URL Encoder - Percent Encoding Tool
Encode URLs with percent encoding instantly. Perfect for web developers, API testing, and URL parameter encoding with real-time conversion.
0 characters
0 characters
How to Encode URLs
Quick Guide
- Paste your URL or text into the input field
- The encoded URL appears instantly with special characters converted to %XX format
- Click "Copy" to copy the encoded URL to your clipboard
- Use the share button to create a link with your results
Batch Mode
Need to encode multiple URLs at once? Switch to batch mode to:
- Upload TXT or CSV files with URLs to encode
- Enter multiple URLs (one per line)
- Process hundreds of URLs instantly
- Download results as TXT or CSV format
What is URL Encoding?
URL encoding (also called percent encoding) converts special characters in URLs to a format that can be safely transmitted over the internet. Special characters like spaces, ampersands, and non-ASCII characters are replaced with a percent sign (%) followed by two hexadecimal digits representing the character's code. For example, a space becomes %20, and an ampersand (&) becomes %26.
Common Use Cases
- Web Development: Encode URL parameters and query strings properly
- API Testing: Format API endpoints with special characters
- Email Links: Create mailto: links with pre-filled subjects and bodies
- Form Submissions: Encode form data for GET requests
- Debugging: Decode URLs to understand what data is being transmitted
- SEO: Create clean, properly encoded URLs for better search engine indexing
Common Characters and Their Encoded Forms
| Character | Encoded | Description |
|---|---|---|
| (space) | %20 | Space character |
| ! | %21 | Exclamation mark |
| & | %26 | Ampersand |
| = | %3D | Equal sign |
| ? | %3F | Question mark |
| # | %23 | Hash/pound sign |
Features
- Real-time encoding/decoding as you type
- Proper RFC 3986 percent encoding standard
- UTF-8 character support
- Batch processing for multiple URLs
- Conversion history saved locally in your browser
- Shareable URLs to preserve your work
- 100% client-side processing - your data never leaves your device
Frequently Asked Questions
What's the difference between URL encoding and other encoding methods?
URL encoding specifically formats text for use in URLs. It differs from Base64 (binary data encoding) and HTML entity encoding (displaying special characters in HTML). URL encoding uses percent signs with hex values.
When should I encode URLs?
Encode URLs whenever you're passing data through URL parameters, query strings, or any part of a URL that contains special characters, spaces, or non-ASCII characters. This ensures proper transmission and interpretation by web servers.
Are certain characters safe and don't need encoding?
Yes, alphanumeric characters (A-Z, a-z, 0-9) and a few special characters (-_.~) are considered "unreserved" and safe to use without encoding. All other characters should be encoded in URL parameters.
Is my URL data secure?
Absolutely. All encoding/decoding happens locally in your web browser using JavaScript. Your URLs never leave your device or get sent to any server.
Can I decode an already encoded URL?
Yes! Use the direction toggle to switch between "Encode URL" and "Decode URL" modes. You can also visit our URL Decoder page.
Related Tools
You might also find these tools useful for your workflow: