Apps Two client side utilities we built for GST practitioners and finance teams.No sign up and your files/data never leave your Browser. JSON - Excel Convert JSON (GSTR-1, GSTR-2A and GSTR-2B into clean, ready to review Excel workbook irrespective of file size. Open App PDF Page Manager Remove specific pages from a PDF and/or insert pages from another PDF at any position, split pages, add page number and add stamp. Open App Both apps open on apps.a4corporatesolutions.com and process everything on your own device.