Is there any memory limit for Dynamic Web TWAIN?

Since version 10.1, Dynamic Web TWAIN introduced a new mechanism called local caching. Two properties are available:

// enable local caching mechanism. Default value is True.
DWObject.IfAllowLocalCache = true;

// using 800MB of browser memory by default. When the size of scanned image data exceeds 800MB
// extra data will be encrypted and cached to the local file disk.
DWObject.BufferMemoryLimit = 800; 

That's to say, from version 10.1,  Dynamic Web TWAIN is able to hold thousands of pages of images.