Build the shape. Paint the flag. Write the sign.
Four small editors that run entirely in this browser tab. Nothing is uploaded, nothing is installed, and no game files are needed until you export.
Pick a tool
Every editor writes a file you can drop into a mod or the game folder. The page tells you which one.
Circle & ellipse generator
Lay out circles and ellipses from 1x1 blocks and 1x1 to 1x4 wedges. Drag the handles, tune the block weight and watch the piece list update.
Flag editor
Paint a 64x32 flag, import an image with nearest-neighbour resampling and write it over one of the 162 flags of the game atlas.
Sign editor
Design a sign of up to 100x100 blocks from 9x9 tiles, with optional indicator lights, and export it as a vehicle XML.
Line transplant
Take the roads and lines of one map tile and paste them onto another. Both tiles are shown next to each other before you export the merged .bin.
Your files stay in the tab
The editors use the File API and a canvas. No image, mesh or map file is sent to this server. The only thing the site does is deliver the HTML, CSS and JavaScript.
Bring your own atlas
The flag editor needs the flags.png from your own Stormworks installation to keep the flags you did not paint. It asks for that file and never ships it with the site.
Toolbox adapted from Stormworks-Tools-Online by lganic, MIT licensed. Licence