#CNostr can't load some images because the wall，if give two or more urls will same picture show many times and waste data traffic .

So can we #Nostr like HTML img tag onerror：

```

onerror="javascript:onerror = null; this.src='URLpic2.gif';"

alt="pic" />

```

#Markdown can add alt tag but rarely use，so we can use `` add a Two-Urls-Pic，Only load pic1 if pic1 can load， if fail load pic1，load pic2 at the same place.

#Nostrmo nostr:npub19yeqjawls407xjnmgkk6yss7936pcd7qzd5srlj8wye6j8433vrsjazqwk

#Damus nostr:npub1xtscya34g58tk0z605fvr788k263gsu6cy9x0mhnm87echrgufzsevkk5s

#Amethyst nostr:npub1gcxzte5zlkncx26j68ez60fzkvtkm9e0vrwdcvsjakxf9mu9qewqlfnj5z

lightning:cndx@btcdv.com 🐇ᥬ[🐕]᭄🌿