Data URI Generator
Turn text, SVG or a small file into a data: URI you can inline anywhere.
URL Encoder & Decoder
Percent-encode URLs and query strings, or decode them back to plain text.
Query string breakdown
Paste a full URL above and its parameters are decoded here.
No query parameters found.
Quick Tool Overview
The URL Encoder & Decoder percent-encodes URLs and query strings and decodes them back to plain text. It offers both encoding modes, which is the distinction that prevents the most common mistake: encoding a whole URL as though it were a single parameter value.
- What it does
- Percent-encodes and decodes URLs and query string values
- You give it
- A URL, a query parameter or an encoded string
- You get back
- The encoded or decoded text
- Best for
- Tracking links, API query strings and debugging redirects
About the URL Encoder & Decoder
URLs may only contain a limited set of ASCII characters. Anything else — spaces, ampersands inside a value, accented letters, emoji — has to be percent-encoded, where each byte becomes a percent sign followed by two hexadecimal digits.
The tool offers both encoding modes, and the difference matters. Component mode escapes the reserved characters such as ampersand, equals, slash and question mark, which is correct when you are encoding a single query parameter value. Full-URI mode leaves those structural characters intact so a complete address stays usable. Encoding a whole URL in component mode is the most common mistake this tool prevents.
Key features of the URL Encoder & Decoder
Component and full-URI modes
Component mode escapes reserved characters such as ampersand, equals, slash and question mark; full-URI mode leaves them intact so a complete address stays usable.
Decodes as well as encodes
Paste a percent-encoded string and read it back as plain text, which is how you debug a redirect chain.
Handles every character set
Spaces, accented letters and emoji are encoded byte by byte to valid percent sequences.
Instant conversion
Output updates as you type, with no submit step.
Free and unlimited
Convert as many URLs as you need, with nothing sent off your device.
How to use the URL Encoder & Decoder
-
1
Pick encode or decode
Choose the direction you need with the toggle at the top.
-
2
Choose the mode
Use component mode for a single parameter value, or full-URI mode for a complete address.
-
3
Copy the result
The converted string appears immediately and can be copied with one click.
Frequently asked questions
Component mode escapes reserved characters such as & = ? and /, which is what you want for one query value. Full-URI mode preserves them so an entire URL remains valid.
Percent-encoding turns a space into %20. The plus sign comes from the older form-encoding rules used in application/x-www-form-urlencoded bodies. Both are seen in the wild.
Yes. Characters are UTF-8 encoded before percent-encoding, so Bengali, Chinese, Arabic and emoji all convert and decode correctly.
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