What a Roblox thumbnail has to say
Roblox is not one game. It is thousands of them: obstacle courses, horror maps, tycoons, simulators, pet games, roleplay towns. A viewer scrolling past your video first needs to know which of those it is, then what happens in it. The thumbnail has about one second to answer both.
That is why the best Roblox thumbnails lead with one clear idea. A giant finished base says "tycoon". A ban hammer says "admin". A dark corridor says "horror". A thousand noobs on a baseplate says "challenge". Get that shape right and the viewer understands the video before reading a single word.
Your avatar is the face of the video
Roblox avatars have simple faces, which is a problem at small sizes: a slight smile or a small frown disappears. Exaggerate everything. Open the mouth wide, widen the eyes, add a sweat drop, and let the body act: arms up for a win, hands on the head for a fail, running for horror. Show one avatar, large, rather than a crowd of small ones. If you film yourself, a face-cam in a top corner adds a real reaction next to the avatar's.
If your channel uses the same avatar in every video, keep its outfit and colours consistent. Returning viewers learn to spot it in a feed. The examples on this page are generated with Base.Tube to show what a Roblox thumbnail can look like; they use the game's look and avatars, and the face-cams show invented people.
Colour by genre
Each kind of Roblox video has a colour that viewers already read correctly:
- Obbies, tycoons and challenges: bright sky blue with saturated platforms and the green baseplate. Red is danger, green is an upgrade.
- Horror: deep navy and black, with one light source on the avatar. In a feed full of bright thumbnails, darkness stands out on its own.
- Pets, limited items and events: purple, pink or icy gradients with a gold or rainbow glow on the item.
- Roleplay: warm, sunny colours that make the scene feel like a story.
Pick one accent colour and keep the rest calm.
Text: two words beat five
Roblox viewers skew young, and many watch on phones and tablets. Long titles inside the image become noise. Use one to three words in capitals, in a heavy rounded font with a thick outline: "DAY 100", "BANNED?", "RUN!". For fonts that stay readable at this size, see the YouTube thumbnail fonts guide.
Backgrounds that show the genre and then get out of the way
The background should name the genre and nothing more. Simplify it, blur it, or darken it so the avatar and the text come first. For ready-made ideas, see the YouTube thumbnail backgrounds guide.
Roblox game thumbnails and icons are a different job
Many people searching "roblox thumbnail" are making the images for their own Roblox game, not for a YouTube video. The rules on Roblox are different:
- Game thumbnails: 16:9, ideally 1920 × 1080 pixels, in .jpg, .gif, .png, .tga or .bmp. You can add up to 10 images or videos per game. Roblox stretches images that are not 16:9.
- Game icon: a separate square image, at least 512 × 512 pixels. It is often shown much smaller, so it must stay clear at about 150 × 150 pixels.
- What Roblox asks for: images that honestly show what players will experience, text used sparingly, and nothing essential at the bottom of the image, where the player count can cover it. Every upload is moderated.
These figures come from the Roblox Creator Hub documentation; check it again before you upload, as Roblox can change them.
Size and checks for YouTube
For YouTube, upload at 1280 × 720 pixels (16:9). For the current file size and format limits, see the YouTube thumbnail size guide. Then put your thumbnail next to other videos in the YouTube thumbnail preview and compare versions side by side with the thumbnail tester. No tool can tell you in advance how many people will click. The real answer comes from YouTube once the video is live.
