SheetJS Data Preview Live Demo
                    (Base64 text works back to IE6; drag and drop works back to IE10)
    
                    Source Code Repo
                    Issues?  Something look weird?  Click here and report an issue
                    Output Format: 
                    
                    
Drop a spreadsheet file here to see sheet data
... or click here to select a file
Advanced Demo Options: Use Web Workers: (when available) Use readAsBinaryString: (when available)