Excel Add-in for PDF Report Comparison

I’m looking for a developer to build an Excel add-in that can compare two versions of a PDF report file and clearly display the differences.

Key Requirements:
A button will be added into the Excel ribbon.

When clicked, it should open a screen where I can upload two files (old and new versions).

After clicking a "Compare" button, a screen should display:

A side-by-side comparison of both files.

All changes clearly highlighted (added, removed, modified data).

An option to view a summary of all changes in a single list.

Ability to generate a comparison report (export to Excel and whenever i got the one of the cells about differences, on the right side i want pdf preview highlighted).

Expectations:
Clean and user-friendly UI.

Fast and accurate comparison results.

Should work with structured Excel files (e.g., reports with tables or rows/columns of data).

Bonus: If differences can be filtered (e.g., only show changed rows), even better.

Deliverables:
Fully working Excel add-in file.

Source code.

Simple user documentation (optional but helpful).


Relevant experience with Excel add-in development.

Timeframe and budget.

If you’ve built a similar comparison tool before, feel free to share examples.

Looking forward to working with someone who pays attention to detail and values clear output.