XLS
JPEG files
XLS ( Excel spreadsheet) is an older file format used for storing spreadsheet data. Although largely replaced by XLSX, XLS files can still be opened and edited in Excel. They contain tabular data with formulas, charts, and formatting.
JPEG (Joint Photographic Experts Group) is a widely used image format known for its lossy compression. JPEG files are suitable for photographs and images with smooth color gradients. They offer a good balance between image quality and file size.
More JPEG conversion tools available