Encode, decode, and parse URLs online — fast, free, and private.
No ads, no signup, no watermark. Everything runs locally in your browser. Your data never leaves your device.
Batch line-by-line encoding and decoding — process multiple strings at once.
Fully parse all URL components and display them visually in a structured breakdown.
Interactively edit URL query parameters and rebuild the URL in real time.
URL encoding, also known as percent-encoding, is a mechanism for encoding information in a URI. Special characters are replaced with a percent sign (%) followed by two hexadecimal digits representing the character's ASCII value. For example, a space becomes %20 and an ampersand (&) becomes %26. This ensures URLs are transmitted correctly over the Internet.
encodeURI encodes a complete URI but preserves URL structure characters like ://?#[]@!$&'()*+,;=. It is used when you want to encode a full URL while keeping it valid. encodeURIComponent encodes all special characters including URL structure characters, making it suitable for encoding individual query parameter values or path segments.
URL encoding is needed when passing special characters in URL query parameters, form data, API requests, or any context where characters like spaces, ampersands, equals signs, or non-ASCII characters (such as Chinese, Japanese, or emoji) appear in a URL. Without encoding, these characters may break the URL or be misinterpreted.
Yes! This tool supports batch mode. Simply enable the "Batch Mode" toggle and enter one string per line. Each line will be encoded or decoded independently, making it easy to process multiple values at once without repeating the operation.
Yes, this tool is completely free with no usage limits. All processing happens entirely in your browser using JavaScript — no data is ever sent to any server. Your URLs and data remain 100% private and secure on your device.
Absolutely! This URL encoder/decoder is 100% free with no ads, no signup, no login, and no usage limits. It runs entirely in your browser — no data is sent to any server, no account is needed, and there are no hidden costs. Use it as much as you want, anytime.