sqanything lets you query HTML tables in your open Chrome tabs with SQL. You can also query tables in Notion, CSVs, Excel, and Google Sheets. You can send the results of your query to Google Sheets or just send all the tables on a web page to Google Sheets. e.g. if you had 20 different HTML tables open in various tabs you can extract them all to Sheets with one click.
A lot of the heavy lifting is done by AlaSQL [0] and we used this [1] boilerplate to get started.
0 - http://alasql.org/
1 - https://github.com/adambullmer/vue-cli-plugin-browser-extens...