Images of limited size are allowed to be uploaded, below your message there is a link to "Choose File" and "Upload". If your image is too large it will be resized smaller and it may not be suitable for censuses etc.
The easiest way to share a larger image is still using https://imgur.com/ so having uploaded an image there, just RIGHT click on it and choose "Copy Image Address".
Then come back here to your post and use Ctrl V which will paste your link.
For those who want to view the image the easiest way is to hold mouse over the link and press your wheelie mouse which will open it up in a new tab and keep the message in the original one for you to go back to, alternatively RIGHT click and "Open in new tab"