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Power Apps - Building Power Apps
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Images load slowly in Gallery

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Posted on by 502
I have built a shopping portal in powerapps where i have around 120 items. Each items has 1 to 2 images.
 
When i load the gallery with these 120 items, i notice that item images render slowly. Other fields like item price loads faster. Is there anyway i can improve item images loading speed?
 
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  • WarrenBelz Profile Picture
    148,612 Most Valuable Professional on at
    Images load slowly in Gallery
    Thanks @stampcoin,
    A couple of thngs to add here when heading down the collection path. The main one is if the gallery is dynamic (it has filters controlled by a drop-down/search box), then you would need the whole gallery content to be a Collection, or loading the newly filtered images would take longer then resolving them directly from the List.
    So that leads to whether the physical size of a collection containing 120 images would have any impact on app resources/performance.
    The other thought I had (which escaped me earlier) is to restrict the image resolution in the List field to only the size of the required thumbnail in the gallery. I think this may have potential in speeding up the loading time.
  • stampcoin Profile Picture
    2,744 on at
    Images load slowly in Gallery
    I share my thought:
    Consider splitting the image in one collection.
    1. One collection only for the image and ID.
        For mobile device, use savedata() function.
    2. Keep the live fields in a separate collection, every two minutes you update this collection only.
    3. Join the two collections when you show them.
    4. Consider using two Gallery, one for Image, and one for other fields.
     
    if your image changes often, forgot about power apps, it's not designed for that.
     
  • WarrenBelz Profile Picture
    148,612 Most Valuable Professional on at
    Images load slowly in Gallery
    If you are only after reasonable quality thumbnail images, you can try 
    ​ThisItem.Image1.Small
    but that is the best you will do if the Gallery Items are based on the list directly. Quite simply, the gallery Image control needs to render each image control from the data source field content and 120 is not going to be instant.
    What is the Items of the gallery ?
     
  • Iantaylor2050 Profile Picture
    502 on at
    Images load slowly in Gallery
    Hi @WarrenBelz
     
    I am storing images in image column in SharePoint list and i am referencing that in the gallery using code 
    ThisItem.Image1.
     
    In the startup screen i show only 5 items which shows 5 thumbnail images. No issues with that.
     
    However when i goto catalog screen where i show all 120 items, the issue arises when i scroll to view all the 120 items using my mouse. 
  • WarrenBelz Profile Picture
    148,612 Most Valuable Professional on at
    Images load slowly in Gallery
    Where are you storing the images and how are you referencing them in the Gallery ?
  • lbendlin Profile Picture
    8,041 Super User 2025 Season 1 on at
    Images load slowly in Gallery
    How many items fit on the startup screen?  Maybe 5 ?  Only load the images for these, and wait for the user to scroll or search  before you fetch more images.
     
     

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