We have found 4 software records in our database eligible for .gif to .xlsx file format conversion.
You cannot exactly convert .gif pictures to Excel spreadsheets (.xlsx, .xls) directly. However, you may import images in several graphics format (PNG, GIF, JPG) to a spreadsheet as an object. This is probably what some dubious file converters offer under gif to xlsx conversion, so you would get a blank spreadsheet with inserted picture inside in the first list.
Some OCR tools also allows you to "read" images and import the data from them to spreadsheets. But that is something only dedicated OCR programs are capabale of.
GIF
Files with gif extension are one of the most common bitmap image file formats available on the Internet. Maximum number of colors is 256. This format supports also simple animations and is widely used for banners or fun animations.
XLSX
Files with xlsx extension are s used by Microsoft Excel for its workbooks (spreadsheets) in Office Open XML format. XLSX is the latest spreadsheet format used by Excel with the adoption of XML formatting first used in Office 2007. While older xls files were in proprietary binary file format, xlsx spreadsheets use a somewhat altered XML scheme.