Synology Image Assistant Extension enhances browsing capabilities on your web browser. It supports displaying mainstream formats, including HEIF/HEVC files. With this extension, JPEG thumbnails are automatically generated when files are uploaded and viewed across all browsers/devices. Synology Image Assistant Extension needs to be used in conjunction with its desktop utility. Download it via Download Center: https://www.synology.com/en-global/support/download Feel free to post any questions you have in Synology Community: https://community.synology.com/enu/