DevScratchpad

URL Encoder & Decoder

Raw URL / Text Input
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URL Encoder & Decoder (Offline & Secure)

Free online URL encoder and decoder — encode special characters or decode URL parameters and query strings instantly. No data leaves your browser.

How to use URL Encoder

  1. Type or paste your URL or query string into the left Input panel.
  2. Select 'Encode' or 'Decode' mode using the toggle.
  3. The result appears instantly in the right Output panel.

Edge Cases & Important Considerations

  • Invalid URL-encoded sequences (e.g. '%ZZ') will trigger a decoding error.

Keyboard Shortcuts

  • Ctrl/Cmd + K — Open Command Palette to switch tools instantly.

Frequently Asked Questions

Is this URL Encoder safe for sensitive corporate data?

Yes, 100%. All processing runs client-side in your local browser memory. No text, tokens, payloads, or logs are ever transmitted to any remote server or analytics engine.

Can I use this tool offline?

Yes. Because this tool runs strictly on client-side JavaScript with zero external API dependencies, once loaded it functions completely offline.

100% Client-Side Privacy Guarantee

All inputs are processed entirely inside your browser's memory using JavaScript. No data is ever transmitted to any server. Your tokens, JSON payloads, cURL commands, and timestamps never leave your machine.