hidden features of bipsi
you can have multiple browser saves in bipsi, but there's no user interface. to use another save, change the browser url to a save query parameter e.g https://kool.tools/bipsi/?save=savename. by default bipsi uses a save named slot0
bipsi supports an hd mode where tiles are 16 x 16 pixels instead of the usual 8 x 8 pixels, but there's no user interface to switch into it. there is no mechanism to switch a project between hd and not hd. to switch the editor to hd mode, change the browser url to https://kool.tools/bipsi/?hd=true. hd mode uses independent save slots
bipsi knows how to playback tiles with more than two animation frames, but the editor doesn't support them. you can manipulate the gamedata yourself to achieve this, just be aware the editor may accidentally remove extra frames