Stop repeating the same spreadsheet cleanup work every week.

CSV & Excel File Merger is a lightweight Python automation for freelancers, analysts, operators, and small businesses that regularly receive CSV or Excel exports from different sources.

Merge multiple files into one clean dataset, track where each row came from, handle different column structures, remove duplicate rows, and export a clean Excel or CSV result.

WHAT YOU GET

• Python automation script

• Windows launcher

• macOS launcher

• CSV, XLSX and XLSM input support

• Union schema mode

• Strict schema mode

• Automatic header cleaning

• Empty row and column cleanup

• Source File tracking

• Source Sheet tracking

• Duplicate-row removal

• Excel output with Merged Data and Merge Summary sheets

• CSV output

• JSON audit report

• Sample CSV and Excel files

• Demo output

• Step-by-step PDF guide

• Troubleshooting notes

• Security notes

HOW IT WORKS

1. Put the CSV or Excel files you want to merge into the input folder.

2. Choose the merge mode.

3. Run the included script or launcher.

4. The tool reads the supported files and normalizes their structure.

5. The merged dataset is written to the output folder.

6. An audit report records the operation.

MERGE MODES

Union Mode

Combines files even when their columns are not identical. Missing values are left blank and the available columns are preserved.

Strict Mode

Checks that the input files use the same column structure before merging.

DEDUPLICATION

Use the deduplication option to remove duplicate rows based on the actual dataset values.

Source File and Source Sheet information remain available so you can trace where records came from.

WHAT YOU CAN USE IT FOR

• Combining monthly CSV exports

• Merging supplier spreadsheets

• Consolidating freelance client data

• Combining sales reports

• Cleaning recurring Excel exports

• Preparing datasets for analysis

• Building repeatable spreadsheet workflows

REQUIREMENTS

• Python 3.11 or newer

• Windows, macOS, or Linux

• Basic command-line familiarity recommended

The included Windows and macOS launchers reduce the setup work.

No paid API or external service is required for the core file-merging workflow.

OUTPUT

The Excel output contains:

• Merged Data — the combined dataset

• Merge Summary — file counts, row counts and processing information

A CSV output and JSON audit report can also be generated.

IMPORTANT

This is a downloadable local automation tool, not a hosted web application.

The tool processes the files on your own computer.

Do not process confidential or regulated information unless your own security and compliance requirements allow it.

SUPPORTED FILES

• .csv

• .xlsx

• .xlsm

NOT INCLUDED

• Microsoft Excel

• Paid cloud storage

• Hosted automation

• Ongoing technical support

• Custom development for your specific workflow

LICENSE

Commercial use is allowed for your own business and client projects.

You may modify the scripts for your own workflows.

You may not resell, redistribute, sublicense, or repackage the original files as a competing product.

DELIVERY

You receive the complete digital toolkit as an instant downloadable ZIP after purchase.

The ZIP contains the automation, documentation, sample files, and supporting materials.

REFUNDS

Please review the included files, requirements, supported formats, and description before purchasing. Getly's platform refund policy applies to the listing.