Please excuse me asking a basic question. 
As I understand it, to show everybody on the Internet a picture, I need to register with a Web Hosting site, send them the image from my computer and then announce the link e.g. on a message board, correct?
If so, can you recommend a free, reliable and safe Web Host?
I only want to load a handful of small images.
Thanks in advance.
Do you need the image to be up for a couple of days, or a long time? Imgur, postimages, freeimagehosting, etc claim they will store your files without an expiration date. Be aware that many of them serve up spam (kind of like this web site :P) I wouldn’t bother actually registering an account, just drag and drop.
Thanks for replying. 
I’d like it to be for a year or so.
P.S. It’s going to be a few .jpg files, if that matters.
Imgur and postimage have both been around for over a decade, seems like either one is a reasonably safe bet for another year.
Check to see if your ISP provides free webspace
I use Imgur, and have for about five years – it’s pretty straightforward, it works, and for what I need to use it for (mostly to be able to host pictures that I then share on other web sites, like here), it works very well.
I used to use Photobucket, but they stopped allowing you to embed pictures saved there on other sites without a premium subscription, and their site became bloated with bad adware.
Agree with Cugel. My ISP provides 250Mb of free hosting space. I upload html pages or anything else I want via a FTP client (Filezilla). Once you get the hang of uploading it’s a breeze.
Once again: free and the pages will stay up as long as I’m a customer.
I’ve been doing well with https://postimages.org/.
Free and easy to use.
If you use this one and are loading more than 20 pics, make sure you Create Galleries as you go. These act as different folders for easy sorting.
I’ll just note that, years ago, I did this with my ISP (Comcast), which worked just fine, until Comcast decided that they no longer wanted to offer that hosting space to subscribers.
There’s always the chance that any remote/third-party hosting solution can go out of business, or decide to stop offering said hosting.
If you don’t register with imgur, you can still upload, but you’ll have to make a note of the URL you get otherwise you’ll almost certainly never find the picture again. I have thousands of pictures there and haven’t had any spam issues that I know of.
We all thought photobucket was a safe bet as well. Then they stopped allowing hotlinking, added in some other restrictions and to top it all off, wouldn’t allow you to batch download all your pictures. Downloading hundreds or thousands of pictures one by one was excruciating. For a hostage payment of $400 per year, you could unlock these features.
I know they stated they simply couldn’t afford to do all these things with what they were bringing in, but there must have been a better way. With so many other (free) image hosting services, at least to me, it seemed like they were purposely attempting to drive people away. It’s what led me to find imgur.
I made good use of PhotoBucket, but I always had a backup on local media in my house. So when they started playing hostage games it was only an inconvenience and not anything too dreadful.
Mostly it affected old game threads in my case.
I recommend imgbb for ease of use.