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Identify the true file format (MIME type) and view file name and size details. Perfect for both developers and everyday users.
Click or drag file here
Max 100 MB • Max 1 files
Detection Results
JSON to TypeScript Converter
Automatically convert JSON data into TypeScript interfaces or type aliases for frontend data modeling and API integration.
Simplified & Traditional Chinese Converter
Accurately convert between Simplified Chinese, Standard Traditional, Taiwanese Traditional, and Hong Kong Traditional Chinese. Supports custom dictionaries.
JSON to PropTypes Converter
Automatically convert JSON data structures into React PropTypes validation code to boost your front-end development efficiency.
JSON to TypeScript Zod Schema Converter
Automatically convert JSON data structures into TypeScript Zod validation code to improve frontend development efficiency and type safety.
JSON to TypeScript Converter
Automatically convert JSON data into TypeScript interfaces or type aliases for frontend data modeling and API integration.
Simplified & Traditional Chinese Converter
Accurately convert between Simplified Chinese, Standard Traditional, Taiwanese Traditional, and Hong Kong Traditional Chinese. Supports custom dictionaries.
JSON to PropTypes Converter
Automatically convert JSON data structures into React PropTypes validation code to boost your front-end development efficiency.
JSON to TypeScript Zod Schema Converter
Automatically convert JSON data structures into TypeScript Zod validation code to improve frontend development efficiency and type safety.
JSON to Effect Schema Converter
Convert JSON data structures into TypeScript Effect Schema code to provide a type-safe data validation solution.
Not sure about a file's true format? Our File Type Checker analyzes file content and characteristics to accurately identify its MIME type (e.g., application/pdf or image/png). It also outputs the file name and size, helping you quickly verify the file's essential properties.
How accurate is the file type detection?
The tool uses a dual-verification process checking both file header signatures (e.g., the first bytes of a PNG file are 89 50 4E 47) and content characteristics, making it much more reliable than simply checking the file extension.
Can I check multiple files at once?
The current version only supports single-file detection. For batch processing, you will need to upload files one by one.
Process only 1 file at a time (≤1GB). Encrypted or corrupted files may lead to inaccurate detection. The system does not store uploaded files, but we still advise against transmitting sensitive data.
It is always recommended to check binary file headers: for example, JPEG files should start with FF D8, and ZIP files begin with 50 4B 03 04. This tool is particularly effective for security checks on disguised extensions, such as identifying the true type of an .exe file that has been maliciously renamed to .txt.
