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ResearchWorks Archive List of Preferred File Formats

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Format Highest Confidence Medium Confidence
Lowest Confidence
Text
  • Plain text -- US-ASCII, UTF-8, UTF-16 with BOM (.txt, text/plain)
  • SGML with included DTD (.sgm, .sgml; application/sgml)
  • XML with included schema (.xml; text/xml)
  • PDF/A-1 --  ISO 19005-1 (.pdf; application/pdf)
  • Plain text -- ISO 8859-x (.txt; text/plain)
  • Rich Text Format 1.x (.rtf; text/richtext)
  • Cascading Style Sheets (.css; text/css)
  • HTML (.html, .htm; text/html)
  • LaTeX with referenced files (.latex; application/x-latex)
  • Open Office (.odt, .sxw; application/vnd.oasis.opendocument.text, application/vnd.sun.xml.writer)
  • OOXML (.docx; application/vnd.openxmlformats-officedocument.wordprocessingml.document)
  • PDF with fonts embedded (.pdf; application/pdf)
  • Microsoft Word (.doc; application/msword)
  • WordPerfect (.wpd;

    application/vndwordperfect)

  • all others

Raster

Graphics

  • TIFF -- uncompressed (.tiff; image/tiff)
  • JPEG2000 -- lossless (.jp2; image/jp2)
  • PNG (.png; image/png)
  • TIFF -- compressed (.tiff; image/tiff)
  • JPEG (.jpg; image/jpeg)
  • JPEG2000 -- lossy (.jp2; image/jp2)
  • GIF (.gif; image/gif)
  • Digital Negative DNG (.dng; image/tiff)
  • BMP (.bmp; image/x-ms-bmp)
  • PhotoShop (.psd; application/x-photoshop)
  • MrSID (.sid; image/x-mrsid)
  • RAW files
  • all others

Vector

Graphics

  • SVG -- no Java script binding (.svg; image/svg+xml)
  • Computer Graphics Metafile (.cgm; image/cgm)
  • Encapsulated Postscript (.eps; application/postscript)
  • Macromedia Flash (.swf; application/x-shockwave-flash)
  • all others
Audio
  • AIFF -- PCM (aif, aiff; audio/aiff)
  • WAV -- PCM (.wav; audio/x-wav, audio/wav)
  • SUN audio -- uncompressed (.au, .snd; audio/basic)
  • Standard MIDI (.mid; audio/midi)
  • Ogg Vorbis (.ogg; audio/ogg)
  • Free Lossless Audio Codec (.flac; audio/x-flac)
  • MP3 (.mp3; audio/mpeg, audio/mp3)
  • Advance Audio Coding (.mp4; audio/mp4, audio/m4a)
  • AIFC -- compressed AIFF (.aifc; audio/aiff)
  • RealAudio (.rm, .ra; audio/vnd.rn-realaudio, application/vnd.rn-realmedia)
  • Windows Media Audio (.wma; audio/x-ms-wma)
  • WAV -- compressed (.wav; audio/x-wav, audio/wav)
  • all others
Video
  • AVI -- uncompressed (.avi; video/avi, video/msvideo, video/x-msvideo)
  • Motion JPEG 2000 (.jp2; video/mj2)
  • QuickTime -- uncompressed, motion JPEG (.mov; video/quicktime, video/x-quicktime)
  • MPEG-1, MPEG-2 (.mp1, .mp2; video/mpeg, video/mpeg2)
  • MPEG-4 (.mp4; video/mp4)
  • Ogg Theora (.ogv, .ogg; video/ogg)
  • Windows Media Video (.wmv; video/x-ms-wmv)
  • RealVideo (.rm, .rv; video/vnd.rn-realvideo, application/vnd.rn-realmedia)
  • all others

Spreadsheet

or Database

  • Comma-separated Values (.csv, .txt; text/csv)
  • Delimited text
  • dBASE (.dbf; application/dbase, application/x-dbase, application/dbf)
  • OpenOffice (.ods; application/vnd.oasis.opendocument.spreadsheet)
  • OOXML (.xlsx; application/vnd.openxmlformats-officedocument.spreadsheetml.sheet)
  • Excel (.xls; application/vnd.ms-excel)
  • all others
Computer Programs
  • Computer program source code
  • Compiled / Executable files
Presentation
  • OpenOffice (.odp; application/vnd.oasis.opendocument.presentation)
  • OOXML (.pptx; application/vnd.openxmlformats-officedocument.presentationml.presentation)
  • PowerPoint (.ppt; application/vnd.ms-powerpoint)
  • all others

*** The information in parentheses following the format is the most common file extensions followed by mime type.

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