What you can copy after upload
The result list gives a one-click copy for three embed formats. Each one uses the URL of that upload. Replace the description in the examples below with text that actually describes your image; the copy button uses the file name as a starting point.
HTML: <img src="https://example.com/image.png" alt="Example image" />
Markdown: 
BBCode: [img]https://example.com/image.png[/img]
HTML is for a webpage or an editor that accepts an img tag. Markdown is for GitHub README files and other Markdown editors. BBCode is only for forums that support an img tag. A plain URL belongs in a field that asks for an image address, not inside a page that expects markup.
HTML image link versus a clickable text link
An img tag displays the picture. An a tag displays text or wraps the picture so it can be clicked. If you need the image itself on the page, copy the HTML image tag. If you also need the image to link somewhere, put the img tag inside an anchor in your own editor and set the href to the page you want.
The src value must be the direct image URL. Pasting the preview page address into src loads a webpage, not the image file. Write alt text that says what the image shows; the file name is only a placeholder.
When the image does not appear
Open the direct URL in a new tab first. If the file does not load there, the upload may not have finished or the address was copied only in part. If it loads in the browser but not in your page, check the editor.
A Markdown editor will not render an HTML img tag unless it allows raw HTML. A forum will not render BBCode unless it supports that syntax. An HTTPS page can block an image whose URL is not HTTPS. The addresses from this uploader use HTTPS.
Several images
You can select up to 10 files in one batch, with 100 MiB of original data in total. Each successful image gets its own copy buttons. The batch actions can also copy a newline-separated list of direct URLs or Markdown snippets. Failed files are left out until they succeed.
Public embeds
An HTML snippet does not hide the image. Anyone who can see the src URL can request the file. Do not embed identity documents, private screenshots, or other confidential pictures. Continued availability is not guaranteed, so keep the original file if the page still needs it later.