>>1444669try toggling your tab settings in Firefox. default it opens a new tab. right click>customize and drag the new tab "+" next to the tab. it might not show right the first time you try and drag it over, keep moving it. it might look different depending where you put it, not sure how to keep it as just the "+" - probably something with the css or an extension. you could also just restore to default and it should put it back on the end.
>>1444676yeah, you need to save them as jpg and try and keep it the same resolution as your monitor. you can get help in the IMT thread if you need something specific.