RFC 3986 URL Percent Encoder and Query Decoder
Prevent broken HTTP requests and parse tangled query parameters effortlessly.
Key Highlights:
- Bidirectional encode/decode
- Query string breakdown table
- RFC 3986 compliant
URL Encoder & Decoder
Popular Runs in Your BrowserEncode a full URL (keeps its structure) or a single parameter value (encodes everything special), and decode percent-encoded text. Includes an interactive query parameter table breakdown.
Browser-based: this tool works on your device and does not send your input to an Alona Tool server. See the Privacy Policy for details.
Fast Processing
Loading URL Encoder & Decoder… This tool is an interactive page and needs JavaScript enabled in your browser.
Example Usage & Test Cases
Parameter value (checkbox on)
Input Scenario:
Hello World & Company?
Generated Result:
Hello%20World%20%26%20Company%3F
Whole URL (checkbox off)
Input Scenario:
https://example.com/a b?q=1&r=2
Generated Result:
https://example.com/a%20b?q=1&r=2
How It Works
1
Executes standard RFC 3986 percent-encoding and decoding with complete UTF-8 character support.
Frequently Asked Questions
By default the tool encodes like encodeURI: spaces and non-ASCII characters become percent codes, but URL structure characters such as : / ? & = # stay as they are so a full address keeps working. Tick "Encode Special URL Chars" to encode like encodeURIComponent, which also converts those characters; use that for a single query-parameter value.
Use the default for a complete URL, and the checkbox mode for text you will put inside a query string, such as a search phrase containing & or ?.