Add a feature for analyzing exported bank transactions

Small business owner here and I’ve been trying to get a clearer overview of the finances in my business. Sometimes I export transactions from the business bank account as csv or xlsx just to look through them outside the banking app. it’s useful but once you have a few months of data it becomes a pretty long spreadsheet. Because of that I ended up putting together a small page for myself that reads those export files and summarizes the data a bit. you just load the bank export and it processes the file locally in the browser. there’s no bank login or account connection and the data stays on the computer. It mainly gives a quick overview of things like spending by category, top merchants, monthly income vs spending, net cashflow over time and recurring payments that show up in the transactions. For me it’s just a different way to look at exported data compared to the charts inside the banking apps. I’m curious how other small business owners handle this. If you export your bank transactions, do you usually just review them in Excel or Google Sheets or do you use some other way to summarize or analyze them?