Loading a large gallery - Githubissues

fengyuanchen / viewerjs

JavaScript image viewer.

https://fengyuanchen.github.io/viewerjs/

MIT License

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Loading a large gallery #426

Open devamchakrabarty opened 3 years ago

devamchakrabarty commented 3 years ago

Hi, when we try to load the viewer with 100 or more images, we have noticed

the first image waits for quite a while before being shown. We think it waits until all 100 GET requests to the server have completed.
clicking a thumbnail sends 2 GET requests to the server but the thumbnail image is not refreshed with the latest image returned by the server.
If we call update on the viewer it refreshes all the images in the gallery and therefore takes quite some time again.

So, our requests / questions are

Is there an efficient way of lazy loading many images in a gallery?
Can the first image be shown immediately while the other images are still loading?
Can the thumbnails be refreshed without having to re-render the entire viewer?

fengyuanchen commented 3 years ago

The Viewer.js may not be a good solution for a big list of images currently. A lot of improvements should be done in this case.