How to fuzzy deduplication vs excel remove duplicates — key differences
- Step 1Start with exact dedup — Run Excel's built-in Remove Duplicates first to remove 100% identical rows cheaply.
- Step 2Identify fuzzy columns — Determine which remaining columns may contain near-duplicates (company names, addresses).
- Step 3Run fuzzy dedup — Upload the remaining rows and run fuzzy dedup with an 85% threshold.
- Step 4Validate results — Review the match report and adjust the threshold if needed before accepting deletions.
Frequently asked questions
Is fuzzy dedup slower than exact dedup?+
Yes — fuzzy dedup is O(n²) in the worst case because every row pair must be compared. It's optimized in JAD for up to 100K rows.
Which is better for product SKUs?+
Exact dedup. SKUs are codes with structured formatting — near-match on SKUs would create false positives.
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Every JAD Excel tool runs entirely in your browser using SheetJS and ExcelJS. Your spreadsheets, formulas, and data never leave your device — verified by zero outbound network requests during processing.