[runjake]

In this case, itt's easier to just run it locally: https://github.com/invisal/sqlite-internal

But you can get sort of what you want by:

1. Loading a site.

2. Go into the Web Dev Tools.

3. Select the Network tab.

4. Click on the "No Throttling" dropdown and check "Offline".

5. You should now see a yellow warning icon in your Network tab and it should prevent all network access. If you reload the tab you should get the "No Internet Connection" error page.

[creatonez]

What a fantastic method, I'm gonna start using this for all the random tools I upload data to expecting they are fully clientside.