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Convert between URL strings and hex-encoded formats online to easily solve special character transmission issues.
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When a URL contains non-ASCII characters, spaces, or reserved characters (like ?, &, =), transmitting it directly can cause data loss or parsing errors. This tool solves this issue through URL hex encoding (also known as percent-encoding). It converts every unsafe character in the URL into a percent sign "%" followed by two hexadecimal digits. For example, a space " " is encoded as "%20". This encoding process ensures that the URL is transmitted completely and accurately over protocols like HTTP.
Q: What is the difference between "%20" and "+" in URL encoding?
A: "%20" is the official percent-encoding for a space, while "+" is an alternative representation for spaces in the application/x-www-form-urlencoded media type. In the URL path, "%20" should be used. In query strings, you might encounter both, but this tool strictly outputs "%20" to ensure universal compatibility.
Q: Which characters are not encoded?
A: Letters (A-Z, a-z), numbers (0-9), and a few special characters like hyphens (-), underscores (_), periods (.), and tildes (~) are generally considered safe characters and will remain unchanged. Other characters, such as non-ASCII text, spaces, and punctuation, will be encoded.
Please verify the completeness and correctness of the URL before encoding. The encoded result is a string of percent signs and hexadecimal digits that can be directly used to construct HTTP requests. When decoding, ensure the input percent-encoded format is complete and valid (e.g., "%E4%B8%AD"); otherwise, it may result in decoding failures or garbled text. This tool is designed for single-item processing. For batch processing, please handle them in segments.
When doing web development or API debugging, correctly encoding URL parameters is crucial. A common mistake is encoding only the parameter values while ignoring that parameter names might also contain special characters. It is recommended to encode the entire query string (e.g., "name=John Doe&city=New York"). For example, entering "https://example.com/search?q=编程工具" will result in "https://example.com/search?q=%E7%BC%96%E7%A8%8B%E5%B7%A5%E5%85%B7" after encoding. This ensures the phrase "编程工具" is not parsed incorrectly during transmission. For URLs containing a hash (#), note that the hash fragment (everything after the #) is typically not sent to the server, but if encoding is needed, the tool will process it together.
