Octa GST is a fast, easy to use offline GST return preparation software. If you don't have it, please download and install on your computer now.
Using Octa GST, you can export GSTR-1 JSON file to Excel in just a few clicks.
Select the GSTIN and return period: In the top right corner of Octa GST, select the GSTIN and return period which matches the GSTR-1 file.
Open GSTN Tools page: In Octa GST, go to the GSTN Tools page by selecting it in left pane:
Select the GSTR-1 file & Export: Select the GSTR-1 file downloaded from Govt portal and click on Export button.
Once GSTR-1 file is exported to Excel, Octa GST will automatically open it on your computer. So in just few clicks, you can export your GSTR-1 file to Excel.