Supported File Types

The following files are whitelisted for upload into Kapost.

Files that are displayed in their original file format:

Audio aac, aiff, mid, mp3, ogg, rm, wav, wma
Images gif, jpeg, jpg, png
Video avi, flv, m4v, mkv, mov, mp4, mpeg, mpg, ogv, qt, swf, webm, wmv

Files whose preview are generated by Cloud Convert:

These files will appear in Kapost as a pdf for preview purposes.


azw, azw3, azw4, cbc, cbr, cbz, chm, epub, fb2, htm, htmlz, lit, lrf, mobi, pdb, pml, prc, rb, snb, tcr, txtz
Documents abw, csv, djvu, doc, docm, docx, htm, html,, keynote, lwp, md, numbers,, odp, ods, odt, pages,, pdf, pps, ppsx, ppt, pptx, rst, rtf, sda, sdc, sdw, tex, txt, wpd, wps, xls, xlsm, xlsx, xml, zabw
Images 3fr, larw, lbmp, lbmp, lcr2, lcrw, ldcr, ldng, lerf, lico, lmos, lmrw, lnef, lodd, lorf, lpef, lppm, lpsd, lraw, ltif, ltiff, lwebp, lx3f, lxcf, lxps
Vector Images ai, cdr, cgm, emf, eps, ps, sk, sk1, svg, svgz, vsd, wmf


Files that will not preview:

These files will not display previews and will instead show a link for download.

Archives 7z, rar, zip
CAD dxf, dwg
Documents dotx, em, gdoc, ics, json, log, markdown, msg, oft, ots, vst

Additional Notes:

  • There is a file size limit of 5TB for individual files that are uploaded to Kapost.
  • You can read more about the technology Kapost uses to generate document previews: Cloud Convert.
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