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About This Tool
URL Encoder/Decoder converts special characters in URLs to their percent-encoded equivalents (e.g., space becomes %20) and decodes them back to readable form. Properly encoded URLs are required for query strings, API calls, and link sharing.
Unencoded special characters in a URL can break links, cause 400 errors, or silently truncate query parameters. Decoding an incoming URL is equally important when debugging what a browser or API client actually sent.
Tip: Encode only the parameter values, not the entire URL — encoding the slashes and domain will break the URL structure. If you are unsure, encode just the query string portion.