Under the hood its a small Flask service with a React front-end (particularly react-virtualized & chart.js) which can be instantiated by passing it a Pandas data structure. It can handle datasets of any size (as long as the data fits in your RAM) by only loading & drawing what data is viewable in the dimensions of your browser. I have a demo running on PythonAnywhere:
http://andrewschonfeld.pythonanywhere.com/dtale/iframe/2
Let me know what you think?
I also have another heavier piece of data available for playing with:
http://andrewschonfeld.pythonanywhere.com/dtale/iframe/1
GitHub: https://github.com/man-group/dtale
Thanks