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ROBLOX THUMBNAIL DIMENSIONS

Roblox Thumbnail Size: 1920 × 1080 at 16:9

Use a 16:9 canvas and export at 1920 × 1080 pixels for the ideal Roblox thumbnail resolution. Check the format, file size, crop, and lower safe area before uploading.

Create a 1920 × 1080 ThumbnailOpen the Upload Checklist

Updated . Platform guidance can change, so verify the official source before publishing.

QUICK ANSWER

Aspect ratio
16:9
Ideal size
1920 × 1080

Roblox warns that uploaded thumbnails with another aspect ratio are displayed at 16:9, which can stretch the image.

OFFICIAL SPECIFICATION

The recommended ratio and ideal resolution

Roblox's Creator Hub says a thumbnail image should use a 16:9 aspect ratio and should ideally be 1920 × 1080 pixels so it displays at high resolution across the Roblox site and app.

That wording matters: 16:9 is the recommended shape, while 1920 × 1080 is the ideal resolution. Smaller 16:9 images have the right shape but may look softer on large or high-density displays.

Roblox Creator Hub: Thumbnails is the primary source for the current dimensions, supported formats, personalization upload instructions, and safe-area guidance.

UPLOAD CHECKLIST

Five checks before you upload a Roblox thumbnail

Run these checks on the final exported file, not just the editable canvas.

  1. 01

    Canvas

    Use a 16:9 canvas. The ideal documented resolution is 1920 × 1080 pixels.

  2. 02

    Format

    Export as JPG, GIF, PNG, TGA, or BMP. PNG and JPG are the most practical choices for a static thumbnail.

  3. 03

    File size

    For Home thumbnail personalization uploads, keep each image under the currently documented 3 MB limit.

  4. 04

    Safe area

    Keep essential faces, rewards, labels, and other key details away from the bottom edge, where interface metadata may cover them.

  5. 05

    Accuracy

    Make sure the thumbnail represents real content from the experience and passes your own final review before moderation.

SUPPORTED FORMATS

JPG, GIF, PNG, TGA, and BMP

Roblox currently lists all five formats for thumbnail images. For a typical static thumbnail workflow, PNG is useful for crisp artwork and text, while JPG can produce a smaller file when the image contains complex gradients or painted detail.

THE 3 MB RULE

Apply the limit to the documented upload flow

Roblox's current instructions say to keep images under 3 MB when uploading thumbnails for Home thumbnail personalization. This page does not present 3 MB as a universal limit for every thumbnail surface. Check the live Creator Hub instructions for the exact workflow you are using.

FROM SIZE TO CREATIVE

Start with the right canvas, then make the idea readable

Dimensions prevent stretching, but they do not make a thumbnail effective by themselves. Keep one clear focal point, preserve truthful game details, and check the composition at a small card size.

ClickCrit's Roblox Thumbnail Maker turns one permitted game reference into four distinct concepts, then lets you edit and export the strongest direction at 1920 × 1080.

Create My Thumbnail Pack

FAQ

Roblox thumbnail size questions

What size should a Roblox thumbnail be?

Roblox recommends a 16:9 image and identifies 1920 × 1080 pixels as the ideal resolution for high-resolution display across its site and app.

What image formats does Roblox accept for thumbnails?

Roblox lists JPG, GIF, PNG, TGA, and BMP as supported thumbnail image formats.

Does every Roblox thumbnail have a 3 MB file limit?

The current Roblox documentation specifically says to keep images under 3 MB when uploading thumbnails for Home thumbnail personalization. Recheck the live Creator Hub guidance before publishing because requirements can change.

What happens if the image is not 16:9?

Roblox says displayed thumbnails are stretched to 16:9 regardless of the uploaded aspect ratio, so exporting at 16:9 avoids visible distortion.