ViewSTL is an innovative platform for viewing and sharing 3D models online, specifically tailored to facilitate the sharing of STL files. This platform not only supports the STL format but also accommodates various other file types, making it convenient for users to upload and visualize their 3D creations. Users have access to customizable viewing options, including adjustments for background colors and lighting effects to enhance the visual experience. Additionally, ViewSTL allows for the capture of screenshots or videos, simplifying the process of sharing these 3D models with others. The platform promotes collaboration by enabling users to share their models with fellow users seamlessly. Importantly, ViewSTL operates entirely in your web browser, eliminating the need for any software installation, as it employs the three.js library alongside HTML5 and traditional JavaScript. Notably, no data is uploaded to a server; everything operates locally on the user’s device. This functionality not only allows for easy display of 3D files on personal websites but also enables real-time interactions with the models directly within web pages, providing a dynamic user experience. With ViewSTL, the possibilities for showcasing and collaborating on 3D designs are virtually limitless.