I'd like to ask a question on one of the sites, but it would require me to upload a few photos taken at different angles for a better chance of someone knowing what it is. Is there a tool that I can use with my screen reader that will allow me to add images? Is there an extra feature I need to look for? Do I need to use an img src HTML tag with a link to my web server where the pictures are?
If there is a tool, how can I find it with my screen reader so that I can utilize it?
Stack Exchange hosts its own images at i.sstatic.net, which has a massive benefit over most other hosting sites because the images posted there never rot. For this reason, images in questions and answers should be uploaded via the special uploader.
I can't help you with your screenreader, but I do know how to upload images with only a keyboard.
There are two ways: from a URL and from your clipboard.
For either of these methods, you first need to open the image upload popup with ctrl g.
To upload from a URL, make sure you have the URL in your clipboard and press tab, then press enter, and then paste your URL from your clipboard with ctrl v. Lastly, hit enter to submit.
To upload from your clipboard, you will need to first have the actual image in your clipboard (if your image is on your computer, you can just copy it with ctrl c from the file explorer). Then you'll need to paste the image into the uploader with ctrl v, and submit it with enter.
If you're successful, you will have markdown like this in your post, although these two lines may not be adjacent:
[![enter image description here][1]][1]
[1]: https://i.sstatic.net/mvuHz.png
(You should probably replace "enter image description here" with a description of the image.)
If you don't get it right, you can hit escape to exit the uploader popup, then start over by bringing the popup up again with ctrl g.
If your image fails to upload, an error will be displayed, but it's plain text, so hopefully you'll know it's there.
Upload at your own risk. If you upload the wrong image, it will still be accessible via a URL unless you contact Stack Exchange (via the "contact us" link), and someone have to get it removed.
I said that images should be posted via the special i.sstatic uploader, but this doesn't mean that you have to do it. If it's easier, you can always host the image elsewhere and link to it in your post. Then, somewhere in your post, ask for help uploading the image. (You could say something like "I'm blind and I can't find the uploader. Can someone upload this image for me?")
Then, someone (really anyone) can upload the image for you.
If you have any questions (or if anything is unclear), feel free to ask.
In theory, you could "just" use markdown pairing the markdown the image upload tool generates with a simple link under the text like so. Note the new line
[![random image I had lying around - image of dog, black and brown, medium large sized and fluffy][1]][1]
[1]:https://i.sstatic.net/82a0H2rT.jpg
The link dosen't necessarily need to be in imgur, or stack's instance of it. That said, we seriously prefer stack's upload tool and their private instance of imgur so we know the image will be backed up and available, and some hosts have suddenly decided to break images, so perhaps noting that its off site hosting, perhaps in a comment might be nice.
<img src="https://nvda-project.org" />for images but then you have to host the images your self.