How to Automate Invoice PDF-to-CSV Conversion Using Node.js and an API

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Manually copying invoice data from PDFs into spreadsheets is time-consuming and prone to errors, making it a strong candidate for automation. A Node.js script can streamline this process by sending invoice files to an API endpoint that returns structured CSV data. The script uses the Axios library to upload PDF files and writes the API response directly to a CSV output file. Batch processing is also possible by iterating over an entire directory, making it practical for teams handling large volumes of monthly invoices. The resulting CSV files can be imported into spreadsheets, accounting software, or business intelligence tools, reducing manual data entry and improving accuracy.

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