Choose the exact component
Encode a parameter value or path segment rather than blindly transforming an entire URL. Separators such as colon, slash, question mark, ampersand, and equals have structural meaning.
Percent-encode and decode URLs locally
Percent-encode a URL component or decode an encoded value without uploading it. Use this tool for query values, paths, callback parameters, and sanitized HTTP examples.
Encode or decode a URL component
Transform one query value or path segment without uploading it.
How to use percent-encode and decode urls locally accurately
This url tool keeps input local, but its result still needs the human review described in the steps below before it is shared or used.
Encode or decode once
Encoding replaces characters that are unsafe in a component with percent escapes. Decoding reverses one layer and reports malformed escape sequences instead of guessing.
Review the readable result
Decoded URLs can expose signed parameters, tokens, email addresses, internal hosts, redirect targets, or personal data. Redact those values before sharing a transcript.
What this url tool does not do
Percent-encoding is a transport representation, not encryption, validation, authentication, or protection against open redirects and injection. A receiving application must still parse and validate each value in context.
Before sharing the url result, read HTTP transcript sharing guide for the matching context and privacy checks.
Percent-encode and decode URLs locally questions
Privacy, limits, and correct interpretation.
Does the URL tool upload input?+
No. Encoding and decoding use built-in browser functions on this device.
Should I encode a complete URL?+
Usually not. Encode the individual query value or path segment so structural separators keep their meaning.
Does percent-encoding hide a secret?+
No. Anyone can decode it, and servers, proxies, analytics, and browser history may record the URL.
Why does decoding fail?+
A percent sign may be incomplete, contain non-hexadecimal characters, or represent malformed UTF-8 bytes.
Other local tools after url
Choose another browser tool only when the next task changes from percent-encode and decode urls locally to formatting, comparison, encoding, or measurement.
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