v6.1.1

OfficeOpenXml Namespace

Corrected the namespace of the OfficeOpenXml class, which has been moved back to FileSignatures.Formats.

Thanks to @lk-luca for the contribution.

v6.1

Word Templates

Support for Word templates (.dotx) has been added.

Macro-enabled Office Documents

Improved detection of macro-enabled Office documents, allowing their type to be determined before a macro has been added to the file.

Thanks to @wullemsb for the contributions.

v6.0

RAR Format

Support for RAR 5 and RAR 4 has been added. The existing Rar class has been renamed to Rar4, which will be a breaking change if it was being directly referenced.

Thanks for @mexvod for the contribution.

v5.3

Native AOT

Support for .NET Native AOT (Ahead-of-Time) compilation has been added.

A new GetBuiltInFormats() has been added to FileFormatLocator to access the built-in types without using reflection.

Thanks to @hcoona for the contribution.

v5.2

New Formats

• Adds support Excel binary format.
• Adds support for Google WebP format.
• Adds support for Photoshop document format.
• Adds support for MIDI format.
• Adds support for TAR format.
• Adds support for flash video format.
• Adds support for FLAC format.
• Adds support for 7-zip format.
• Adds support for GZip format.

v5.1.1

PDF Format

Fixed a issue with the Pdf and AdobePdf formats which could cause files to be incorrectly categorized as a PDF.

v5.1.0

New Formats

• Adds support for Icon format.
• Adds support for office files with macros.

Thanks to @codethug for the contribution.

v5.0.2

Executable Media Type

Changed the media type for the Executable format to be application/vnd.microsoft.portable-executable so that it aligns with the official IANA media type for Windows executables.

v5.0

PDF Format

Fixed an issue where PDFs were not recognized if the header contains data before the %PDF signature, or where the signature is in the format %!PS−Adobe−N.n PDF−M.m.

Thanks to @MaximeLaffaire for the contribution.

.NET Framework Targets Removed

.NET Framework 4.5.2 and 4.6.1 have been removed as specific target frameworks as these are no longer supported.

v4.4.1

Fixed an issue with vcard file recognition. Thanks to @mburumaxwell for the contribution.