7 File Preview Tasks You Can Do in a Browser (2026)

If you only need to inspect a file, a browser preview can save time. Here are practical tasks for the free online file viewer from WebTech360 Viewer.

Read a PDF

Open the PDF viewer directly in a modern browser. Supported files are processed locally on the device rather than uploaded to a WebTech360 server.

Inspect a ZIP archive

Open the ZIP viewer directly in a modern browser. Supported files are processed locally on the device rather than uploaded to a WebTech360 server.

Scan structured JSON

Open the JSON viewer directly in a modern browser. Supported files are processed locally on the device rather than uploaded to a WebTech360 server.

View an HEIC photo

Open the HEIC viewer directly in a modern browser. Supported files are processed locally on the device rather than uploaded to a WebTech360 server.

Review a CAD drawing

Open the DWG viewer directly in a modern browser. Supported files are processed locally on the device rather than uploaded to a WebTech360 server.

Rotate a 3D model

Open the 3D model viewer directly in a modern browser. Supported files are processed locally on the device rather than uploaded to a WebTech360 server.

Check the file source and extension, avoid unknown executables or macros, and use specialist software when editing or formal validation is required. Browse the supported formats list.