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Sheet Merger & Cleaner Pro

Merge any number of CSV or Excel sheets with different layouts into one table: headers lined up, totals and duplicates removed, dates and amounts fixed.

Pro Use it here · Ready in about 1 minFormat: Claude skill#Finance & ops#Claude skill packs

  • You getClaude skill + setup guide
  • DeliveryComing soon
  • Tested36/36 checks pass
  • Refund14-day refund

$19one-time, launch price

ProReady

Buy Now · $19

Buy Now opens our own checkout on this site; the payment provider is the merchant of record. You get the download right after payment. 14-day refund. Refund policy.

Coming soon. Press "Get notified" and you'll get an email when it launches. It will sell on this site, with a 14-day refund.

Use it here

Drop your file and get the result in seconds. It runs in your browser, so your files never leave your device. Free: merge and clean up to 5 files.

Open-source notices

See it work

How Sheet Merger & Cleaner Pro moves through a job, step by step. The run below is an example output, written from what this agent does. It isn't a live run on your data.

Any number ofsheetsLine up columnsDedupe by keymerged.csvYou reviewAny number of sheetsLine up columnsDedupe by keymerged.csvYou review

Sample input

Any number of CSV, TSV or XLSX files (or a folder)

Example output Illustration

You get:
- merged.csv with a source file (and sheet) column
- report.md with every change counted
- duplicates.csv
- files.csv

What you get

  • Planned contents (not released yet):
  • Skill folders you add to Claude
  • A Python script behind each skill, so numbers are calculated, not guessed
  • Sample data and the test suite, so you can check it yourself

What it does

  • merged.csv with a source file (and sheet) column
  • report.md with every change counted
  • duplicates.csv
  • files.csv

Tools and costs you'll need

  • Claude.ai with code execution, or Claude Code
  • Python 3.10+ (standard library only)
  • CSV, TSV or XLSX files from any source

Third-party costs are paid to those providers, not to us.

Test report

36/36 automated checks pass on Python 3.13.5 (standard library only); 15 cases incl. invalid input, duplicates and upstream failures. Not tested: .xls (old Excel) files; merged cells and formulas (values are read as stored); XLSX inputs in the shipped tests (CSV only).

Known limits

  • Not tested yet: .xls (old Excel) files; merged cells and formulas (values are read as stored); XLSX inputs in the shipped tests (CSV only).

Live demo

  • No live demo yet. We'll add one when it ships.

Demos use fictional businesses and data.

Start free

Try Free Claude Skills Sampler first

Two small Claude skills, free: clean a messy CSV, and check which AI crawlers can reach your site.

See the free agent

What's AI here, and what isn't

This is an AI agent: it uses an AI model to read, sort, score or draft. It runs in your own accounts. Anything it would send outside your business waits for your approval unless you choose otherwise, and it never needs your passwords. Our AI disclosure.

Docs and help

Setup steps, fixes and version history. The help box answers from these docs; it is not a person.

GuideTroubleshootingChangelogHelp

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Questions about Sheet Merger & Cleaner Pro

What does Sheet Merger & Cleaner Pro do?

Merge any number of CSV or Excel sheets with different layouts into one table: headers lined up, totals and duplicates removed, dates and amounts fixed. merged.csv with a source file (and sheet) column. report.md with every change counted. duplicates.csv. files.csv.

What do I need to run Sheet Merger & Cleaner Pro?

You need: Claude.ai with code execution, or Claude Code; Python 3.10+ (standard library only); CSV, TSV or XLSX files from any source. Third-party costs are paid to those providers, not to us.

Is Sheet Merger & Cleaner Pro tested?

36/36 automated checks pass on Python 3.13.5 (standard library only); 15 cases incl. invalid input, duplicates and upstream failures. Not tested: .xls (old Excel) files; merged cells and formulas (values are read as stored); XLSX inputs in the shipped tests (CSV only).

How do I get Sheet Merger & Cleaner Pro?

It sells on this site for $19, one-time. When payments are open, the button on this page says "Buy Now": you pay through our checkout (the payment provider is the merchant of record) and get the download right after, with a 14-day refund. If it says "Get notified", payments aren't open yet.

Which files work?

CSV, TSV, semicolon-separated text and .xlsx. Old .xls files need saving as .xlsx first.

What does it drop?

Blank rows, total and subtotal rows, repeated header rows and exact duplicate rows. Each is counted in report.md, and duplicates are listed in duplicates.csv.

Does it upload my files?

No. Everything runs in your Claude session or on your computer.

Which row wins with --key?

The later one, in the order the files are given (folders are read in name order). The replaced row is listed in duplicates.csv.

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