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Editorial Team
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Asked: 2026-06-10T02:18:56+00:00

I am creating a kind of ‘map’ in my app. This is basically only

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I am creating a kind of ‘map’ in my app. This is basically only viewing an image with an imageView/scrollView. However, the image is huge. Like 20,000×15,000 px or something. How can I tile this image so that it fits? When the app tiles by itself, it uses way too much memory, and I want this to be done before the app I launched, and just include the tiled, not the original image. Can photoshop do this?
I have not done a complete search for this yet, as I am away, and typing on an iPhone with limited network connection..

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1 Answer

  1. Editorial Team

    Apple has a project called PhotoScroller. It supports panning and zooming of large images. However, it does this by pre-tiling the images – if you look in the project you will see hundreds of tiles for various zoom sizes. The project however does NOT come with any kind of tiling utility.

    So what some people have done is create algorithms or code that anyone can use to create these tiles. I support an open source project PhotoScrollerNetwork that allows people to download huge jpegs from the network, tile them, then display them as PhotoScroller does, and while doing research for this I found several people who had posted tiling software.

    I googled “PhotoScroller tiling utility” and got lots of hits, including one here on SO

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