ETF Diversification Helper

With publicly available information tools about ETF investment I was struggling to visualise where my ETF composition was actually distributed - the constituent holdings, the economic zones, and the sectors. My portfolio accounts themselves are egregiously poor in information. They give me a development history, that's it. Justetf allows me to save a virtual portfolio, but only with a user account, and it isn't really focused on the diversification aspect.

Therefore I created a tool to visualise all of this information, with the question in mind: Where is my portfolio now in terms of distribution? And where could it go? So a key information for me is a before/after comparison to any virtual change - sale or acquisition - to enable me to make well-informed decision on where a change in either direction, especially buying a different, new ETF, would put the risks.

The tool is available here:

This is a privacy focused tool, nothing is stored on the server, everything stays in your browser. You can create a virtual portfolio from a selection of ETFs from four major issuers - maybe more will be added, later. All the data comes from publicly available sources published by Blackrock (iShares), Amundi, DWS(Xtrackers) and BNP Paribas. The data scrapers respected all restrictions on automated data harvesting, which is why some data sets are less complete than others.