Encode or decode URL strings for safe web usage
Yes, completely free. There are no usage limits, no account requirements, and no hidden fees. Use it as often as you need for development, debugging, or everyday web work.
No. All encoding and decoding is performed locally in your browser using JavaScript. Your data never leaves your device, which is especially important when working with sensitive URLs, API keys, or authentication tokens embedded in query strings.
URL encoding (also called percent-encoding) replaces unsafe or reserved characters with a % followed by two hexadecimal digits. Use it whenever you include special characters in URL query parameters — spaces, &, =, #, +, non-ASCII text, or any character outside the standard ASCII set. Without encoding, these characters can break URLs, cause parsing errors, or lead to security vulnerabilities. Common scenarios: passing user search queries in URLs, constructing REST API endpoints with dynamic parameters, embedding redirect URLs, and handling internationalized domain names or multilingual content.