Roblox Thumbnail Maker
Describe the scene you want and GameDevGenie paints 16:9 key art for your Roblox experience. Add your game title in a bold style, drop on an UPDATE 2.0 or NEW EVENT badge, check the safe area, and download a 1920×1080 JPG under Roblox’s 3 MB limit, ready to upload to the Creator Hub. Use it as a Roblox thumbnail creator for new experiences, updates and events — the same art also works as a starting point for Steam, itch.io and YouTube.
How to Make a Roblox Thumbnail
- 1
Describe the scene
Write what should happen in the picture, or start from a genre preset: Action & Combat, Open World, Simulator & Tycoon, Horror & Survival, PvP & Racing or Fantasy RPG.
- 2
Pick a model and generate
Fast models cost from 2 credits; higher-quality models cost more and show their price on the button. The image is generated in 16:9 so nothing gets stretched.
- 3
Add your title and a badge
Type your game name and choose Gold, Cyber Neon or Crimson Fire lettering, then add a badge such as UPDATE 2.0, NEW EVENT, NEW MAP or SEASON 2. The title sits in the upper part of the image; the safe-area guide shows the strip at the bottom that Roblox can cover.
- 4
Download and upload
Download a 1920×1080 JPG with the title and badge drawn in, then add it to your experience in the Roblox Creator Hub.
Built for Roblox Game Thumbnails
Genre presets
Prompt helpers for simulators, tycoons, obbies, horror, PvP and RPG games give you a strong starting scene in one click.
Title and badge overlays
Three title styles and four badges, previewed live and baked into the exported image.
Exact Roblox size
Art is generated in 16:9 and exported at exactly 1920×1080, the size Roblox recommends for thumbnails.
Several AI models
Choose between fast models such as FLUX.2 and Z-Image and premium models such as Nano Banana when you need more detail.
Roblox Thumbnail Size
Roblox experience thumbnails are 1920×1080 pixels, a 16:9 image. GameDevGenie generates the art in 16:9 and exports exactly 1920×1080, so you can upload it without cropping or black bars.
Thumbnails are shown at many sizes — on the game page, in sorts and on phones — so keep the title large and the main character near the centre. Roblox can cover the bottom of a thumbnail with details such as the player count, so the title goes in the upper part of the image; the safe-area guide marks the bottom strip to keep clear.
Roblox accepts thumbnail images under 3 MB. A detailed 1920×1080 PNG often goes over that, so GameDevGenie downloads a high-quality JPG that stays under the limit.
How to Change Your Roblox Game Thumbnail
Open the Roblox Creator Hub, choose your experience and go to its thumbnail settings. Upload the 1920×1080 JPG from GameDevGenie — you can add several thumbnails and arrange their order — and save.
Changing thumbnails for an update or event is a quick way to show players something new: generate a fresh scene, add an UPDATE or NEW EVENT badge, and swap it in.
Thumbnails for Steam and Other Stores
The same 16:9 key art is a good base for Steam capsules, itch.io covers and YouTube thumbnails. Store capsules use their own sizes, so crop the 1920×1080 export to the dimensions each store asks for.
What You Get
- 1920×1080 JPG (under 3 MB) with your title and badge
- 16:9 artwork at the model’s size (for example 1024×576)
- Commercial use of the image
Roblox Thumbnail Maker FAQ
Is the Roblox thumbnail maker free?
Every account gets free daily credits. A thumbnail costs from 2 credits with the fastest model; higher-quality models cost more. Adding the title and badge and downloading the image are free.
What size is a Roblox thumbnail?
1920×1080 pixels, a 16:9 image. GameDevGenie exports exactly that size.
How do I change my Roblox game thumbnail?
Download the 1920×1080 JPG, open your experience in the Roblox Creator Hub, and upload it in the thumbnail settings. You can keep several thumbnails and change their order.
Can I put my game’s name on the thumbnail?
Yes. Type the title, pick a style (Gold, Cyber Neon or Crimson Fire) and it is drawn into the downloaded image, in the upper part where Roblox does not cover it, together with the badge you choose.
Can I use the thumbnails commercially?
Yes. You own the images you generate and can use them for your games and store pages, subject to our Terms of Service.
How do I make the square game icon?
Game icons are square, so they have their own tool: the Roblox Game Icon Maker.
Roblox Thumbnail Maker
Make a Roblox thumbnail →More Roblox Guides
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