URL Encode/Decode
URL encoding and decoding conversion
Original Content
Encode Result
Features
Professional URL encoding/decoding tool
Dual Mode Support
Supports Component and Full URL encoding modes to meet different usage scenarios
Chinese Support
Perfect support for encoding/decoding Chinese and other Unicode characters
Quick Swap
One-click swap input and output for convenient multiple encode/decode operations
Instant Processing
Local browser processing, no need to wait for server response
Standard Compatible
Follows RFC 3986 standard, ensures universal compatibility of encoding results
Privacy & Security
All data is processed locally in the browser, never uploaded to any server
Frequently Asked Questions
Common questions about URL encoding/decoding
What is URL encoding? Why is it needed?
URL encoding (also called percent encoding) converts special characters to %XX format so they can be safely transmitted in URLs. URLs can only contain specific characters (letters, numbers, and a few symbols). Other characters like Chinese, spaces, &, etc. need to be encoded to be used.
What is the difference between Component and Full URL modes?
Component mode (encodeURIComponent): Encodes all special characters, including : / ? #, etc. Suitable for encoding URL parameter values. Full URL mode (encodeURI): Preserves URL structure characters (: / ? # @, etc.), only encodes illegal characters. Suitable for encoding complete URLs.
Why does Chinese become a format like %E4%B8%AD?
Chinese characters are first converted to UTF-8 byte sequences, then each byte is encoded as %XX format. For example, the UTF-8 encoding of "中" is E4 B8 AD, so the encoding result is %E4%B8%AD. This ensures Chinese can be correctly transmitted in various systems worldwide.
When should URL encoding be used?
Common usage scenarios include: • Passing Chinese or special characters in URL parameters • Building query strings for API requests • application/x-www-form-urlencoded encoding for form data • Handling filenames containing spaces or special symbols