URL Encoder / Decoder
Encode or decode URLs and text using encodeURIComponent / decodeURIComponent. Perfect for preparing query parameters or decoding encoded URLs. Runs in your browser.
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About This Tool
How to Use
- 1Select "Encode" to convert text to URL-safe format, or "Decode" to convert encoded text back.
- 2Choose the encoding method: encodeURIComponent for query parameters or encodeURI for full URLs.
- 3Enter your text in the input field, or upload a .txt file.
- 4Click "Process" to perform the conversion.
- 5Download the result or copy it from the preview.
When to Use
- •When building query strings with special characters like spaces, ampersands, or Unicode.
- •When decoding URL parameters received from web applications or APIs.
- •When preparing text for inclusion in URL paths or fragments.
- •When debugging encoded URLs that are difficult to read.
Tips & Tricks
- ✨Use encodeURIComponent for encoding individual query parameter values.
- ✨Use encodeURI when encoding a complete URL and want to preserve the URL structure (://?#&=).
- ✨Spaces are encoded as %20 with both methods.
- ✨If decoding fails, check that all percent-encoded sequences are valid (e.g. %20, %3A).
Frequently Asked Questions
encodeURI encodes a full URI but preserves characters that are part of the URL structure (like :, /, ?, #, &, =). encodeURIComponent encodes everything except letters, digits, and a few symbols (- _ . ! ~ * ' ( )), making it ideal for encoding individual query parameter values.
Use URL encoding whenever you need to include special characters (spaces, &, =, ?, etc.) in a URL. This is essential for query strings, form data, and any text embedded in URLs to prevent misinterpretation by browsers and servers.
No. All encoding and decoding uses built-in browser JavaScript functions and happens entirely on your device.
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