StoreSathi Download StoreSathi Download Real documents printed by StoreSathi for a sample shop, so you can see exactly what your customers will get.
Every format
GST invoice format CGST and SGST, HSN summary, UPI QR 
Quotation format IGST for another state, valid-until date 
Delivery challan format Goods sent ahead of the bill 
Credit note format Goods returned against a bill Each document here was made by the same code that prints bills in the StoreSathi desktop app, using the Classic design on A4. The tax on every line is worked out the way the app works it out.
The shop, customers, GSTINs and figures are made up. GST rates and HSN codes are examples; set the ones that apply to your own items, and check them with your CA.
StoreSathi is free for 30 days with every feature. No card needed.