I will clean and audit your CSV or Excel file with a transparent change log
SignalSheet LabNEWNew serviceAbout this service
I will turn one messy CSV or Excel file into a clean, documented result. I work on a copy, preserve the original, and do not invent missing values. I check separators, headers, blank cells, exact duplicates, inconsistent dates/numbers, inferred column types, and exploratory outliers. You receive the cleaned file plus a concise change log and validation summary. For sensitive data, I can use a local-first browser workflow so the source stays on your device. Before starting, I confirm the row definition, desired output, and any rules for ambiguous records.
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Quick CSV Repair
- 1 CSV up to 1,000 rows
- Separator, header, and obvious format repair
- Exact duplicate check
- Cleaned CSV + brief validation note
CSV Cleanup + Change Log
- 1 CSV up to 5,000 rows
- Missing, duplicate, and format review
- Cleaned CSV on a preserved copy
- Change log + Markdown summary
CSV Audit + Findings
- 1 CSV up to 20,000 rows
- Quality metrics + column profile
- 3–5 prioritized findings and recommendations
- CSV, JSON, and Markdown exports
What the seller needs from you
- Upload the CSV/XLSX or a small anonymized sample, and tell me what one row represents plus the desired output or import format. *
- List any rules for dates, decimals, duplicate keys, and fields that must not change. *
- Do not send passwords or unnecessary personal data. *
Buyers fill these in right after purchase, and the delivery clock starts then.
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Drop-Ins are fixed packages. When the work needs its own scope, budget or timeline, post it and let freelancers come to you with proposals.