UX: Progressive image loading #711

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opened 2026-02-19 23:14:52 -05:00 by deekerman · 4 comments

deekerman commented

2026-02-19 23:14:52 -05:00

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Originally created by @benmccann on GitHub (Jan 17, 2021).

Originally assigned to: @lastzero on GitHub.

It looks to me like Google Photos does something that's pretty cool. When you click a thumbnail it looks like they use it to show a low resolution version of the image while the high res image is loading. Then once the high res image has been fetched they replace the low res version with the high res version in the lightbox.

Originally created by @benmccann on GitHub (Jan 17, 2021). Originally assigned to: @lastzero on GitHub. It looks to me like Google Photos does something that's pretty cool. When you click a thumbnail it looks like they use it to show a low resolution version of the image while the high res image is loading. Then once the high res image has been fetched they replace the low res version with the high res version in the lightbox.

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2026-02-19 23:14:52 -05:00

deekerman commented

2026-02-19 23:14:53 -05:00

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@lastzero commented on GitHub (Jan 17, 2021):

I would assume these are progressive JPEGs? Not sure why there is no standard support for this yet in Golang, only decoding from what I know.

@lastzero commented on GitHub (Jan 17, 2021): I would assume these are progressive JPEGs? Not sure why there is no standard support for this yet in Golang, only decoding from what I know.

deekerman commented

2026-02-19 23:14:53 -05:00

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@alexislefebvre commented on GitHub (Jan 17, 2021):

I tested and I observe this too, it looks like the thumbnail is zoomed when passing in fullscreen mode, then the "big" image is loaded and replace it.

I wonder how it could work with PhotoPrism thumbnails that are square.

@alexislefebvre commented on GitHub (Jan 17, 2021): I tested and I observe this too, it looks like the thumbnail is zoomed when passing in fullscreen mode, then the "big" image is loaded and replace it. I wonder how it could work with PhotoPrism thumbnails that are square.

deekerman commented

2026-02-19 23:14:54 -05:00

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@lastzero commented on GitHub (Jan 17, 2021):

We already preload images in the photo viewer, so they should be loaded when you press next - just not when opening a photo in full screen for the very first time. Not sure if optimizing this further provides the most value to our users at this point in time - seems there are more important issues.

@lastzero commented on GitHub (Jan 17, 2021): We already preload images in the photo viewer, so they should be loaded when you press next - just not when opening a photo in full screen for the very first time. Not sure if optimizing this further provides the most value to our users at this point in time - seems there are more important issues.

deekerman commented

2026-02-19 23:14:54 -05:00

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@lastzero commented on GitHub (Jan 17, 2021):

Before doing more research on this, maybe you can take a look at #895?

@lastzero commented on GitHub (Jan 17, 2021): Before doing more research on this, maybe you can take a look at #895?