Make the achievement readable
Choose one clear symbol with enough contrast to work at small sizes. Keep text short and away from the edge. Compare the circular preview and full square before exporting.
Export the right source image
Roblox’s badge guide recommends a 512×512 template and notes the circular crop. This editor exports a square 512×512 PNG; the guide and checkerboard are preview layers. Small source artwork may look soft after enlargement. PNG transparency is retained.
Create and award the badge
Upload the exported PNG in the badge creation form for the intended experience. Inspect Roblox’s resulting crop. Follow the badge creation and server-award guide to record the badge ID and test the award path.
Image processing happens locally in this browser. File limits are 8 MB and 8192 pixels on either side. This tool prepares the image; creation, moderation, and badge awards happen in Roblox.