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Content TypeBest Practice Recommendations for PreservationOther Supported File FormatsFurther Resources

Portable document format for long-term preservation (PDF/A)

Plain text (TXT)

Microsoft Word file (DOC) (DOCX)

OpenDocument text (ODT)

ImagesTIFF version 6 uncompressed (TIFF)


Portable network graphics format (PNG)


FFV1 in Matroska (MKV)

Audio video interleaved format (AVI)


MPEG-4 (MP4)


Waveform audio file format (WAVE)

Free lossless audio codec (FLAC) 
Data: Quantitative

Comma-separate values file (CSV)


SPSS file formats

STATA file formats

Microsoft Excel file (XLS) (XLSX)

Tab-delimited file (TSV)

UK Data Archive Managing and Sharing Data
Data: Qualitative

eXtensible mark-up language (XML)

Data: Geospatial 

ESRI Shapefile (SHP, SHX, DBF)

Geo-referenced TIFF (TFW)

CAD data (DWG)

Tabular GIS attribute data

WebWeb ARChive file format (WARC)  


Microsoft Outlook file (PST)  
Social MediaeXtensible mark-up language (XML)JSONDigital Preservation Coalition's Preserving Social Media
3D ObjectsContact staff  
e-Learning ObjectsContact staff JISC Significant Properties of e-Learning Objects Report
Corresponding DocumentationSee Textual Content Type