UPLOAD GUIDE · UPDATED SEPTEMBER 30, 2026

Roblox Shirt Template Upload Checklist

Before uploading a Roblox shirt template, check the saved image—not just the editor preview. Use a Classic Shirt layout, confirm the PNG is 585 × 559 pixels, inspect transparency and panel placement, then test it on a Block Avatar in Roblox Studio. In Creator Dashboard, choose Shirt as the asset type before submitting.

Open the shirt template editor Jump to the checklist ↓

The 585 × 559 value is the size measured from Roblox's linked Shirt template and this editor's Shirt export. Roblox's current guide says PNG or JPG can be uploaded; PNG is the useful choice when clear pixels matter. Studio testing and Marketplace submission are separate steps.

The six checks, in order

Confirm the garment. A Classic Shirt wraps the torso and arms. A Classic T-Shirt is a square image on the front torso. In the editor, select Classic Shirt before placing art. If you only want a chest graphic, switch to T-Shirt instead; do not relabel the square file as a Shirt.
Inspect the actual downloaded file. Use Download PNG, reopen the saved file, and read its dimensions. This editor's Shirt PNG should be 585 × 559. The filename is a hint, not proof: a renamed 512 × 512 image is still square. For the underlying size comparison, see our template size test.
Check clear and painted areas. View the saved PNG on a checkerboard. Empty regions should show through; any white box imported with a logo remains painted white. Our browser export test sampled an empty pixel at alpha 0 and an opaque white pixel at alpha 255, despite both files being PNGs. Look at the saved file because a preview background can hide this difference.
Check the mapped regions. Look at front, back, sides, sleeves, and sleeve ends, rather than judging only the chest. Make one continuous feature, such as a stripe, cross a seam deliberately; a jump in that stripe is easier to detect than a flat color. This is a suggested diagnostic based on how Roblox maps the Shirt panels, not a claim that the browser preview reproduces a 3D avatar.
Test on a Block Avatar in Studio. Roblox's documented free test uses Avatar → Character → Block Avatar, then a Shirt object under the Rig with its ShirtTemplate property set to the image. Rotate the rig to inspect joins, sleeve orientation, and unintended blank patches. If the test fails, fix the image and repeat before Marketplace submission.
Match the upload form to the file. In Creator Dashboard, open Avatar Items → Classics, upload the checked image, set Asset Type to Shirt, and enter a name and description. Review the selection before clicking Upload. Roblox says Marketplace publishing has eligibility requirements and a fee; consult the current dashboard and official policy for your account rather than assuming a fixed charge.

Stop before the paid step if any of these are true: the file is square, the intended clear area is opaque, a front-only preview is the only fit check, or the upload form says T-Shirt or Pants. Save a corrected PNG and repeat the relevant check.

Which check catches which mistake?

This is an original failure-to-check map for this editor. It separates properties a file viewer can prove from fit that requires Roblox Studio.

Mistake	Fastest check	Correction
Square chest art submitted as a Shirt	Read saved pixel dimensions and selected garment	Choose Classic Shirt and rework art on its mapped canvas, or upload as T-Shirt.
Opaque rectangle around a logo	Reopen PNG over checkerboard	Remove the background in the source image, import again, and export again.
Front looks right; sleeves or back break	Rotate a Block Avatar test rig	Move or redraw artwork on the affected mapped panels.
Correct image, wrong Marketplace category	Read Asset Type immediately before Upload	Select Shirt for a Shirt template.

Why the checks are arranged this way

The first three checks cost only a local file inspection. They catch wrong type, wrong dimensions, and an unwanted background before you spend time on a rig. A file inspector cannot tell whether a stripe meets across two body faces; that needs a Studio view. The final dashboard check prevents a correct Shirt file from being sent under the wrong classic clothing type. This ordering is our practical workflow, assembled from the editor's observed exports and Roblox's documented Studio and upload steps.

We verified this editor's actual Download PNG behavior in headless Chrome: a Classic Shirt export measured 585 × 559, a guide visible on the editor was absent from the exported corner, and transparent versus opaque source pixels stayed distinct in the saved image. Those tests establish file behavior only. We have not used Roblox Studio to certify a particular design's garment fit; use the rig check for that.

Official sources and test scope

Roblox Creator Hub: Classic clothing — garment types, official template, and accepted image formats.
Roblox Creator Hub: Test classic clothing — Block Avatar rig and ShirtTemplate procedure.
Roblox Creator Hub: Upload classic clothing — dashboard path, asset type, and submission steps.
Avatar Shirt Maker editor — first-party browser export checks described above.