Roblox Banner Maker
Updated September 10, 2026
Renderbux is a free online Roblox banner maker. Load your real avatar by username, pose it in 3D, light it, and export a wide banner for YouTube channel art, a Discord server, or a Roblox group page — in the browser, with no Blender and no install.
Banner sizes worth knowing
- YouTube channel art — 2048×1152. Safe area is about 1546×423 in the centre. Anything outside it is cropped away on most screens.
- Discord server banner — 960×540. Profile banners are 680×240.
- Roblox group banner — 1920×1080 works. It is displayed wide and small, so keep the avatar large in frame.
How to make a Roblox banner
- Load your rig. Type your Roblox username. Your actual outfit, accessories and face load in seconds.
- Pose off-centre. A banner is a wide crop with text in it. Put your avatar to one side and leave the other clear, or remix a community pose and adjust.
- Light for a small render. A banner is displayed far smaller than a thumbnail. A hard rim light keeps the silhouette readable once it is scaled down.
- Export transparent. Then composite onto your own artwork, so the background can be built for each crop rather than fighting all of them at once.
Why a render beats a generated character
Most banner tools either generate a Roblox-looking character from a prompt or hand you a template with a text box. Neither gives you your avatar, and a channel banner is the one image where being recognisably you is the entire job. The longer version of that argument is in AI thumbnails vs real avatar renders.
Related tools
For video thumbnails rather than channel art, use the Roblox YouTube thumbnail maker. For square profile pictures, the Roblox PFP maker. Every exact dimension is collected in the Roblox thumbnail size guide, and backdrops live in GFX backgrounds.
FAQ
What size is a Roblox YouTube banner?
Upload at 2048×1152. YouTube crops that to roughly 1546×423 in the middle on desktop and shows even less on mobile, so keep your avatar and any text inside that central strip. Everything outside it is decoration that most viewers never see.
What size is a Discord server banner?
960×540 for a server banner, and 680×240 for a profile banner. Both are wide crops, so pose your avatar off-centre and leave the opposite side clear for text.
Can I make a Roblox banner with my own avatar?
Yes, and that is the point. Type your Roblox username and your real rig loads — outfit, accessories and face. Most banner tools generate a Roblox-looking character from a prompt or drop you into a template; neither produces the character your audience recognises.
Do I need Blender to make a Roblox banner?
No. Renderbux poses and renders your avatar in the browser and exports a PNG. Blender gives you deeper control if you want it, but for a banner the extra hours rarely show at the size it gets displayed.
Can I export a banner with a transparent background?
Yes. Export transparent and drop your avatar onto your own artwork in Canva, Photopea or Figma. That is usually the better route for a banner, because the background has to survive being cropped differently on every device.