Pixel Count optimization process: WANNA sneakers case

Introduction

A client provided a sneakers model containing textures that significantly exceeded the pixel limit.  The model had multiple 4096x4096 px textures, which led to an overall pixel count  far beyond the allowed range.

WANNA Studio enforces strict limits on the total pixel count of textures in a project:

• 3D Viewer: 37,748,736 px
• VTO (Virtual Try-On): 18,874,368 px

This means that the combined pixel count of all textures in the project must not exceed these values.

Note. The studio automatically resizes any textures exceeding 2048x2048 px, reducing them to this resolution. 

For footwear models, the maximum allowed resolution for any individual texture is 1024x1024 px.

Optimization workflow:

Analyze the project and calculate pixel count

• The easiest way to check the total pixel count is to export the project in glTF + texture format
• This allows you to view the extracted textures in the file explorer and manually calculate the total pixel count
• Use the following pixel values for reference:
  • 2048x2048 px = 4,194,304 pixels
  • 1024x1024 px = 1,048,576 pixels
  • Sum up the total pixel count in the project

Optimize the textures

• Identify how much the total pixel count exceeds the limit
• Determine which textures can be resized while maintaining quality
• The best practice is to reduce texture resolution in steps:
  • 2048 → 1024 → 512 → 256 → 128 px
• Many textures can be safely reduced by half if they don’t contain fine details or essential information
• For example, flat color textures, uniform materials, or low-detail areas can be optimized aggressively

Verify the Final Pixel Count

• Recalculate the total pixel count after optimization
• Ensure the project stays within the allowed limits for 
  • 3D Viewer (37,748,736 px) 
  • VTO (18,874,368 px)