URL Encoder Online — Percent-Encode URLs & Query Parameters

Q: What is the difference between encodeURI and encodeURIComponent?

`encodeURI` preserves full URL structural delimiters (such as `http://`, `:`, `/`, `?`), whereas `encodeURIComponent` encodes all reserved characters so that text can be safely embedded as an isolated parameter value.

Text to Encode

URL-Encoded Output

URL-encoded output will appear here as you type...

What is URL Encoder?

URL Encoder is a developer utility that converts non-ASCII characters and reserved URL delimiters into their percent-encoded (`%XX`) byte representations according to RFC 3986.

How URL Encoder Works

The tool uses `encodeURIComponent()` to convert reserved characters (such as spaces to `%20`, `&` to `%26`, and `?` to `%3F`) and UTF-8 multibyte characters into valid hexadecimal escape sequences, ensuring strings can be passed safely inside query parameters.

Key Features

✓RFC 3986 compliant percent-encoding
✓Full UTF-8 multibyte character encoding support
✓Real-time instant output calculation

Common Use Cases

•Encoding search queries and tracking parameters passed in URL query strings
•Constructing OAuth redirect URIs and callback URLs
•Sanitizing dynamic variables in REST API endpoint paths

Examples & Sample Data

Encoding Query Parameter with Special Characters

Input

search term & category=books / tools

Output

search%20term%20%26%20category%3Dbooks%20%2F%20tools

Encodes spaces as `%20`, ampersands as `%26`, equals as `%3D`, and slashes as `%2F`.

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100% Client-Side Privacy Guarantee

All processing runs entirely in your local browser sandbox.

How to Use URL Encoder

1
Paste your URL or parameter string into the input box.
2
Click 'Encode URL'.
3
Copy the percent-encoded URL string.

Frequently Asked Questions

What is the difference between encodeURI and encodeURIComponent?+

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Related Technical Guides

Web Standards

URL Encoder