On most browsers, you should be able to just drag an image file from a Finder/Windows Explorer window into the text editing field in your browser, and the web site will automatically upload the image for you and place the Markup code for it into the text field.
On most browsers, you should be able to just drag an image file from a Finder/Windows Explorer window into the text editing field in your browser, and the web site will automatically upload the image for you and place the Markup code for it into the text field.