Supported file sizes and
file types

File size

Your files won’t be backed up if they are:

• • • Photos larger than 200 MB or 150 MP

    • Videos larger than 10 GB.

    • Items smaller than 256 x 256.

File types

The supported file types are listed in the relevant Google Photos support page: Link
BUT .tif and .bmp files aren't uploaded even though they are in the "supported" list.
For RAW support see link.