SeaDragon image size limit

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  • Updated 10 years ago
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Just wondering what the size limit is for an image on Seadragon? Is the limit related to the server it's hosted on? I've been able to get a 1.4 gigapixel image (http://seadragon.com/view/17cq) to process, but can't seem to get a larger one to finish. It gets to a certain percent then returns an error. Not sure if my server is timing out or it's just too big for SeaDragon.
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mattfox

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Posted 10 years ago

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Aseem Kishore, Former Employee

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Hey Matt,

I don't think there's a hard limit necessarily; I think it's based on a combination of factors. Can you point us to the image that's failing? We can try and take a look to see what's going on.

Cool to see that your 1.4 gigapixel image successfully converted though! =)
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mattfox

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The 2.2 gigapixel image that failed was just a slightly more detailed version of the SeaDragon image linked above so probably no worth redoing. However, I do have a 15 gigapixel version of the map linked above that covers the entire globe that would look amazing with SeaDragon. Might even make a good showcase image. But I'd need some help on your end to process it. Let me know if you're interested and I can upload it to my webserver (it's a 9 gig PNG file). I understand that's a lot of resources on your end, so no problem if you want to pass.
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mattfox

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The 2.2 gigapixel image that failed was just a slightly more detailed version of the SeaDragon image linked above so probably no worth redoing. However, I do have a 15 gigapixel version of the map linked above that covers the entire globe that would look amazing with SeaDragon. Might even make a good showcase image. But I'd need some help on your end to process it. Let me know if you're interested and I can upload it to my webserver (it's a 9 gig PNG file). I understand that's a lot of resources on your end, so no problem if you want to pass.
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Aseem Kishore, Former Employee

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Cool, let me get back to you on the 15 gigapixel question! =)

Do send me the Seadragon.com URL for your 2.2 giagpixel image though -- I'd like to take a look at why it failed. Thanks!
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mattfox

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Aseem...thanks for response...

So here is link to a 3.4 gigapixel (2.5 GB) image that wouldn't complete. It is similar to the image linked in my original post above, but a little more detailed.
http://www.gelib.com/maps/SeaDragon/U...

And if you're really brave, here is link to the 14.2 gigapixel map (8.5 GB PNG). This one is similar to the one above, but covers the entire Earth
http://www.gelib.com/maps/SeaDragon/G...

I have several others similar maps that aren't quite so huge posted at my blog. Have several others that I plan on doing. SeaDragon is a great way to view these huge maps.
http://www.gelib.com/microsoft-sea-dr...
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Dan Cory, Official Rep

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One thing that might help is to create your images in 24-bit PNG instead of 32-bit PNG. Since you aren't actually using the opacity (as far as I can tell), it would make your images easier to handle.

You might also try the same image in JPEG format.

We work hard to handle every image you can throw at us, but with these very large files we frequently find limits we didn't previously know about.