i just found out tumblr was storing over three GIGABYTES of cookies on my device without me knowing and that's why it's been running so fucking slow recently... incredible. anyways everyone go clear your fucking cookies. don't let this website run a goddamn video game's worth of disc space in the background for no good reason.
on firefox: settings → search "cookies" → scroll down → "manage cookies" → tumblr should be at the very top because of how much space it's taking → select it → clear cookies → save changes. done