I was always using Flicker to upload the photos and picture to be used in my blog entries. Flicker is a very good platform to share the photos, very easy to use. There was a embed function, but I didn't use the embed code, just copy out the image address and use it directly in my blog entry. If Flicker start to charge, I guess I cannot enjoy the free service from Flicker anymore and need think about other ways, as I have used more than 90% of the quota.
So far I found Googld drive cannot work, Facebook can work but I tend not to use Facebook as Facebook is a social media platform, may not be suitable to use it as blog entry photo link source.
I have found this link How to directly link or embed Dropbox images to use Dropbox as the blog entry photo link, take recent blog entry Online BMC(Bloomberg Market Concepts) study at NUS CAMRI lab as example,
The photo sharing link is: https://www.dropbox.com/s/x1l9ajisspix6zw/BMC%20Certificate.jpg?dl=0
If I use this link as photo source link, the outcome is as below, as Dropbox “public links” are not direct links to the image file itself, but rather to an interstitial page that frames the image and gives you options for downloading the file, etc. Not be able to be embedded.
If I change the photo link as suggested by How to directly link or embed Dropbox images, change ?dl=0 to ?raw=1 at the end of the URL, it can be embedded.
The outcome is as below, it works.