ASCIIShop

Click a location on the grid then click a character from the selection sidebar and it'll place the character there

When you place a character, it also adds it to the top of the selection sidebar to make it easier to find next time

The "w", "d", "a", and "s" keys move the selected spot on the grid up, down, left, and right, respectively

Using Shift+click selects a box starting at the initial cursor position and extending to the new location

Command+Click on a mac selects multiple individual characters (I'm don't yet know what the key is on other operating systems)

Command+Clicking an already selected tile doesn't currently un-select it

The "f" key removes the character from currently selected locations

Multiple layers are supported

Characters on the currently selected layer are gold. Characters on layers above and below the selected layer are green.

The highest layer the contains a character for any give location shows that character (i.e. none of the ones below it are visible for that location)

Switching between layers is done with the "L#" buttons in the layers palette

The checkbox in the layers area determines which layers are visible

The currently active layer is highlighted with the red bar

The "S" button in the layers area will "solo" a layer showing just it. (It's not currently a toggle so soloing a layer means turning others back on manually)

To move a block of character, select them with Shift+Click the press Option+w, Option+a, Option+s, or Option+d to move them the corresponding direction. (The key is Option on mac. I'm not yet sure what it is on other operating systems)

Option click (on mac or whatever that is on your OS) + w,a,s,d to move the selected

Saving a file creates a JSON file that can be loaded back in.

To get the text, copy the content from the output area

Note: if you refresh the page, the content currently resets. Make sure you save off a copy of the JSON first