URL & URI Component Encoder / Decoder
Encode or decode URLs, percent-encoded query strings, and inspect URL parameters with live parameter parsing.
How to Use URL & URI Component Encoder / Decoder
1. Enter or Paste Input
Paste your raw data, code payload, or text document directly into the editor.
2. Instant In-Browser Processing
Formatting, validation, or transformation algorithms execute locally with zero network latency.
3. Copy or Export Output
One-click copy formatted outputs or download clean generated files immediately.
How This Utility Works
A comprehensive in-browser URL encoder and decoder. Supports both encodeURIComponent (component level) and encodeURI (full URL level) standards, handles plus-separated query strings, and automatically parses URL query parameters into an interactive, readable inspection table. 100% client side with zero network activity.
Tokens, internal JSON payloads, and source code are parsed strictly inside your local browser runtime. Zero bytes are uploaded to remote servers.
Frequently Asked Questions
What is the difference between encodeURI and encodeURIComponent?
encodeURI preserves standard URL protocol and path delimiters (such as http://, ?, &, /, =), while encodeURIComponent percent-encodes all reserved delimiters, making it suitable for individual query string parameter values.
Does it support Unicode and emojis in query strings?
Yes, full UTF-8 multi-byte percent-encoding is supported (e.g. %F0%9F%9A%80 for rocket emoji).
Can it decode + symbols as spaces in query parameters?
Yes, it automatically normalizes both standard %20 and form-urlencoded + symbols into clean whitespace.
URL Encode / Percent-Encode Strings in Shell
Run directly in your terminal without installing external heavy dependencies
$ python3 -c 'import urllib.parse, sys; print(urllib.parse.quote(sys.argv[1]))' "user@example.com?query=1"Safely percent-encodes URI query parameters and reserved characters.
$ node -e 'console.log(encodeURIComponent(process.argv[1]))' "user@example.com?query=1"Standard JavaScript encodeURIComponent executed from your shell.