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URL Encoder and Decoder

Encode query parameters safely and decode percent-encoded URLs back into readable text without leaving the page.

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URL Encoder
Processed entirely in your browser. No uploads, no background requests, and no account needed.
Ctrl+Enter Encode Ctrl+Shift+Enter Decode Ctrl+Shift+C Copy
Text or encoded URL value Editable input
1 line | 0 chars | 0.0 KB
Encoded or decoded result Read only output
1 line | 0 chars | 0.0 KB
Ready Choose encode or decode.
The conversion happens locally in your browser.
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URL Encoder

URLs are simple to read when they are clean, but they become fragile the moment user input, redirect targets, or nested query parameters get involved. Spaces, ampersands, equals signs, slashes, and many other characters can change the meaning of a URL if they are not encoded correctly. A URL encoder prevents that by converting unsafe characters into percent-encoded sequences that browsers and servers can interpret reliably.

This becomes especially useful when you are building redirect links, testing API query strings, generating OAuth callback parameters, or debugging log output that contains encoded values. Instead of manually guessing what %20, %2F, or %3D mean, you can decode the string instantly and inspect the real content. The reverse is just as important when you need to prepare text for transport without accidentally breaking the surrounding URL structure.

The tool runs with the browser's own encoding and decoding primitives, so it stays lightweight and predictable. Because everything happens client-side, you can safely inspect internal callback values and temporary parameters without relying on a remote service. That makes it a practical fit for quick API work, frontend debugging, and general day-to-day developer housekeeping.

How to Use the URL Encoder

  1. Paste plain text, a parameter value, or a full encoded string into the input editor.
  2. Click Encode to percent-encode special characters for safe URL transport.
  3. Click Decode to inspect encoded redirects, callback values, or query strings.
  4. Use Swap if you want to continue editing the transformed output.
  5. Copy or download the result once it matches the format you need.

URL Encoder Examples

Before 
returnUrl=https://example.com/account?tab=billing & name=Jane Doe
After 
returnUrl%3Dhttps%3A%2F%2Fexample.com%2Faccount%3Ftab%3Dbilling%20%26%20name%3DJane%20Doe

Frequently Asked Questions

  • What does a URL encoder do?

    A URL encoder converts reserved and unsafe characters into percent-encoded sequences so the text can be used safely inside query strings, paths, and redirects.

  • Why do spaces and symbols change in encoded URLs?

    Characters such as spaces, ampersands, equals signs, and question marks have special meaning in URLs. Encoding prevents them from being misinterpreted.

  • Is this safe for API parameters?

    Yes. This tool uses browser-native URL encoding and decoding behavior, which is suitable for everyday parameter preparation and inspection.

  • Does the tool store encoded URLs?

    No. The conversion happens locally in your browser and does not require an upload.

  • When should I decode a URL string?

    Decode when you need to inspect redirected values, API parameters, callback URLs, or logs that contain percent-encoded text.

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