Hi,
a while back I wrote a free Streamlit Webapp to visualize, analyze and compare sort portfolios from the Kenneth R. French Database. No worries: No monetization, ads or other intents beyond factor research interests. Just thought that if you ever want to check the historic performance of certain (regional) factor/size or industry (double) sort portfolios, this might be useful to you.
Database currently includes up to 100 years of monthly factor data until end of 2024.
It's not pretty (I am no trained programmer) and I wrote it primarily for myself (quick checks of historic precedences) but if you want to check it out, enjoy!
WARNING: If Portfolio123 is a flaming sword, this tool is a random stick I found on the ground in comparison. 
PS: It's not optimized for mobile, so prefer using it in your desktop browser.
