Quick-fire questions

Should I save my photos in JPEG or HEIC format?

> HEIC wasn’t supported until High Sierra, but delivers more efficient compression at each level of quality. For images only accessed by Macs and Apple devices, it’s preferred and usually the first choice for iOS cameras. JPEG is more universal, and supported elsewhere, on websites and social media.

How to eliminate promoted tweets from Twitter?

> Although the Twitter app is popular and supports new features, many prefer thirdparty alternatives like Tweetbot and Twitterific, both available from the App Store. These work slightly differently so can have a slight time-lag, particularly with DMs, but you only get to see the tweets of those you follow, with no promotions at all.