Data Cleaning & PDF Generator Software

I have mixed text-and-numeric data coming in raw, messy spreadsheets and CSV files. I need a small desktop or web-based tool that lets me import those files, tidy them up, and export the final result as well-formatted PDFs.

Inside the cleaning interface I need to:
• Handle missing values intelligently (flag, fill, or remove).
• Re-format text, with built-in spelling correction so names, addresses, and other fields come out consistent.

Once the data is clean, the same application should let me design or pick a simple template and generate one PDF per record or a consolidated report in a single click.

I’m flexible on language and framework—Python with pandas and ReportLab, C# with iText, or anything comparable—as long as the final deliverable is:
1. An installable or easily deployable application.
2. Source code with clear comments.
3. A brief user guide that shows how to load data, run the cleaning steps, and produce the PDFs.

If this sounds like a tool you can build efficiently and reliably, I’d love to see how you would approach it and how quickly you could deliver a first working version.