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lovasoa / dezoomify

Dezoomify is a web application to download zoomable images from museum websites, image galleries, and map viewers. Many different zoomable image technologies are supported.
https://dezoomify.ophir.dev
GNU General Public License v2.0
660 stars 73 forks source link

Stuck at "Converting image..." #194

Open zstadler opened 6 years ago

zstadler commented 6 years ago

I'm trying to Dezoomify http://iiif.nli.org.il/IIIFv21/FL25553538/info.json using "select automatically" in http://ophir.alwaysdata.net/dezoomify/dezoomify.html#http://iiif.nli.org.il/IIIFv21/FL25553538/info.json

The tile download is completed and the conversion seems to get stuck.

Browser: Firefox 56.0.2 (64-bit), Windows 10

Chrome "Version 63.0.3239.84 (Official Build) (64-bit)" also seems to get stuck with a flashing window and continuous list of terminated Chrome processes: image

dancorpse commented 6 years ago

Just notice a bit problem with FF 57.0.2, it does not load the above image at all! Always stuck at 0%. And did you get a whole blank canvas or with image after the tiles completed loading? This image is about "width" : 16321, "height" : 14269, I think that's why you cannot get the final conversion, it's too huge.

zstadler commented 6 years ago

According to https://stackoverflow.com/questions/6081483/maximum-size-of-a-canvas-element FIrefox canvas limitations are:

Firefox:

Maximum height/width: 32,767 pixels Maximum area: 472,907,776 pixels (e.g., 22,528 x 20,992)

That's more than the size of this image.

dancorpse commented 6 years ago

Hmmm, but I've never achieved when height/width exceed 10,000 pixels, even if I've changed the max-alloc-size in firefox.