Files & Binary

MIME types, magic numbers, hex views, endianness, and file header summaries.

Decode the ELF file header (class, endianness, ABI, type, machine, entry point, and header table sizes) from pasted hex.

Swap a 16-, 32-, or 64-bit integer between big-endian and little-endian byte order, or interpret a pasted byte sequence in both orders.

Identify a likely file format from its leading bytes, or search a curated table of file signatures by name or extension.

Look up the MIME (media) type for a file extension, or the extensions for a MIME type, from a curated IANA/MDN reference table.

Decode a Windows PE executable header from hex: machine, timestamp, characteristics, the optional header, and the section table.