Thanks.  I just liked the instant preview on the url above.

kenn_b

I mostly preview it where I'm posting it. Quick test:

# this is a title

## here's a subtitle

### here's a sub-subtitle

```
a = 1  #some code
b = 2
```

[a link](http://example.com)

_italics_

**bold**

1. test
1. test2
1. test3

yep, does about all I'd want

OriginalSize

I will piggyback on your post and ask does SN markdown support html, Mermaid? I guess markdown supports html by default?

siggy47

bitcoin

Since SN uses markdown, I am getting better at it, but still do not remember all the syntax, so was searching for a good markdown editor and found this one below. It is quite easy to use, you see the preview right away and by default you already have a template. 

https://stackedit.io/app#

Is there anything better out there?