URL decoder

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About the URL Decoder

The URL Decoder reverses percent-encoding so you can read encoded query strings, paths and form submissions.

How to use it

Paste the encoded URL.
The decoded version appears in the output panel.

Common uses

Inspecting referrer parameters.
Cleaning URLs before logging them.
Reading copy-pasted links that became unreadable.

What is URL Decoding?

A URL decoder restores percent-encoded strings to their original, human-readable form. Web addresses frequently hide their real content behind percent signs and pairs of hexadecimal digits, so %20 actually represents a space, %2F represents a forward slash, and %C3%A9 represents the letter é. Decoding translates these escape sequences back into the readable characters they stand for, turning a long, cryptic link into something you can actually understand at a glance. This is the inverse operation of the URL encoded format described on the related encoder page, and it is essential whenever you meet an encoded address in a log file, an analytics dashboard, an email, or a redirect. A single decoded string can expose the parameter names and values that a request really carried. Understanding this format matters because most automation tools, link builders, and analytics platforms emit encoded addresses by default.

How to Use

Paste the encoded string you want to read into the input box and press the Decode button. The readable text appears instantly in the output area, ready to copy or edit. Ordinary letters and numbers pass through untouched, and only valid percent-encoded sequences are converted, so the tool is safe for any mixed string you throw at it. If a sequence is not a valid encoding, it is left alone rather than corrupted, which keeps the output faithful to your source. Processing is instant and free, and you can decode as many strings as you need without signing up or sharing the addresses with a server. The result is reliable whether you are decoding a single tracking link or a batch of logged requests from an application.

Common Use Cases

Support and QA teams use decoding to read the real query parameters inside URLs recorded in error logs and browser histories, quickly uncovering what data a request actually carried. Marketers decode campaign links to recover the UTM parameters that a link shortener may have percent-encoded, and developers use it to inspect the raw input received by their forms and APIs. Everyone who works with tracked or generated links can rely on decoding to see the plain meaning behind an encoded address and to verify that data survived transmission intact, which is especially useful when a partner tool mangles a query string and you need to confirm the original values. These checks are a routine part of keeping links and integrations healthy every day.

Frequently asked questions

Will decoding change the letters and numbers I paste?

No. Decoding only converts valid percent-encoded sequences, such as %20 for a space or %2F for a slash. Plain letters, digits, and punctuation that carry no percent sign pass through exactly as you entered them, so mixed strings are preserved reliably.

Can I decode query strings and UTM parameters with this tool?

Yes. Query strings and tracking parameters are frequently percent-encoded when a link is generated. Pasting such a link reveals the readable parameter names and values, which is ideal for auditing campaign URLs, debugging redirects, and understanding what a form or application has sent.

What happens if I paste something that is not a valid encoded string?

If the input contains no valid percent-encoded sequences, the tool returns it unchanged. A percent sign not followed by two valid hexadecimal digits is treated as an ordinary character, so nothing is corrupted or guessed. You can safely paste any string and inspect the result.

Does decoding reveal where an encoded link is going?

Decoding reveals the readable text behind an encoded address, but it does not follow or open the link. It is a reading tool, not a browser, so the decoded content shows you what the address contains without navigating to it or running it.