Hello,
Let me introduce this plugin.
The drag'n drop mechanism of TiddlyWiki is great, but I am often annoyed to name every single image tiddler.
I always have to make an unique name of image tiddlers despite the fact that I use almost all images only once.
I've hoped long that I could embed images inside a single tiddler, and I figured out a way to do that.
Technically, it's simply set the base64-encoded dataURI to arbitrary field and refer it by img tag: "<img src={{!!field}}>" (After the version 5.1.16 be released, the tag string will be automatically copied to clipboard).
Please take a look at this plugin and try it.
Thank you,
Junopus