The free Roblox thumbnail maker: compose three 1920×1080 layouts from PNG, JPEG, or WebP artwork, preview a bottom-edge placement reminder, and export PNG or JPEG only under 3 MB.
Last updated:
Local browser processing • no upload required
Local browser processing • no upload required
Step into Sanctum Vale — our standalone 2D pixel exploration and building game. Gather wood & stone, build your shelter, cultivate crops, and challenge elemental guardians directly in your browser.
Sanctum Vale · 5 Playable Regions · Single-Player
HOW IT WORKS
Quick answer
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.
Key specifications
Sources
FAQ
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.
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.
The tool blocks the download because the encoded file must be strictly under 3 MB. Change the format or composition and measure it again.
No. You can compose and export the thumbnail without signing up.