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Basic Restrictions

You can upload any type of digital file to Box up to 15GB from the web or 200 MB from mobile devices.

Preview Restrictions

Box has an integrated file viewer which allows you to see a file in its entirety before sharing the content or downloading it to your computer.  Below are some of the common file types that support the preview function. (A complete list is available from the Box support site: What file extension types can be viewed by Box's Content Preview?)

File Type Format/Extension 
Adobe Adobe Acrobat (pdf), Adobe Illustrator (ai), Adobe Photoshop (psd)
Microsoft Office MS Excel (xls, xlsx), MS Powerpoint (ppt, pptx), MS Word (doc, docx)
Open Office Open Office Presentation (odp), Open Office Spreadsheet (ods), Open Office Word Processing (odt)
Text csv, rtf, txt, html 
WordPerfect wpd 
Image jpeg, png, gif, tiff, bmp 
Audio/Video flv, swf, mp3, mp4, avi, mov, mpg, mpeg, wmv, qt, ra, ram

Size: Content preview can display files up to 35MB in size.

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