Supported File Types
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    Supported File Types

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    Article summary

    The following file types and extensions are currently supported by Glasswall Clean Room.

    Learn more about Glasswall CDR.

    If you don't see your desired file extension below, please let us know.

    Glasswall offers two levels of CDR for our supported file types.


    Glasswall extrapolates the file to its granular levels, then inspects and validates every component, their relationships, and their attributes in accordance with the file vendor specification.

    File TypeExtension
    Word Binary File.doc, .dot
    Excel Binary File.xls, .xlt
    PowerPoint Binary File.ppt, .pps, .pot
    PDF Document.pdf
    Office Open XML Document.docx, .docm, .dotx, .dotm
    Office Open XML Workbook.xlsx, .xltx, .xltm, .xlsm
    Office Open XML Presentation.pptx, .pptm, .ppsx, .ppam, .potm, .ppsm, .potx
    TIFF Image.tif, .tiff, .geotiff
    SVG Image.svg
    Enhanced Meta File.emf
    Windows Metafile Format.wmf
    JPEG Image.jpeg, .jpg, .jpe, .jif, .jfif, .jfi
    PNG Image.png
    GIF Image.gif
    BMP Image.bmp, .dib

    Learn more about content management & policy definitions.


    Glasswall extrapolates the file at a high level (e.g., container level), then validates these components against a subset of selected rules from the file vendor specification. For example, Glasswall may validate attributes of a container and ensure that the streams are of the correct size, running order, and encoding in relation to the container metadata. However, the contents of these streams are not further inspected, validated, or cleansed.

    File TypeExtension
    WebP Image.webp
    Waveform Audio File.wav, .wave
    Mpeg-2 Media File.mpg, .mpeg
    MP3 Audio File.mp1, .mp2, .mp3
    MP4 Media File.mp4, .m4a, .m4p, .m4b, .m4r, .m4v
    Windows Portable Executable Format.acm, .ax, .cpl, .dll, .drv, .mui, .exe, .ocx, .scr, .sys, .efi, .tsp
    Mach Object Format.o, .dylib
    Common Object File Format.o, .obj
    Executable & Linked Format.elf, .o, .so, .axf, .bin, .ko, .mod, .out

    Note: Binary executable files should be used with caution; the use of additional security filters is highly recommended. Binary files are processed as per the standard processing level but binary files may still be risky in nature.

    Zip & Archive Support

    Archive formats and file types are first identified using a structural check and then decompressed. 

    Depending on the format of extracted file types, the contents of the archive are processed and a brand-new archive with the secured content is created.

    File TypeExtensionsComment
    Zip Archive, .zip64Archive recreated
    7-Zip Archive File.7zArchive recreated
    BZip2 Archive File.bz2Archive recreated
    GZip Archive File.gzArchive recreated
    Rar Archive File.rarArchive decompression only
    Tar Archive File.tarArchive recreated
    XZ Compression based on LZMA.xzArchive recreated

    Learn more about how Glasswall processes archive file types.

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