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Welcome, you can also just right click on a photo (make sure its not bigger that 600x600) copy and paste right into the box without using the editor. That's how people do it on comments where you see pics, to make sure it sticks click the raw html you should see it in the preview. Here is one of my posts for your upvoting pleasure _theres an ass hat running a bot downvoting every post that comes up. Follow the post to my page, there's lots more info on one of my posts with an error message about pics Blessed Be
https://steemit.com/steem/@kalaylah77/isaac-asimov-how-do-we-stop-a-habitual-downvoter-he-obviously-is-being-paid-to-push-worthy-content-to-the-back-so-certain-posts

www.steemimg.com

Then copy the top code on the "embed code" tab and paste it in the text area on your post

should you have more questions join our MinnowsUnite Group on Gli.ph(130+ Steemers Strong!)
https://gli.ph/g/mT205P/CbFybHevfa12pvgQqtZgt50coGG6ZTyxDzDyWSXQJ7s=

Something to consider is where your images are hosted. I've seen Facebook images and dropbox-hosted images which will not load here. I use imgur.com and have yet to have a problem.
@cryptohustlin 's suggestion is of course a good one.

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