Written by: Nuno Leiria, Founder & CEO @ Nilo | Last updated: July 20, 2026
Key Takeaways
- You need a 585×559 transparent PNG for a Roblox shirt. It wraps around the torso, arms, and sleeves. Uploads cost 200 Robux and require ID verification or a linked parental account plus an active subscription.
- The template has fixed dimensions and transparency. Any change creates stretching, misalignment, or upload rejection.
- Classic shirts use 2D PNG templates. 3D layered clothing also needs cage geometry, rigging, and triangle counts within Roblox’s limits.
- AI-native tools like Nilo speed things up by generating, cleaning up, rigging, and exporting assets directly in your browser, without manual modeling.
- Try the full workflow in your browser and start building for free in Nilo’s open beta.
Keep Your Roblox Shirt Template Transparent
Your Roblox shirt template needs a transparent background so only the torso, sleeve, and arm panels show on your avatar. The template wraps around the character’s torso front, back, sides, and both sleeves, so every region of the PNG maps to a specific body part. If you fill the background with a solid color, your avatar looks like it is wearing a painted block instead of an actual shirt.
When you download a base template, open it in an image editor that supports PNG transparency, such as GIMP or Photoshop. Once the template is open, stay inside the mapped regions so your design lines up correctly on the avatar. When you finish, export as PNG with the alpha channel preserved so the empty areas stay see-through.
Roblox Shirt Template Size: 585 x 559
The official Roblox shirt template measures exactly 585×559 pixels. This is a strict requirement. Any other resolution causes stretching, misalignment, or upload rejection. The pixel grid maps specific zones to specific body parts, and understanding these zones helps you design inside the right boundaries:
- Torso front and back panels
- Left and right arm panels
- Left and right sleeve panels
Each zone has fixed pixel coordinates inside the canvas. If your design bleeds outside those zones, it appears warped on the avatar. Use bold shapes and simple graphics, because tiny text and micro-patterns usually blur out at normal in-game camera distances.
[Image placeholder: Labeled 585×559 transparent PNG template showing torso, arm, and sleeve zones]
Where to Download the Roblox Shirt Template
You can grab the base transparent PNG template from the Roblox Creator Hub. Download the file, open it in your image editor, and use it as your starting canvas. Do not resize the canvas. Keep transparency intact. Keep the guide layers separate so you can paint your design on top of the lines.
If you want to skip manual pixel painting, you can jump to the AI workflow section. Nilo can generate shirt textures directly on the correct canvas from a text prompt or sketch, so you avoid detailed pixel work.
How to Upload a Roblox Shirt Template
Before you explore the AI option, it helps to know the standard upload path. Once your transparent PNG matches the required dimensions, follow these steps:
- Go to create.roblox.com and log in.
- Select Avatar Items from the left menu, then choose Shirts.
- Click Upload Asset and select your PNG file.
- Pay the 200 Robux upload fee (effective July 14, 2026) and submit the shirt for moderation.
- After approval, the shirt appears in your inventory and you can wear it or list it on the marketplace.
To publish and sell the shirt, you also need ID verification or a linked parental account and an active Plus or Premium 1000/2200 subscription, plus a publishing advance starting at 600 Robux.
[Image placeholder: Roblox Create page upload flow — step-by-step screenshots]
Roblox Pants Template and Matching Outfits
The Roblox pants template follows the same rules as the shirt template: the same dimensions and a transparent PNG format. The canvas maps the left leg, right leg, and waist panels to specific zones. The upload flow is identical. Go to Avatar Items, choose Pants, and upload your file.
Plan color blocks for torso, sleeves, and pant legs together so your outfit feels like one design instead of random pieces. When you design shirts and pants as a set, with matching colors, patterns, and seam lines, your avatar looks much more polished.
Roblox Shirt Maker Tools in Your Browser
Several browser tools can turn text prompts into Roblox shirt textures. TextureFast, for example, creates clothing textures directly on the correct canvas from prompts about fabric, colors, themes, and graphics, then lets you preview on block avatars before exporting an upload-ready PNG. These tools speed up the design phase, but you still handle upload, moderation, and marketplace rules yourself.
Most shirt makers stop at the 2D texture. If you want full 3D clothing, with layered clothing, proper cage geometry, and rigging to the avatar skeleton, you need a more complete pipeline. That is where Nilo stands out: it covers the whole process from generation to rigging and export in one browser tab.
See how Nilo handles the complete 3D clothing pipeline — join the open beta for free.
Faster Path: Generate Custom Roblox Shirts with AI
Manual PNG editing works, but it takes time and only covers classic 2D shirts. If you want custom 3D clothing that already respects Roblox’s performance rules, Nilo gives you a faster end-to-end workflow in your browser. You avoid Blender installs, extra downloads, and long chains of tools.
Here is how the Nilo workflow runs from idea to Roblox-ready asset:
- Open Nilo in your browser. No installation is needed. Right-click an empty spot in the world, choose “create object,” then pick “Roblox character.”
- Generate your clothing texture. Click the random idea button or type your own prompt, such as “neon streetwear hoodie with purple-to-cyan gradient.” Use the draw tool to circle areas you want to change so the AI focuses only on those parts during refinement.
