URL Encoder & Decoder
Convert special characters in strings to URL-friendly query parameters and vice-versa.
About URL Encoder & Decoder Free — Percent-Encode Query Strings
Safely construct web query parameters, API endpoints, and webhooks by converting spaces, slashes, and symbols into RFC-compliant percent-encoded strings.
Key Features & Capabilities
- Encode full URLs or individual query parameter components
- Decode percent-encoded (%20, %2F, %3F) strings into plain text
- Supports complete UTF-8 international characters
- Real-time instant encoding as you type
- 100% private in-browser conversion
How to Encode or Decode URLs
Step 1: Paste URL or Query
Enter the web address or parameter string.
Step 2: Choose Encode or Decode
Select standard URL encode or decode mode.
Step 3: Copy Safe URL
Copy your percent-encoded URL ready for web requests.
Frequently Asked Questions
What is the difference between encodeURI and encodeURIComponent?
encodeURI preserves protocol and domain slashes (: // ? &), while encodeURIComponent encodes every special character for safe query parameters.
Is my browsing history or URL tracked?
No, all conversion executes locally on your machine.
Related Utility Tools
Why Zaeyon?
Private, free, and browser-based — no account, no uploads, no compromises.
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Your files never leave your device. All processing happens locally in your browser memory — nothing is sent to any server.
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No subscriptions, no hidden fees, no daily limits. Every tool on Zaeyon is permanently free to use without an account.
Instant & Powerful
Powered by WebAssembly — the same low-level technology used in native apps — so processing is fast even for large files.
Works Offline
Once the page loads, the WebAssembly engine runs entirely on your device. No internet connection needed to process files.
Works Everywhere
No software installation required. Runs directly in your browser on Windows, Mac, Linux, iOS, and Android.