Need help optimizing this n8n workflow

Hey folks, I built this workflow for an influencer marketing agency that gets 20–30 invoices every week via WhatsApp/Telegram in all sorts of formats — PDFs, Word docs, JPGs, PNGs.

Until now, someone was manually extracting all the data into Google Sheets — a super time-consuming process. So I set up this automation:

If the invoice is a PDF, it follows 1st branch.
If it’s a .docx, follows 2nd branch, where it first gets converted, then processed.
If it’s an image (jpg/png), it’s analyzed and extracted in the 3rd branch
If it's an image as a document it goes to 4th branch
Finally, the structured data is pushed into a Google Sheet.

The workflow works, but right now I’ve built separate flows for each file type, which makes it long and (probably) more complex than it needs to be.

👉 I’d love feedback from the community on how to optimize/shorten this workflow while still handling multiple file types reliably.

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