Online URL Encoder & Decoder

Paste a string to URL-encode it (percent-encoding) for safe use in URLs, or paste an encoded URL/string to decode it back to its human-readable form.

How to Use the URL Encoder/Decoder

URL encoding, also known as percent-encoding, is a mechanism for encoding information in a Uniform Resource Identifier (URI) under certain circumstances. It's essential because URLs can only contain a limited set of characters (ASCII printable characters). Any character outside this set, or characters that have special meaning in URLs (like spaces, `&`, `?`, `#`), must be encoded. This tool allows you to easily perform this encoding or decode an already percent-encoded string back to its original form. This is particularly useful for web developers, SEO specialists, or anyone working with web addresses and query parameters.

1

Input Your String/URL

Paste or type the string or URL component you wish to encode, or the percent-encoded string you want to decode, into the "Input" text area.

2

Encode or Decode

Click the "URL Encode" button to convert your input into a percent-encoded string. Click "URL Decode" to convert an encoded string back to its original representation. The result appears in the "Output" area.

Why is URL Encoding/Decoding Necessary?

URLs are designed to be simple and universally interpretable. Special characters or non-ASCII characters can break a URL or be misinterpreted by web servers and browsers. For example, a space in a URL parameter must be encoded (often as `%20` or `+`). URL encoding ensures that data passed in URLs is transmitted correctly and safely. Decoding reverses this process, making the data human-readable again. Our tool uses standard JavaScript functions (`encodeURIComponent()` and `decodeURIComponent()`) which are designed for encoding URI components, ensuring compatibility and correctness for most use cases. This is essential for constructing dynamic URLs, handling form submissions, or working with web APIs.

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Developer Feedback

"This URL encoder is super handy for quickly encoding parameters for API calls. Simple, clean, and does the job perfectly."

- API_Dev_Guru

"I often need to decode URLs from logs or analytics. This tool makes it quick and easy. No more manual replacements!"

- DataDetective