I will compare two CSV exports and build a reusable discrepancy report
About this Gig
Find differences between two CSV exports without checking every row by hand.
I compare records using an agreed identifier and return a clear report of matches, changed values, missing records, duplicate keys and invalid values. Original files stay unchanged. Ambiguous matches are flagged, not guessed.
BASIC: two CSVs, up to 1,000 rows each, one key and one field.
STANDARD: two layouts, up to 10,000 rows each and three fields, plus a reusable local browser tool and guide.
PREMIUM: three layouts, 20,000 total rows, documented mapping and a rerun on one additional sample.
Each package includes one correction round within the agreed scope. The gallery uses synthetic inventory data, not a client case.
Please message me before ordering with 10-20 anonymized sample rows and your matching rules. AI-assisted development or processing may be used; tell me any data restrictions first. Do not send credentials, payment details or unnecessary personal data.
No live account access, website downloads, accounting or tax certification, scanned PDFs or unspecified fuzzy matching. Communication and payment stay on Fiverr.
Technology:
Other
Expertise:
Data manipulation
•
Data validation
FAQ
What files and matching rules do you need?
Send UTF-8 CSV samples, the identifier column, fields to compare, row counts and the required output. Confirm how duplicates and number formats should be handled. Please remove unnecessary personal data. Excel-only sources need a separate scope check.
Will you change my files or connect to my accounts?
No. Originals remain unchanged and reports are separate files. This service does not require account credentials or live system access. The reusable browser tool runs locally. Duplicate or uncertain records are flagged for review, not silently merged.
