URL Encoder Decoder - Encode & Decode URLs
Encode special characters for safe URL usage or decode percent-encoded strings. Essential for handling query parameters, API calls, and web development.
Understanding This Tool
What It Does
Encode text to URL-safe format (percent encoding) or decode URL-encoded strings. URL encoding is essential for safe transmission of special characters in URLs and form data.
Understanding the Results
- Original Text: The input before encoding
- Encoded URL: Special characters replaced with %XX hex codes
- Spaces: Converted to %20 or + depending on context
- Special Characters: Reserved URL characters encoded safely
Common Use Cases
- URL Parameters: Encode data for URLs with query strings
- Form Data: Encode application/x-www-form-urlencoded data
- Email Parameters: Safely include user data in email links
- API Requests: Properly encode parameters for API calls
- Search Queries: Encode search terms with special characters
Pro Tips & Best Practices
- Reserved Characters: Some characters like ? and = have special meaning in URLs
- Double Encoding: Be careful not to double-encode already-encoded data
- Plus vs %20: Spaces can be encoded as + in form data or %20 in URLs
Frequently Asked Questions
URL encoding converts special characters into percent-encoded format (%20 for space, %3A for colon, etc.) so they can be safely transmitted in URLs without breaking syntax.
Encode query parameters, form data, and any user input in URLs. Spaces, ampersands, equals signs, and non-ASCII characters must be encoded to work correctly in URLs.
URL encoding handles special characters in URLs. Base64 converts binary data to text. Base64 output often needs URL encoding since it contains characters like '+' and '=' that have special URL meaning.
Both are valid. %20 is standard URL encoding. + is allowed in query strings (application/x-www-form-urlencoded). Modern browsers handle both, but %20 is more universally compatible.
Double-encoding (encoding already encoded data) can cause issues. Some servers handle it, others don't. Generally avoid double-encoding - only encode raw data once before putting it in URLs.
Frequently Asked Questions
What is URL encoding?
URL encoding converts special characters into percent-encoded format (%20 for space, %3A for colon, etc.) so they can be safely transmitted in URLs without breaking syntax.
When should I URL encode?
Encode query parameters, form data, and any user input in URLs. Spaces, ampersands, equals signs, and non-ASCII characters must be encoded to work correctly in URLs.
What's the difference between URL encoding and Base64?
URL encoding handles special characters in URLs. Base64 converts binary data to text. Base64 output often needs URL encoding since it contains characters like '+' and '=' that have special URL meaning.
Why do URLs sometimes have %20 and sometimes + for spaces?
Both are valid. %20 is standard URL encoding. + is allowed in query strings (application/x-www-form-urlencoded). Modern browsers handle both, but %20 is more universally compatible.
Can I double-encode URLs?
Double-encoding (encoding already encoded data) can cause issues. Some servers handle it, others don't. Generally avoid double-encoding - only encode raw data once before putting it in URLs.
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