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URL Decoder

Decode percent-encoded URLs back to readable query strings

Free Client-Side No Login No Storage
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URL Encoder Percent-encode URLs and query strings for safe transmission Base64 Decoder Decode Base64 strings back to plain text or binary data HTML Entity Decoder Decode HTML entities back to their original characters

How to Use the URL Decoder

  1. Paste a percent-encoded URL into the input field.
  2. Click Decode to convert back to readable text.

URL decoding converts percent-encoded characters (like %20 for space, %3D for =) back to their original characters.

What is URL Decoding?

URL decoding reverses percent-encoding, converting %XX sequences back to their original characters. For example %20 becomes a space, %40 becomes @, %2F becomes /. This is essential when reading URL parameters that were encoded before transmission.

Common Uses

  • Decoding query parameters from server logs or analytics data
  • Debugging encoded redirects and OAuth callback URLs
  • Reading encoded data from browser URL bars
  • Inspecting encoded API request parameters

Frequently Asked Questions

Why do I see %20 in my URL?

%20 is the URL-encoded form of a space character. Spaces are not allowed in URLs so browsers and servers automatically encode them. You'll also see this in file download URLs that contain spaces in the filename.

What is the difference between decodeURI and decodeURIComponent in JavaScript?

decodeURI decodes a full URL but preserves structural characters like /, ?, &. decodeURIComponent decodes everything including those structural characters — use it for decoding individual parameter values, not entire URLs.

Is it safe to decode URLs in the browser?

Yes. CipherKit runs 100 % client-side — no data is sent to any server. It is safe to decode any URL here, including those containing sensitive query parameters.