Why are My RAW Photos Shown in Low Resolution on Google Photos?

Google Photos allows you to backup RAW files to your account. The supported photo file extensions by Google Photos are .jpg, .webp, .crw, .cr2, .nef, .dng, .orf, .raf, .arw, .pef and .rw2. If a .jpeg preview is embedded in the RAW, then the preview is used to be shown in Google Photos, besides its resolution or whether you have uploaded in "High Quality" or "Original size". If you will not able to see the jpeg preview in the DNG format, then the RAW data is used to generate a full resolution preview to be shown.

You can embed a full size jpeg as preview photo using Adobe DNG convertor. You can also remove the jpg preview entirely. If you want to upload RAW photos in "High Quality", then you can export them to jpg. So it will save a lot of bandwidth.

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.