(Mar 12, 2020) TMHO, there is no progress with LC's HTML5 platform ("web apps") since a long time. So I stopped making new HTML5 standalones.
These browsers support the features of the experiments:
Actual Brave, Chrome, Firefox, Opera and Safari.
[The link numbers indicate the LC version that was used to generate the standalone.
Standalones generated by the same version usually load faster (from your browse's cache).]