Roblox thumbnail maker: from real game inputs to an exportable image

Start with the game, not a generic prompt

Import a public Roblox Avatar by username. For a game, paste its complete Roblox URL, Place ID, or Universe ID. You can review the returned game name, description, creator, and cover before using them in one of six starting compositions. You can also upload images that you own or are permitted to use.

Generate four directions from approved references

Reference-guided generation is optional. The automatic generation service uses the confirmed game brief and up to eight enabled references to create four distinct directions for comparison. The service chooses its processing route automatically. Only the selected inputs and bounded instruction are sent through the application server to its configured third-party AI processor.

A four-direction run costs 4 credits. New Take and one-change Refine cost 1 credit each; local editing, checking, and export cost 0 credits.

Finish the thumbnail in the 2D editor

Choose a starting composition, frame the subject, set a background and lighting direction, add a short headline, and inspect the small feed preview. These controls composite images on a canvas. They do not turn a flat Avatar preview into a joint-level 3D rig.

Use the GLB rig only as a local experiment

The local experiment loads an authorized GLB. When it recognizes common bone names, it can adjust the head and arms, apply preset poses, and capture a transparent PNG back into the 2D thumbnail. Universal R6/R15 compatibility has not been verified.

Export, then verify the promise

Export PNG or JPG at 1920 × 1080 or 1280 × 720. Before publishing, open the downloaded file at feed size and confirm that the character, setting, text, and implied gameplay are accurate. Ro Thumbnail provides checks and reminders; the creator makes the final authenticity decision.