Electronically secure documents using .NET Cloud SDK. Use REST API To add digital signatures To PDF, Word, Excel, Presentations & images....DOTM, ODT, OTT, RTF, TXT Spreadsheet : XLS, XLSX, XLSB, XLSM,... ODS, OTS, CSV, TSV Presentation : PPT, PPTX, PPTM, PPS, PPSX...