DecoderURL
Convert percent-encoded URL strings back into readable plain text with this instant online URL decoder. Encoded URLs are common in browser address bars, API logs, HTTP request records, and encoded query parameters — making them difficult to read in their raw form. This tool decodes %20 back to spaces, %26 back to ampersands, and all other encoded sequences back to their original characters, making the content immediately understandable.
Use URL Tool in Seconds
URL Decoder
Interactive developer tools engine
How To Use URL Decoder
- Paste the percent-encoded URL string you want to decode into the input field.
- The tool scans the input for percent-encoded sequences (% followed by two hex digits).
- Each encoded sequence is converted back to its original character.
- The decoded, human-readable output is displayed immediately.
- Copy the decoded result for use in debugging, documentation, or further analysis.
Frequently Asked Questions
Does this decode percent-encoded URL characters?
Yes. The decoder converts every percent-encoded sequence back to its original character. For example, %20 becomes a space, %40 becomes @, %2F becomes /, and multi-byte UTF-8 sequences like %E2%80%99 become the corresponding Unicode character (in this case, a right single quotation mark). The result is the original human-readable text before encoding was applied.
When do I encounter percent-encoded URLs?
Percent-encoded URLs appear in browser address bars when you visit pages with special characters in the URL, in HTTP request and access logs on web servers, in API response data when URLs are included as values, in email marketing platforms that encode tracking parameters, and in any system that transmits URLs through channels that require encoding for safety.
Can this decode query string parameters?
Yes. Query strings like ?name=John%20Doe&city=New%20York&tag=caf%C3%A9 can be pasted into the decoder to reveal the plain text values: name=John Doe&city=New York&tag=café. This is very useful when inspecting API requests, debugging form submissions, and analyzing tracking URLs from marketing campaigns.
What is the difference between URL decoding and HTML entity decoding?
URL decoding converts percent-encoded sequences (%20, %26) back to characters. HTML entity decoding converts HTML entities (&, <, ) back to characters. Both serve a similar purpose in different contexts — URL encoding is for web addresses and HTTP, while HTML entities are for safe rendering of special characters in HTML markup. Use the HTML Decoder tool on this site for HTML entity decoding.
Is URL decoding reversible?
Yes. URL encoding and decoding are perfectly reversible. Encoding a string always produces the same encoded result, and decoding always recovers the original string. This deterministic behavior is what makes URL encoding reliable for data transmission — you can confidently encode a value, transmit it, and decode it on the receiving end to get exactly the original content back.
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