Align to grid with a hex map?

ok folks, so how is this done ?  or is it just change map till you get it correct?  im trying to get Mystara into roll 20 id love any help you all can give thanks!

I only understood hex grid maps after using&nbsp; <a href="https://marketplace.roll20.net/browse/set/2368/hex-march-vol-1-world-map-builder" rel="nofollow">https://marketplace.roll20.net/browse/set/2368/hex-march-vol-1-world-map-builder</a>&nbsp; Hex gridded maps do not align to the hex grid, but to the bounding box of the grid. So a 75 pixel hex grid is effected with a 95/96 pixel rectangular grid, of which every even row is transposed halve a rectangle and overlaps with the odd rows.&nbsp;

This post explains it much better <a href="https://app.roll20.net/forum/post/4365737/hex-grid-map-layer-assets-scale-in-unexpected-ways-on-hex-maps/?pageforid=4367221#post-4367221" rel="nofollow">https://app.roll20.net/forum/post/4365737/hex-grid-map-layer-assets-scale-in-unexpected-ways-on-hex-maps/?pageforid=4367221#post-4367221</a>

Probably wrong forum for this, no? It's kind of a PITA, but you have to just change the roll20 hex size until it matches in one dimension and then set the image dimensions until it matches in both dimensions.&nbsp; The hexes seem to be not quite symmetrical, so you end up having to squash the image a bit, but it shouldn't be noticeable.&nbsp; For example, I have a map that is&nbsp;1826 x 3933 with a 30px hex grid (created using GIMP's mosaic tool).&nbsp; After aligning it, I ended up with a roll20 hex size of 26.2 and image dimensions of&nbsp; 1830 x 3912.