PPT MIME Type

About PowerPoint 97–2003 presentation files

The binary PowerPoint format, in the same OLE2 container as .doc and .xls. Browsers can’t display it, so it is always downloaded.

File signature

PPT files start with D0 CF 11 E0 A1 B1 1A E1 (OLE2 compound file). The extension and the type a browser reports for an upload both come from the file name, so check these bytes on the server before trusting a file.

Serve .ppt with the right Content-Type

Content-Type: application/vnd.ms-powerpoint

application/vnd.ms-powerpoint ppt pps pot;

AddType application/vnd.ms-powerpoint .ppt .pps .pot

@ppt path *.ppt *.pps *.pot
header @ppt Content-Type "application/vnd.ms-powerpoint"

curl -sI https://example.com/file.ppt | grep -i '^content-type'
# Content-Type: application/vnd.ms-powerpoint

Set the type in code

res.set('Content-Type', 'application/vnd.ms-powerpoint');
// Or make the browser download it:
res.attachment('file.ppt');

import mimetypes

mimetypes.add_type('application/vnd.ms-powerpoint', '.ppt')  # if your system doesn't know it
mimetypes.guess_type('file.ppt')[0]  # 'application/vnd.ms-powerpoint'

mime.AddExtensionType(".ppt", "application/vnd.ms-powerpoint")
w.Header().Set("Content-Type", "application/vnd.ms-powerpoint")

Accept .ppt uploads

<input type="file" accept=".ppt,.pps,.pot,application/vnd.ms-powerpoint">

The accept attribute only filters the file picker; users can still choose another file. Listing the extension as well as the type matters, because operating systems don’t always report the type you expect.

Related types

• .pptx (application/vnd.openxmlformats-officedocument.presentationml.presentation): PowerPoint presentation
• .pdf (application/pdf): PDF document
• .doc (application/msword): Word 97–2003 document

More documents

.docx , .xls , .xlsx , .odt , .rtf , .epub . Look up any extension or type with the MIME type lookup.

Sources

• IANA registration: application/vnd.ms-powerpoint
• MDN: Common media types

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Frequently asked questions