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Hi, Version 2 of the iipmooviewer also works with static dzi/deepzoom see under protocols in the readme): https://github.com/ruven/iipmooviewer. It also has some support for annotations & "image blending" which may cover your layering use-case. Eoghan On 26 Jul 2014 07:58, "Toke Eskildsen" <[log in to unmask]> wrote: > Code for Libraries [[log in to unmask]] On Behalf Of Jonathan > Rochkind [[log in to unmask]] wrote: > > > Then I eventually found OpenSeadragon, which a couple other people in > this thread > > suggested, which looks like a pretty good fit. It looks like it possibly > can work with > > entirely pre-rendered tiles served statically with no image server, > using the "DZI" format. > > (http://openseadragon.github.io/examples/tilesource-dzi/). I haven't > actually gotten to > > a proof of concept here, but I think it'll work. > > That is what we use for a tool for ad-hoc QA of scanned newspapers: > https://github.com/tokee/quack (does not require ALTO-files, just > images). It works very well and fairly simple for a few thousands of > images, but scaling to millions would probably be problematic due to the > amount of very small files on the file system making backup and similar > operations very heavy. We are planning to use OpenSeadragon in production, > where the image backend will be pyramidal TIFFs wrapped in an image server. > > We do not use annotations but do use overlays. Multiple layers is > simulated by placing a large transparent PNG as an overlay, but that is > heavy to render for the browser on 30MP+ pixel images, making zoom somewhat > choppy. I would not attempt it on 100MP+. > > - Toke Eskildsen >