How to download photos and videos to a computer

There are several options to download photos from Google Photos to a computer:

Please note: 

Download a single picture or video

In Google Photos:

OPTION 1:

OPTION 2:

OPTION 3:

In Album Archive

Download up to 500 selected pictures or videos using Google Photos

This method has a limitation of up to 500 pictures and/or videos that can be downloaded at one time. 

If you want to download more at once, you can add them to an album first. Albums do not have that limitation.

The pictures will be downloaded in a zip file.

When a photo is edited in Google Photos, only the edited copy will be downloaded.

Download albums using Google Photos

Download your own albums or albums shared with you

Remarks: 

Download using Google Takeout

Notes

Third party sofware

Not tried. Use at your own risk. 

https://github.com/mattd/google-photos-downloader
https://github.com/makingglitches/GooglePhotoDownload 

How to get a real backup of your "mobile photos" 

Photos from mobile devices can be synced with Google Photos, but that is not a safe backup:

Since the link between Google Photos and Google Drive stopped working in July 2019, the only automatic way offered by Google no longer does work. See https://blog.google/products/photos/simplifying-google-photos-and-google-drive/ 

There however are a few other methods:

See also 

Google Photos is NOT a "Backup" of Your Photos
Transferring Pictures from Smartphone to Computer 

ZIP files

How to preserve Descriptions, Locations and Date/time added in Google Photos

In Google Photos, "Captions" added before uploading are now shown as "Other" in the info of a photo. They always remain part of the photo. 

"Descriptions" added in Google Photos are lost when downloading from Google Photos, but transferred by other methods (Partner sharing, sharing albums).   

When using Google Takeout, a .json file in the downloaded ZIP file includes info about the added description, location, and changed date. There are tools able to merge .json and image:

If you know other ways of downloading pictures and video from Google products, please let us know in the Google Photos Help Community: https://support.google.com/photos/community