Can't Download at High Resolution (Google Arts and Culture)

[solvethis]

Hello, I just found out Dezoomify on Reddit. I am trying to download an art piece from Osman Hamdi as high as possible.

Actually, the program gives me (2373x4400), very high res image, but I saw more available sizes on different site.

Is there any way to download the image on a higher resolution than the default one? Can I select a size before saving?

Thank you, It is great to have an alternative of GigaFineArt

[lovasoa]

Dezoomify currently restricts the maximum width and height of the downloaded image to 8192 x 8192 (it will take the largest zoom level that has both its width and its height under 8192). There is two reasons for that:

• dezoomify uses a free shared web host, and the google arts & culture dezoomer requires us to make a request to our host for each tile of the image. We don't want to put our server under too much load.
• Your browser probably cannot create a canvas with an area of more than half a billion pixels anyway.

GAPDecoder is another project that takes the form of a python script. It is less easy to install, but has none of the above limitations.

We may still discuss the limit (8192 is quite arbitrary). I could also add a way for advanced users to work around it.

[lovasoa]

By the way, does GigaFineArt work for you ? I tried it, and it produced completely black images.

[lovasoa]

I updated dezoomify. The limit is now set on the total area in pixels of the image. It is 268,435,456 by default and you can override it by setting UI.MAX_CANVAS_AREA = 1073741824 in your browser console before starting the dezooming. However, be warned that your browser may refuse to create such a large canvas.

[solvethis]

By the way, does GigaFineArt work for you ? I tried it, and it produced completely black images.

I tried on many browsers. It only works on Mozilla Firefox. So it doesn't work on Safari, Edge and Internet Explorer etc.

[solvethis]

Dezoomify currently restricts the maximum width and height of the downloaded image to 8192 x 8192 (it will take the largest zoom level that has both its width and its height under 8192). There is two reasons for that:

• dezoomify uses a free shared web host, and the google arts & culture dezoomer requires us to make a request to our host for each tile of the image. We don't want to put our server under too much load.
• Your browser probably cannot create a canvas with an area of more than half a billion pixels anyway.

GAPDecoder is another project that takes the form of a python script. It is less easy to install, but has none of the above limitations.

We may still discuss the limit (8192 is quite arbitrary). I could also add a way for advanced users to work around it.

I understand what would happen to browser. Actually I tried to download Python but I am not be able to use it. My programming skills are just low.

[solvethis]

I updated dezoomify. The limit is now set on the total area in pixels of the image. It is 268,435,456 by default and you can override it by setting UI.MAX_CANVAS_AREA = 1073741824 in your browser console before starting the dezooming. However, be warned that your browser may refuse to create such a large canvas.

Thank you very much :) With this high-quality art pieces is more accessible to me. Also, I won't need a google account for adding favorites anymore. Because I can access them offline when I downloaded.

[lovasoa]

dezoomify-rs now supports google arts and culture, and it can download images at even the largest zoom levels.