- Control your polycount with the LOD slider. LOD means Level of Detail, a system that reduces the number of triangles in your model so it runs smoothly in-game. This matters because Roblox enforces strict triangle limits on individual meshes, and going over those limits causes upload issues. Nilo’s LOD slider keeps your asset inside those limits automatically, so you skip manual retopology, which usually takes a long time in tools like Blender.
- Rig and animate with one click. Rigging connects your 3D model to a skeleton so it moves with the avatar. In Nilo, you trigger this with a single click. You can then add an animation by typing what you want the character to do, without opening separate animation software.
- Export and upload. Connect your Roblox account with the connect button, then download an RBXM file straight to your Roblox account for use in Roblox Studio. You can also export FBX and glTF for Unity, Unreal Engine, or Blender.
[Image placeholder: Before/after mesh comparison — messy AI-generated mesh from a generic tool vs. clean Nilo-optimized shirt topology]
This workflow delivers the speed improvements that many builders talk about. Builders in Nilo’s February 2026 survey described the difference clearly: “I do not have to spend hours on 3D modeling the simplest things. Now I can use Nilo and do it in 15 seconds.” Another builder said, “There are no limits on what you can create — just type, draw or add in an image and you can generate, rig, customise and place a fully 3D model within minutes.”
Start creating Roblox-ready shirts in minutes — join Nilo’s open beta at no cost.
Common Mistakes Checklist
Both classic templates and AI workflows can fail if you miss a few basics. Watch out for these common issues that break shirts or block uploads:
- Wrong dimensions. Exporting incorrect dimensions causes stretching or clipping on avatars. Always confirm your PNG matches the required template size before you upload.
- Missing transparency. As mentioned earlier, a solid background makes your shirt look like a painted block. Always export with the alpha channel preserved.
- High polycounts on 3D assets. Roblox currently enforces a 21,000 triangle limit per mesh for uploads. Exceeding this limit causes upload failure or heavy lag. Use Nilo’s LOD slider to stay inside Roblox’s limits automatically.
- Designing without previewing on both R6 and R15. Panel alignment and proportions differ slightly between the two avatar systems. Preview on both before you export.
- Skipping moderation requirements. Make sure your account meets the verification and subscription requirements described in the upload section before you start.
How to Tell If Your Shirt Works
You can check your shirt’s success by looking at a few clear signals:
- Roblox Studio imports the file without errors or performance warnings.
- The shirt appears correctly on your avatar, with no stretching, missing panels, or clipping through the body.
- The asset passes Roblox’s moderation review and shows up in your inventory.
- For 3D assets, the triangle count stays within Roblox’s limits and the model runs smoothly on mobile devices.
- The full journey, from design to visible shirt on your avatar, takes minutes instead of hours.
If you use Nilo’s workflow, the LOD system manages triangle counts for you, and the direct Roblox export lets you skip manual Studio import steps.
Frequently Asked Questions
What file format does a Roblox shirt need to be?
Classic Roblox shirts must be uploaded as PNG files with a transparent background. The dimensions must match the template specifications (585×559 pixels). Any other format or size creates upload errors or visual distortion on the avatar. If you create 3D layered clothing instead of a classic shirt, you export as FBX or GLB, and the asset needs cage geometry and rig binding to pass Roblox’s checks.
Can I make a Roblox shirt on mobile?
You can design and upload shirts from a mobile browser, although most traditional image editors focus on desktop. Nilo runs fully in the browser on both desktop and mobile, with no installation. You can generate, refine, and export shirt textures from your phone, then connect your Roblox account and send the file straight to Roblox Studio.
Can I export Nilo-created shirts to Unity or Unreal Engine?
Yes. Nilo exports to standard 3D formats such as FBX, OBJ, STL, and glTF. These formats work with Unity, Unreal Engine, Blender, VRChat, and most other 3D tools. Nilo does not lock you in, so you can treat it as an asset creation step and continue your project anywhere else.
How is Nilo different from prompt-to-game tools like Rosebud AI?
Rosebud AI generates a game from a text prompt, and the process mostly ends there. Nilo works as a game engine first, so you stand inside a 3D world where you build, tweak, and playtest in real time. AI acts as your co-pilot instead of replacing your creativity. Nilo also covers the full asset pipeline in one place, including generation, retopology, rigging, animation, and Roblox-focused export.
Do I need to know how to use Blender to make Roblox shirts with Nilo?
No. Nilo handles retopology, rigging, and performance optimization for you. You describe what you want with a text prompt, a sketch, or a reference image, and Nilo generates a Roblox-ready asset. The LOD slider keeps your triangle count inside Roblox’s limits, so you avoid manual mesh editing. Builders in Nilo’s February 2026 survey put it this way: “It lets my imagination free and let loose instead of having to plan out a whole blueprint on what to make with my past modeling tools.”
Conclusion
The classic transparent PNG template still works well for Roblox shirts, and the upload flow feels simple once you know the rules. If you are spending hours in Blender fixing polycounts, rebuilding meshes, or juggling tools just to ship one asset into Roblox Studio, you have a smoother option.
Nilo’s browser-based workflow lets you generate, clean up, rig, and export custom Roblox shirts in minutes, without extra downloads or Blender cleanup. In Nilo’s February 2026 survey, 93% of builders said they would recommend it to a friend. The open beta is live and free to join.
Join Nilo’s open beta and experience the full workflow for free.
