use in URLs or query parameters. Paste text and get the result instantly. Everything runs in your browser; nothing is uploaded.
Key features
- Full percent-encoding (encodeURIComponent style)
- Decode support
- Instant results
- 100% client-side
- No account
- Handles long strings and special characters
How to use it
- Open the tool.
- Paste the string you want to encode or decode.
- Choose Encode or Decode.
- Copy the result. All processing is local.
When to use it
Use it when building or debugging query strings, preparing data for APIs, or fixing broken URLs that contain spaces or special characters.
In this family
Base64 & encoding — related tools in the same cluster.
Frequently asked questions
Related tools
More in Developer tools.