The software uses a simple "Copy and Paste" workflow for most downloads:

Upon opening, a pop-up will appear. You can close this window to start the free trial or enter a 20-digit registration code if you have purchased the Pro version. Guide to Using Jihosoft 4K Video Downloader

Jihosoft 4K Video Downloader Pro is a versatile tool that allows you to download videos in resolutions up to 4K and 8K from over 1,000 sites, including YouTube, Facebook, and Instagram. It offers a free trial version that supports downloading and converting up to with a speed limit of 1Mbps. How to Download and Install

Double-click the downloaded file (.exe for Windows or .pkg for Mac) and follow the on-screen prompts.

To ensure safety and avoid potential adware from third-party sites, always download the software directly from the official Jihosoft Video Downloader page.