What are the file sizes supported by Office for the web?

The explicit limits, where applicable, are listed in the table below. However, note that there is a 60-second file download time out that applies to all GetFile operations, and this time out can affect the perceived file size limit. In practice, this time out is rarely hit, since connectivity and bandwidth is typically very good between Office for the web and host datacenters. However, hosts should be aware of this limit.

Tip

The FileUrl property can be set to change the URL that Office for the web will use to download files from the host. This can be used to increase download speeds depending on the host’s architecture.

Table 8 File size limits

Application

Mode

Limit

Notes

Excel for the web

View

5MB

Excel for the web

Edit

5MB

PowerPoint for the web

View

See notes

No limit, but subject to the 60 second time out for file downloads as described above.

PowerPoint for the web

Edit

300MB

While the upper limit is 300MB, this is still subject to the overall 60 second time out for file downloads so it is possible that smaller files will hit that timeout.

Word for the web

View

See notes

No limit, but subject to the 60 second time out for file downloads as described above.

Word for the web

Edit

50MB