How to Make a Roblox Thumbnail That Survives the 3 MB Limit
Frame one action, protect the lower safe area, test small, and compare PNG or JPEG output.
01
What size does the Roblox thumbnail maker export?
The free Roblox thumbnail maker: compose 1920×1080 game thumbnails from PNG or JPEG art, check mobile safe zones, and export optimized files under 3 MB with no sign up.
- Add PNG, JPEG, or WebP artwork and enter the kicker, title, and subtitle for the 1920×1080 canvas.
- Compare Cinematic, Split Panel, and Centered Title layouts, then adjust fit, scale, offsets, colors, type size, and the preview-only bottom-edge reminder.
- Choose PNG or JPEG. The tool measures the encoded file and permits download only when it is strictly under 3 MB. The bottom-edge reminder remains a preview aid and is not part of the composed thumbnail.
02
What size does the Roblox thumbnail maker export?
The tool encodes a 1920×1080, 16:9 PNG or JPEG and allows the download only when the actual encoded file is under 3 MB.
03
What image formats can I add?
You can use PNG, JPEG, or WebP artwork as the source layer for the thumbnail.
Roblox may overlay experience metadata across the bottom in some placements. The actual covered area varies by placement, so no single boundary is guaranteed. Keep the main title and subject away from the bottom edge; the preview reminder is not exported.
04
What happens when the file reaches 3 MB?
The tool blocks the download because the encoded file must be strictly under 3 MB. Change the format or composition and measure it again.
05
Does the thumbnail maker require an account?
No. You can compose and export the thumbnail without signing up.
Continue with these tools
Plan the outline, choose blocks, or turn artwork into a buildable pixel reference without leaving your browser.
Quick answer
What size does the Roblox thumbnail maker export?
The tool encodes a 1920×1080, 16:9 PNG or JPEG and allows the download only when the actual encoded file is under 3 MB.
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FAQ
Frequently asked questions
What size does the Roblox thumbnail maker export?
The tool encodes a 1920×1080, 16:9 PNG or JPEG and allows the download only when the actual encoded file is under 3 MB.
What image formats can I add?
You can use PNG, JPEG, or WebP artwork as the source layer for the thumbnail.
Why should important content stay away from the bottom edge?
Roblox may overlay experience metadata across the bottom in some placements. The actual covered area varies by placement, so no single boundary is guaranteed. Keep the main title and subject away from the bottom edge; the preview reminder is not exported.
What happens when the file reaches 3 MB?
The tool blocks the download because the encoded file must be strictly under 3 MB. Change the format or composition and measure it again.