If you want to tag people on Twitter but are worried about the character count, 👆🏼 might work. You can tag up to 10 people on the image. However, their settings should allow people to tag them in images. If a person has disallowed it, you won’t be able to tag them in the image.
Take a call on how important it is for you to tag that person. You always have the option to tag them as a part of your tweet.
If you have any questions, feel free to ask.
Have a socially profitable day. 🙂