What is URL encoding?

URL encoding replaces unsafe characters in a URL with percent-encoded equivalents. For example, a space becomes %20 and an ampersand becomes %26. This ensures URLs are transmitted correctly across the internet.

When should I URL encode data?

You should URL encode data when building query strings, passing special characters in URLs, or sending form data. Any character that is not a letter, number, or allowed symbol should be encoded.

What is the difference between encodeURI and encodeURIComponent?

encodeURI encodes a full URI but preserves characters like /, ?, and #. encodeURIComponent encodes everything except letters, digits, and a few symbols, making it suitable for encoding individual query parameter values.

Can I decode URLs with this tool?

Yes. This url encoder decoder tool works both ways. Paste an encoded URL to decode it back to readable text, or paste plain text to encode it for safe use in URLs.

Does URL encoding affect SEO?

Properly encoded URLs work fine for SEO. Search engines can read percent-encoded URLs without issues. However, using clean, readable slugs is generally preferred for user experience and click-through rates.

Tools Developer ToolsURL Encoder/Decoder

URL Encoder/Decoder

Encode and decode URL strings

Result

Read-only

Output will appear here...

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Step 1

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Step 2

Configure Options

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Step 3

Get Results

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Step 4

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What Is URL Encoder/Decoder?

URL Encoder/Decoder is a free online url encoder decoder tool that converts text to URL-safe format and back. It handles percent encoding for special characters, spaces, and non-ASCII text used in web addresses and query strings.

Key Features

Encode and decode URLs instantly. Supports full URI and component-level encoding. Handles Unicode and special characters. Real-time conversion as you type. Copy encoded or decoded output with one click.

Why URL Encoding Matters

URLs can only contain a limited set of ASCII characters. Special characters like spaces, ampersands, and quotes must be encoded to avoid breaking the URL structure. Proper encoding prevents errors in API calls, form submissions, and link sharing.

Common Use Cases

Encode query parameters before appending them to URLs. Decode URLs from server logs for readability. Prepare redirect URLs for OAuth callbacks. Fix broken links that contain unencoded special characters. Build deep links for mobile applications.

Tips for URL Encoding

Always encode user input before placing it in URLs to prevent injection attacks. Use encodeURIComponent for individual parameter values. Test encoded URLs in a browser to confirm they resolve correctly. Keep URLs as short as possible for better usability.

Frequently Asked Questions

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