What are the Upload Limitations in Google Photos?

Google Photos has a "Google Photos desktop uploader" for Mac and Windows PC. You can use this to backup photos and videos from your computer and any time you connect a camera, storage device or mobile phone. There are some limitations to upload photos and videos by using Google Photos desktop uploader.

The minimum upload size limit for photo by using desktop uploader is 512 pixels.
The maximum upload size limit for photo is 100 Megapixels and 75 MB.
The maximum upload size limit for video by using desktop uploader is 4 GB and using browser and mobile is 10 GB.

The file extensions that are supported by Google Photos are:

Photo: .jpg, .webp.
Video: .mpg, .mod, .mmv, .tod, .wmv, .asf, .avi, .divx, .mov, .m4v, .3gp, .3g2, .mp4, .m2t, .m2ts, .mts, .mkv.

But, at this moment, .tif and .bmp files are not uploaded even though they are in the supported list. It allows you to backup RAW files. If a preview jpg is embedded, only the embedded jpg will be shown in Google Photos, not the actual RAW data in full resolution.

Quick Tip to Backup your Digital Photos
If you have treasured photographs, or you take photos of everything you like, you won't want to lose them. So, what is the best way to backup photos on an ongoing basis? In the back of your mind, you know you need to backup all of your photos. But where do you start? Here's how to backup your digital life: PicBackMan is the easiest and simplest way to keep your videos safely backed up in one or more online accounts. Simply download PicBackMan (it's free!), register your account, connect to your online store and tell PicBackMan where your videos are - PicBackMan does the rest, automatically. It bulk uploads all videos and keeps looking for new ones and uploads those too. You don't have to ever touch it.