Image blurring on export

[dnviti]

Hi! I'm an IT Technician on OMA SPA.
We are very excited about using your editor to build an important project, but we are experiencing a lot of problems with raster images (png mostly) because they remain very blurred after export... Is there any way to fix this?
You'll find the self explanatory images below so you can easly notice the differences between original and exported:
Original Image

Imported and then exported with draw.io

[davidjgraph]

How does any of this relate to draw.io?

[dnviti]

The original image is very sharp, but when imported into draw.io and exported in png it becomes very blurry. Is it some kind of compression that draw.io makes?

[davidjgraph]

Ah, OK. Yes, draw.io compresses larger images by default. Hold shift whilst dragging and dropping the image onto the canvas.

[davidjgraph]

Override EditorUi.prototype.resampleThreshold and
EditorUi.prototype.maxImageBytes if you want to change it programmatically.

[dnviti]

@davidjgraph I changed the two parameters you suggested. The problem is resolved when importing, but when exporting the image is still compressed and then blurred.
I'm testing it in a custom environment using the embedding API.
Here's an example: https://goo.gl/OVgEWa (need to use SHIFT+DRAG here)
In my real working environment there is my server address instead of "https://www.draw.io/".

The thing is: if you download the original image (the one you see when you first open the page), then you open the editor by clicking on it, if on the blank editor page you'll drag-drop the original image and then you'll click on save, you'll see that the image EXPORTED BY THE EDITOR is A LOT smaller than the original one. Can i resolve that issue? It is VERY important for my company to resolve this issue!