Coosei

Coosei is a software developer based in China that specializes in custom file upload solutions for Shopify merchants. Established in 2026, the company currently maintains a focused portfolio consisting of one active application. This developer is dedicated to providing specialized tools within the custom file upload category.

The developer's flagship offering, Logo Customizer: Design Studio, allows customers to upload, position, and preview logos directly on products. While the app is currently building its initial user base and has not yet accumulated reviews, it serves as the foundation for the developer's presence in the custom file upload space.

Coosei focuses on delivering functional design tools to improve the customization experience for online storefronts. The developer is committed to the ongoing development of its primary app, providing merchants with precise control over customer-provided assets.