URL encoding (percent-encoding) converts special characters in URLs into a format that can be safely transmitted over the internet, replacing characters like spaces, ampersands, and other reserved characters with percent-encoded equivalents. This URL encoder and decoder tool instantly converts text into its URL-encoded form, or decodes URL-encoded text back into readable characters. It's essential for web developers building query strings, debugging API requests, or troubleshooting URLs that contain special characters like spaces (%20), ampersands (%26), or non-ASCII characters. Simply paste your text or encoded URL to see the conversion instantly.