URL Encoder & Decoder

URLs may only contain a limited set of ASCII characters. Spaces, accented letters, emoji and symbols such as & or # must be percent-encoded, otherwise links break or parameters are misread. This tool encodes and decodes text using the same rules as browsers and shows each part of a URL, including every query parameter.

Common uses

• Build tracking links with UTM parameters that contain spaces or special characters.
• Decode long redirect or affiliate URLs to see where they really go.
• Debug API requests with encoded query strings.
• Encode non-English search terms and file names for links.

Tips for best results

• Encode each query value separately rather than the whole URL.
• Decode suspicious links before clicking to check the real destination.
• Remember that # starts a fragment – encode it as %23 inside values.
• Use the parts table to spot duplicated or missing parameters.

Percent-encoding explained

Each unsafe byte is written as % followed by two hexadecimal digits. Text is first converted to UTF-8, so “café” becomes caf%C3%A9 and “東京” becomes %E6%9D%B1%E4%BA%AC. Letters, digits and - _ . ~ are never encoded. Reserved characters such as : / ? # [ ] @ ! $ & ' ( ) * + , ; = have special meaning and must be encoded when used as data.

Internationalised links

Modern browsers display Unicode in the address bar, but the underlying request always uses percent-encoded paths and Punycode for domain names. When you share links in emails, documents or QR codes, the encoded form is the most reliable and works with every app and device.