What is URL encoding?

URL encoding (percent encoding) replaces unsafe characters with % followed by two hex digits. For example, space becomes %20, & becomes %26. This ensures URLs work correctly across all systems and browsers.

When should I encode URLs?

Encode URLs when passing special characters as query parameters: spaces, quotes, brackets, or non-ASCII characters. Encode form data before sending to APIs. Don't encode the entire URL - only the parameter values.

What characters need encoding?

Characters that need encoding: spaces, quotes, brackets, ampersands, equals, question marks, slashes, and non-ASCII characters (emojis, Chinese, etc.). Letters, numbers, hyphen, underscore, dot, and tilde are safe and don't need encoding.

URL Encoder - Encode URLs & Text

Input Text

URL-Encoded Output

URL encoding replaces unsafe ASCII characters with % followed by two hexadecimal digits. Essential for query strings and URL parameters.

What is URL Encoder?

URL encoding (percent encoding) converts characters into URL-safe format. URLs can only contain certain ASCII characters safely - letters, numbers, and a few symbols like - and _. Characters like spaces, quotes, and special symbols must be encoded as %XX (percent followed by hex code) to prevent misinterpretation. Query parameters, form data, and API paths require URL encoding for reliable transmission.

How to Use

Enter text containing special characters
Click 'Encode' to convert to URL-safe format
Copy the encoded string for your URL or API
Spaces become %20, ampersands become %26, etc.

Why Use This Tool?

Make any text URL-safe instantly

Encode query parameters correctly

Handle special characters in URLs

Prepare data for API requests

Preserve meaning while ensuring safety

Quick encoding without manual conversion

Tips & Best Practices

Spaces encode as %20 (not + in URLs)
& encodes as %26 (critical in query strings)
= encodes as %3D (in parameter values)
/ encodes as %2F (when not path separator)
? encodes as %3F (in query values)
Encode values, not the URL structure itself

Frequently Asked Questions

What characters need URL encoding?

Characters outside safe set (A-Z a-z 0-9 - _ . ~) need encoding. Spaces, quotes, brackets, ampersands, equals, question marks, slashes, and non-ASCII characters (accented letters, Chinese, emojis) all require encoding to prevent URL parsing errors.

What's the difference between encodeURI and encodeURIComponent?

encodeURI preserves URL structure characters (:/?=&) - use for full URLs. encodeURIComponent encodes everything including structure characters - use for individual parameter values. This tool uses encodeURIComponent for safe parameter encoding.

Why is URL encoding important?

URLs have strict character rules. Unencoded special characters break URL parsing: spaces truncate URLs, ampersands split parameters prematurely, quotes break HTML attributes. Encoding ensures your data survives the URL journey intact.

How do I use encoded values in URLs?

For query strings: key=encodedValue. Example: search?q=hello%20world. For path segments: /path/encoded%2Fvalue. Decode on the receiving end. APIs typically expect URL-encoded query parameters.

What about non-ASCII characters?

Non-ASCII (accented letters, Chinese, emojis) encode as multiple %XX sequences. Each UTF-8 byte becomes a %XX. Example: café becomes caf%C3%A9. Modern browsers display decoded characters, but underlying URL remains encoded.

Should I encode entire URLs?

No - encode values within URLs, not structure. Don't encode ://, path slashes, or query separators. Encode data: parameter values, path segments containing special characters. Encoding structure characters breaks the URL.

URL Encode