Information applies to Google Photos in a web web app.
The Google Photos apps for iOS and Android currently don’t offer slideshow functionality.
How to Create a Google Photos Slideshow
Here’s how to create your simple Google Photos slideshow.

Alternatively, you’re free to create a new album specifically for your slideshow.
choose the photos you want to appear in the sideshow.
Continue making selections until you have chosen all the photos you want to appear in the slideshow.

choose the three-dot icon in the upper right corner of the screen.
ChooseSlideshowfrom the drop-down menu.
The slideshow shows all the chosen images in the album and starts automatically with a 5-second fade between photos.

You also can’t add or change music.
All you’re able to do is choose the album and the first photo of the slideshow.
Additionally, you’re free to’t change the order of the photos.
you might’t share your slideshow directly.
TheGoogle Play Storehas several alternatives available that allow you to add music or fine-tune the controls of your slideshow.
It’s also worth remembering you won’t be saving your slideshow separately.
you might set up a slideshow in just seconds.
FAQ
The process ofdeleting photos from Google Photosdiffers slightly depending on the platform.
Select thetrash can iconin the top-right of the window, thenMove to trashto delete all selected images.
Repeat for all of the photos you want to copy, then selectDownloadto save them to your rig.