About URL Encoder
Percent-encoding (URL encoding) is a mechanism for encoding information in a Uniform Resource Identifier (URI).
The Importance of Percent-Encoding
URL encoding, also known as percent-encoding, is a mechanism for encoding information in a Uniform Resource Identifier (URI). Characters not allowed in a URL are replaced by a % followed by two hexadecimal digits.
Frequently Asked Questions
Why do I need to encode URLs?
Special characters like spaces, question marks, and ampersands have specific meanings in URLs. If they are part of your data, they must be encoded to avoid breaking the link.
Is it safe for UTF-8 characters?
Yes, our tool fully supports international characters. It correctly encodes non-ASCII characters into their respective UTF-8 byte sequences.
Does it encode the entire URL?
You should typically only encode the query parameters or specific parts of the path, as encoding the protocols (http://) may make the URL unusable.
How to use?
Paste your URL string. Select Encode to convert special characters, or Decode to revert them.
Fix broken links caused by special characters
Prepare data for API requests
100% Client-side privacy
URL Optimization Tips
🔍 SEO Friendly: Ensure your URL paths don't contain 'unsafe' characters that might confuse search engine crawlers.
📋 Paste & Clean: Copy links from social media that contain messy tracking parameters and use this tool to decode and clean them up.
🚀 API Ready: Use this tool to prepare data strings before passing them into cURL commands or fetch requests.
URL Encoder/Decoder Encyclopedia
Percent-Encoding
URL encoding converts characters into a format that can be transmitted over the Internet. URLs can only be sent over the Internet using the ASCII character-set. Non-ASCII characters must be replaced with a `%` followed by two hexadecimal digits.
Reserved Characters
Certain characters have special meaning in URLs. For example, `?` starts a query string, `&` separates parameters, and `=` separates keys and values. If you need to send these characters *as data*, they must be encoded (e.g., `?` becomes `%3F`).
UTF-8 Support
Modern browsers use UTF-8 for URL encoding. This allows you to use characters from any language (Chinese, Arabic, Emoji) in URLs, which are then encoded into safe byte sequences.
SEO Impact
While search engines can understand encoded URLs, clean and readable URLs are better for user experience. Avoid excessive encoding in the main path of your URL.
Security
URL encoding is crucial for preventing Injection attacks. By encoding user input before inserting it into a URL, you prevent attackers from injecting malicious parameters or redirect commands.