See inserted and removed rows realigned without a cascade of false changes.
xlLens
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BasicSmartTable80 changes
Key column✓ SKUIDEmail
PreviousA-100Desk$180B-200Chair$80C-300Lamp$45
CurrentC-300Lamp$45B-200Chair$92A-100Desk$180
✓ B-200 · Matched by key · row 2 → 2
Key-based Table mode
Match reordered business records by SKU, ID, email, or another selected key.
Outside the renderer
Parsing and comparison run in an Electron utility process. The renderer requests bounded pages instead of materializing an entire worksheet.
Memory controls
XLSX and XLSM are streamed by the native engine instead of being materialized as full workbook objects. Dense detailed changes spill to a private temporary JSONL file after 50,000 records.