This API lets you validate file types using MIME type detection and binary signature (magic number) based analysis.

File type validation is a critical security and data integrity measure for applications that accept file uploads. Rather than trusting the file extension or client-supplied MIME type alone, this API inspects the actual file content — reading binary signatures and performing content sniffing — to determine the true file type and verify it matches the claimed extension and MIME type. This helps prevent file spoofing attacks, ensures data consistency in storage pipelines, and enforces upload policies reliably.

You can validate files by uploading them directly or by providing a publicly accessible URL. Try out the File Validator API in the API playground for free and integrate reliable file type checking with a simple API call.

Supported File Formats:

PDF, PNG, JPEG, GIF, WebP, BMP, TIFF, SVG, ZIP, RAR, 7-Zip, GZIP, MP4, MP3, WAV, OGG, FLAC, DOC, DOCX, XLS, XLSX, PPT, PPTX, CSV, TXT, JSON, XML, HTML, CSS, JavaScript, Windows Executable, Linux Executable.


Validate File Type API