[xiconfjs]

I did something like this with firefox, but after a while firefox was using so much RAM, it took him 10-20 sec. for a single request - I gathered ~40000 history entries with this technique. Perhaps Chrome DevTools will do a better job - I'll try.

[fiatjaf]

Ok, you have too many history entries. That will be a problem everywhere. Perhaps removing CSS, media and images from the DOM will reduce memory consumption and get your farther?