Files with the .FR3 extension contain a report page layout – its structure, its fillable forms, and its text and images, in compressed or non-compressed form.

FR3 files are created in the FastReport Studio app and can be embedded in report printing software. When the app creates a report based on an FR3 file, it creates what is called a ready-made report, which can be saved in the FP3 format and viewed using the FastReport Viewer app.