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Encode/decode URL components or full URLs and inspect query parameters.
Runs locally in your browser by default — nothing is uploaded first.
Use Component for query values. Use Full URL when you want to preserve : / ? & # characters.
Switch mode or scope to compare encoding and decoding behavior instantly.
Converted output will appear here.
URL Encoder / Decoder runs locally in your browser by default, so you can work with the content without uploading it first.
Encode and decode URL components or full URLs while checking query parameters side by side.
Does URL Encoder / Decoder run locally or in the cloud?
URL Encoder / Decoder runs locally in your browser by default, so you can work with the content without uploading it first.
What usually comes after URL Encoder / Decoder?
A common next step is to continue into related workflows such as Code and Data Formatting Tools.
Why is Base64 output larger than the input?
It represents three bytes as four text characters, so the encoded form is usually about one third larger before line wrapping or metadata.
A technical article on how Base64 turns bytes into text, why padding exists, how URL-safe variants differ, and why Base64 is not encryption.
URL Encoding Explained: Percent Encoding, Query Strings, and Safe LinksA technical article on percent encoding, query parameters, path segments, form encoding, and why URLs break when reserved characters are copied raw.
Reading a JWT: What Decoding Shows and What It ProvesA JWT is three base64url segments, and decoding one tells you nothing about whether it is genuine. How to read the claims, and why tokens break in URLs.
collectionCode and Data Formatting ToolsEncode and decode URL components or full URLs while checking query parameters side by side.
