URL Encoder/Decoder

By the FastFreeTools Editorial Team · Last reviewed: May 2026 · See our Editorial Policy for methodology, sourcing, and disclaimers.

Encode or decode URLs with one click. Convert special characters for safe use in URLs, query parameters, and API requests.

About this tool

URL encoding converts special characters into a format that can be safely transmitted in web addresses. Characters like spaces, ampersands, question marks, and non-ASCII characters have special meanings in URLs and must be encoded (e.g., space becomes %20) to avoid breaking links and API requests. Our URL Encoder/Decoder handles both encoding and decoding instantly in your browser. Developers use this constantly when building API requests, debugging URL parameters, constructing query strings, and working with international characters in web addresses. The tool also helps non-technical users understand and fix broken links that contain encoded characters.

How to use URL Encoder/Decoder

Enter the text or URL you want to encode or decode.
Click 'Encode' to convert special characters to URL-safe format.
Use 'Switch Mode' to toggle between encoding and decoding.
Copy the result for use in your URLs or applications.

Tips & best practices

URL encoding converts spaces to %20 and other special characters to their encoded equivalents.
Always encode query parameters that contain special characters.
Decode URLs to read the original text that was encoded.
Some characters like / and : have special meaning in URLs and need encoding in values.

Common use cases

Encoding query parameters for API requests and URL building.
Decoding URLs to understand encoded characters in web addresses.
Preparing data for transmission in URL query strings.
Debugging URL-related issues by examining encoded values.

Privacy

This tool runs entirely in your browser. We do not upload, store, log, or process your input on any server. Open your browser's DevTools Network tab to verify — there is no outbound request with your data. See our Privacy Policy for details.

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