If this tool helped you, you can buy us a coffee ☕
Convert special characters and spaces into percent-encoded URLs and vice versa to solve character compatibility issues in web development and data transmission.

URL to JSON Parser
Parse URL strings into structured JSON to quickly extract key information like protocols, parameters, and paths.

URL Hex Encoder & Decoder
Convert between URL strings and hex-encoded formats online to easily solve special character transmission issues.

URL Redirect Checker
Analyze URL redirect paths and HTTP status codes to diagnose redirect issues and boost your SEO.

Escape Encoder & Decoder
Free online tool for Escape encoding and decoding strings, making URL parameter passing and data processing easier.

URL to JSON Parser
Parse URL strings into structured JSON to quickly extract key information like protocols, parameters, and paths.

URL Hex Encoder & Decoder
Convert between URL strings and hex-encoded formats online to easily solve special character transmission issues.

URL Redirect Checker
Analyze URL redirect paths and HTTP status codes to diagnose redirect issues and boost your SEO.

Escape Encoder & Decoder
Free online tool for Escape encoding and decoding strings, making URL parameter passing and data processing easier.

URL Extractor
Parse and extract valid URLs from text or HTML source code with support for multiple protocols.
When you directly use non-ASCII characters, spaces, or special characters like & and ? in a URL, browsers and servers may fail to parse them correctly, leading to broken links or data loss. URL encoding (also known as percent-encoding) is a mechanism designed to solve this issue. It converts each unsafe character into a percent sign (%) followed by two hexadecimal digits. The core function of this tool is to perform this secure two-way conversion for URLs and their parameters, processing single characters (or multi-byte sequences in UTF-8 encoding) as the basic unit.
Q: Should spaces in a URL be encoded as %20 or a plus sign (+)?
This depends on the application scenario. In most modern web standards and APIs (following RFC 3986), spaces should be encoded as %20. The plus sign (+) is primarily used for HTML form submissions (application/x-www-form-urlencoded format) or when interacting with legacy systems. This tool allows you to choose based on your needs.
Q: Does URL encoding change non-ASCII characters like Chinese?
Yes. Non-ASCII characters cannot be used directly in URLs. Based on the UTF-8 character set, this tool converts each non-ASCII character into a continuous sequence of percent-encoded values. For example, the Chinese characters "计算器" will be encoded as "%E8%AE%A1%E7%AE%97%E5%99%A8".
Please ensure you use the same standard (RFC 3986 or RFC 1738) for both encoding and decoding; otherwise, the results may be incorrect. Avoid encoding an already encoded string a second time (double encoding). When processing non-ASCII characters, verify that the source data is UTF-8 encoded to prevent garbled text. This tool processes text strings and does not support direct file uploads or batch file processing.
For web developers, it is crucial to encode variable values when handling GET request parameters or dynamically generating URLs. A typical scenario: embedding the search keyword "price comparison" into a URL. Direct concatenation will cause spaces to be parsed incorrectly. The correct approach is to encode it as "price%20comparison" (RFC 3986) or "price+comparison" (form format). While you can use encodeURIComponent() in JavaScript or urllib.parse.quote() in Python to achieve similar functionality, this tool provides a more intuitive visual comparison and standard selection, making it ideal for debugging and verification.