Sketchup is a popular 3D modeling software used by professionals and hobbyists alike. If you've received a Sketchup file but don't have the software installed on your computer, don't worry! There are several easy ways to view Sketchup files online without needing to download any software. Here's how you can do it:

1. Use Sketchup Viewer: Sketchup offers its own web-based viewer that allows you to upload and view Sketchup files directly in your web browser. Simply go to the Sketchup Viewer website, sign in with your Trimble ID, upload your file, and start exploring your 3D model.

2. Convert to a 3D online format: If you prefer not to use Sketchup's own viewer, you can convert your Sketchup file to a more widely supported 3D format like OBJ or STL using free online converters. Once converted, you can use one of many online 3D viewers to open and interact with your model. Some popular 3D online viewers include Clara.io, 3D Viewer Online, and Sketchfab.

3. Use cloud storage services: Another way to view Sketchup files online is to upload the file to a cloud storage service like Google Drive or Dropbox. These services allow you to preview 3D models directly in your web browser without needing to download the file. Simply upload your Sketchup file to your cloud storage and open it to view it in your browser.

4. Export as PDF or image: If you don't need to interact with the 3D model but just want to view it, you can export your Sketchup file as a 2D image or a PDF. Once exported, you can easily view the file in your web browser or any image viewer without needing any specialized software.

By using these methods, you can easily view Sketchup files online without the need to install any software on your computer. Whether you're a designer, architect, or hobbyist, these options provide a convenient way to access and explore 3D models without any hassle.