Parse a Chinese ID number — birth date, gender and check digit.
Validate and extract information from Chinese resident ID numbers.
Paste the content you want to process into the input area; multi-line text is supported.
Choose the operation you need (encode/decode/convert/format, etc.); some tools have toggles or dropdowns.
Click the convert button to get the result, which can be copied or downloaded with one click.
Example: paste a JSON snippet and choose "Format" to get clearly indented JSON.
Tip: everything runs locally in your browser — your content is never uploaded, safe for sensitive data.
