When adding items to your archive, often you will upload one or more files (images, documents, et al) associated with that item.
Adding_Files

File Types

Accepted File Extensions

Below is a list of file extensions and MIME Types for Omeka.net. If you are unable to upload a file because of a MIME type error, check this list to be sure the file is accepted. Please note there is a 128mb file size limit for any single file.

File Extensions:

aac, aif, aiff, asf, asx, avi, bmp, c, cc, class, css, divx, doc, docx, exe, gif, gz, gzip, h, ico,
j2k, jp2, jpe, jpeg, jpg, m4a, mdb, mid, midi, mov, mp2, mp3, mp4, mpa, mpe, mpeg, mpg, mpp, odb, odc, odf, odg, odp, ods, odt, ogg, pdf, png, pot, pps, ppt, pptx, qt, ra, ram, rtf, rtx, swf, tar, tif, tiff, txt, wav, wax, wma, wmv, wmx, wri, xla, xls, xlsx, xlt, xlw, zip

Mime Types:

application/msword, application/ogg, application/pdf, application/rtf, application/vnd.ms-access, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/vnd.ms-project, application/vnd.ms-write, application/vnd.oasis.opendocument.chart, application/vnd.oasis.opendocument.database, application/vnd.oasis.opendocument.formula, application/vnd.oasis.opendocument.graphics, application/vnd.oasis.opendocument.presentation, application/vnd.oasis.opendocument.spreadsheet, application/vnd.oasis.opendocument.text, application/x-ms-wmp, application/x-ogg, application/x-gzip, application/x-msdownload, application/x-shockwave-flash, application/x-tar, application/zip, audio/aac, audio/aiff, audio/mid, audio/midi, audio/mp3, audio/mp4, audio/mpeg, audio/mpeg3, audio/ogg, audio/wav, audio/wma, audio/x-aac, audio/x-aiff, audio/x-midi, audio/x-mp3, audio/x-mp4, audio/x-mpeg, audio/x-mpeg3, audio/x-mpegaudio, audio/x-ms-wax, audio/x-realaudio, audio/x-wav, audio/x-wma, image/bmp, image/gif, image/icon, image/jpeg, image/pjpeg, image/png, image/tiff, image/x-icon, image/x-ms-bmp, text/css, text/plain, text/richtext, video/asf, video/avi, video/divx, video/mp4, video/mpeg, video/msvideo, video/ogg, video/quicktime, video/x-ms-asf, video/x-ms-wmv, video/x-msvideo, text/rtf

File Display Order

Once files are added to an item, you may click and drag the files into the preferred display order for both public and admin item pages. This can be done from the Item Edit Page, under the Files tab.

Files with Thumbnails

Thumbnail previews are created for all files types on Omeka.net.

File size limitations

128mb per file.

File Metadata

You may add full Dublin Core metadata for every file uploaded.

You can access the metadata for a file from the record for the item to which it is attached. Either click on the link to File Metadata under the admin/items/show/ page or go to the edit page for the item, click on the File tab, and then click edit, as in the image below.

Close up of files associated with an item

From the File Metadata page, you can edit the metadata for the file and also find links to the various versions of the file (for example, Original and Thumbnail files for an image).