I will remove duplicates and merge your customer or contact list

United States

I speak English, Spanish

Spreadsheet and data cleanup with a full change log

I clean up messy spreadsheets and records so you can actually use them. Duplicate rows, mixed date formats, inconsistent names, inconsistent categories: I standardize them using agreed rules, keep you...
About this Gig

Repeated contacts making your list hard to use?


I remove confirmed duplicates and combine Excel or CSV contact lists using matching rules you approve. You receive a separate cleaned XLSX, a removal/merge log and questions for uncertain matches. Your original stays unchanged.


Names alone are not proof of a duplicate. Blank keys, conflicting details and look-alike IDs stay separate for review. Merges keep the source-row trail and use your written conflict rules.


Message me with total rows, columns, files and your preferred matching key. No lead sourcing, scraping, email verification, outreach or CRM access is included. Google Sheets must be exported first. No macros or external connections.


Files are processed with cloud AI tools such as Claude and ChatGPT, then checked against agreed rules. No-AI orders are declined. Share only data you are authorized to process this way. Do not send SSNs, banking details, medical records, credentials or confidential data without written clearance.