Log Data Comparison Report

I have several .txt / .log files that need to be examined side-by-side. The goal is twofold: first, highlight any additions, deletions or other differences between the files, and second, extract useful statistics and trend lines so I can see key indicators at a glance.

What I need from you: a concise PDF report that blends clear narrative with supporting charts. Within that document I expect a section that pinpoints line-level changes across the files, followed by visual summaries—counts, averages or any other indicators you identify as meaningful—so the insights are immediately obvious without digging back into raw logs. Feel free to automate parsing with Python, R, or the tooling you know best, as long as the final report is clean and easy to share.