I will clean up and deduplicate your business spreadsheet

United States

I speak English

Business data extraction and spreadsheet cleanup, with sources on every row

I turn public business data into clean spreadsheets: extraction from directories and rosters that allow it, and cleanup and deduplication of the files you already have. Every row I deliver carries its...
About this Gig

You have a business list (a CRM export, a conference download, spreadsheets a team has added to for a year) and it has duplicates, inconsistent formatting, half filled columns and three spellings of the same company. I return it clean: one row per entity, consistent formatting, and a change log showing exactly what was merged, altered or removed, so nothing is taken on trust.


Nothing is fetched from the web. Your file is the only input, and the work is deterministic: the same file in gives the same file out, which is why this is the fastest of my data gigs.


Scope: business records only (company names, addresses, contact details, categories). A file whose subject is private individuals is declined before work starts, at no charge. No enrichment: nothing is added that is not already in your file, because anything added would need its own source.


You receive cleaned.csv and cleaned.xlsx (one row per entity, headers normalised) and changes.csv (row identifier, column, value before, value after, reason). Standard and Premium add a review tab for uncertain matches; Premium adds a data dictionary and completeness summary. The gallery image shows an illustrative before and after.

Technology:

Excel

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Python

Expertise:

Data manipulation

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Normalization

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Transformation