File mime type checker
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Use our fast and accurate File MIME Type Checker to instantly detect the true MIME type of any file. This tool identifies the file’s actual format by analyzing its binary signature, helping you verify uploads, prevent spoofed extensions, and ensure files are safe and valid before processing or sharing.
Checking MIME types is essential for security, file validation, server-side upload handling, and preventing malicious files disguised under incorrect extensions. This tool ensures accurate detection for PDFs, images, videos, documents, executables, archives, and hundreds of other file formats.
Ideal for developers, system administrators, security professionals, and everyday users, this MIME type checker provides instant results with no setup or login required. Simply upload your file to view its real MIME type and confirm whether it matches the expected format for your workflow or application.
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