Roblox Thumbnail Maker
A Roblox game thumbnail is the 1920×1080 (16:9) image shown on your experience page and in search. BloxGFX generates click-ready thumbnails from a text prompt in seconds — no Blender, no designer. Describe the scene, characters, and mood; edit or add a reference image; then download a ready-to-upload PNG.
Updated · By the BloxGFX team — Roblox creators.
3 free credits to start · no credit card
Roblox thumbnails made with BloxGFX
How to make a thumbnail with AI
- 1Open the BloxGFX generator and pick the 16:9 thumbnail format.
- 2Describe your scene — characters, action, colors, and the vibe that makes people click.
- 3Optionally upload a reference image (your avatar, a screenshot, a style) to guide the AI.
- 4Generate, then edit with a follow-up prompt if you want changes.
- 5Download the 1920×1080 PNG and upload it to your experience on the Creator Hub.
Tips for better results
- Think about the click: bold focal character, strong contrast, and a clear hook.
- Describe emotion and action ("shocked face, glowing sword, explosion behind") — not just objects.
- Use a reference image to keep your character or brand consistent across thumbnails.
FAQ
What size is a Roblox game thumbnail?
1920×1080 pixels, a 16:9 aspect ratio, saved as PNG or JPG. BloxGFX outputs thumbnails at the correct size automatically.
Do I need Blender to make a Roblox thumbnail?
No. BloxGFX generates finished thumbnails from a text prompt, so you can skip Blender, Photoshop, and renders entirely.
Can I edit a generated thumbnail?
Yes — describe a change ("make the sky darker", "add a dragon") and BloxGFX edits the image. Each edit costs 1 credit.
Is it free?
New accounts get 3 free credits (one-time, no monthly refill) for 16:9 thumbnails. Paid plans (from $4.99/mo) add higher resolution, all formats, and more credits.
Make yours in seconds
Built by Roblox devs, for Roblox devs. No Blender, no designer.
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