What is URL Encoder / Decoder?
URL Encoder / Decoder converts text to and from percent-encoded format used in URLs, and parses complete URLs into their component parts. Percent encoding (also called URL encoding) replaces unsafe characters with %XX hex sequences, ensuring that special characters, spaces, and international text can be safely included in URLs.
URLs are the foundation of web communication, but their encoding rules are nuanced. Spaces can be %20 or + depending on context. Different URL components (path vs. query vs. fragment) have different rules about which characters must be encoded. DevKit handles these distinctions correctly, letting you encode and decode with confidence.
How to Use URL Encoder / Decoder
For encoding, type or paste the text you want to include in a URL. Select whether you are encoding a full URL, a path segment, a query parameter value, or a fragment. The tool applies the correct encoding rules for each context.
For decoding, paste a percent-encoded URL or string. The tool converts all %XX sequences back to their original characters, handling UTF-8 multibyte sequences correctly.
The URL parser breaks a complete URL into its components: scheme, userinfo, host, port, path, query string (with individual parameters listed), and fragment. Each component is displayed separately and can be edited and reassembled.
Common Use Cases
- API development: Encode query parameters and path segments when constructing API URLs manually, ensuring special characters do not break the request.
- Redirect URL debugging: Decode deeply nested URL-encoded redirect chains to trace the actual destination URL through multiple hops.
- OAuth debugging: Parse and decode OAuth callback URLs to inspect authorization codes, state parameters, and error descriptions.
- Analytics parameter inspection: Decode UTM parameters and tracking URLs to verify campaign attribution and link metadata.
- Internationalization testing: Encode and decode URLs containing international characters to verify that your application handles Unicode URLs correctly.