Free Online URL Decoder

URL decoding takes a percent-encoded string and restores the original characters, handling UTF-8 multi-byte sequences and the form-body `+`-as-space variant.

Your data is processed entirely in your browser and never sent to any server.

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How to Use This Developer Tool

  1. Paste the encoded string into the input area.
  2. Toggle treat + as space if the source is a form body.
  3. Read the decoded text in the output panel.
  4. Click Copy to grab the result.

What Is an URL Decoder?

Server logs, OAuth callbacks, form submissions, and redirect URLs all carry data in percent-encoded form. To read what was actually sent — a search term, a redirect target, an error code — you have to decode it back.

The decoder runs input through `decodeURIComponent` and optionally converts `+` to space for `application/x-www-form-urlencoded` bodies, where the encoding differs from path-style URLs. Invalid percent sequences (a `%` not followed by two hex digits) are flagged inline so you know exactly where the input was malformed.

Frequently Asked Questions

What does URL decoding do?
It reverses URL encoding. %20 becomes a space, %3D becomes =, etc. Useful for reading encoded URLs or debugging query parameters.
What if the URL is malformed?
Invalid percent-sequences (e.g., %2G) may cause errors. Decoders typically leave invalid sequences as-is or show a warning.
Can I decode full URLs?
Yes, paste the entire URL. The decoder will decode all percent-encoded parts. Be careful—decoding can change URL meaning (e.g., %2F in path).

Published by the WeGotEveryTool team. We build and test every tool in-house and update pages when the underlying spec, formula, or recommendation changes.

Reviewed: May 2026. Disclaimer: this tool is provided as-is for general informational use. For decisions with material consequences (medical, legal, financial, security) verify results against a qualified professional source.

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