Maybe you could use something like Tiled (https://www.mapeditor.org/) or Ogmo (https://ogmo-editor-3.github.io/). They're meant to be level editors but you can also define custom metadata for tiles. And if these tools aren't suitable I would probably write my own simple editor. Source: over 2 years ago

All of them can, you just have to write the parser yourselves. I prefer to use Ogmo. Source: about 3 years ago

Here's a map I made for part of the Wave Echo Cave from Lost Mines of Phandelver. I wanted the forge of spells to be more visually impactful and give combat there more options, so I elevated it on a platform. I also had an octagonal theme going through out the dwarves architecture. Lots of fun! (Online made on dungeonscrawl.com, then drawn over in procreate). Source: about 1 year ago

I like WorldAnvil for content management. I don't know if that would be helpful. I also use Owlbear Rodeo for actually running maps and often Dungeon Scrawl for drawing maps. I also use the chalkboard in my garage. Source: over 1 year ago

Oh ^^ here I used dungeonscrawl.com as mentioned in the title to create this neat dungeon :) maybe in february I switch to pen and paper ^^. Source: over 1 year ago

I drew the circles and the oval seperately then used it as a blue print on dungeonscrawl.com. Afterwards I redrew all the areas with different layers/masks to add seperate images (from the internet) as floors for each area. Source: over 1 year ago

For actual dungeon MAP making, I find the website https://dungeonscrawl.com/ to be the easiest, and best to use and it’s 100% free. It also works well to hand to the players so they can map out the dungeon as they go. Source: almost 2 years ago