See exactly which rows will be kept or removed before processing. SheetCleaner real-time preview feature lets you validate deduplication rules instantly with color-coded results.
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Learn how to deduplicate across multiple worksheets, supporting multi-column combinations and smart strategies, handling millions of records.
Find and correctly merge records that look different but are actually the same—covering case, whitespace, symbols, full/half-width, email aliases, phone country codes, approximate spelling, etc.
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Learn how to use SheetCleaner built-in charts to analyze your data cleaning results. Understand data composition with pie charts and identify which columns have the most duplicates using bar charts.
Learn how to deduplicate across multiple worksheets, supporting multi-column combinations and smart strategies, handling millions of records.
Comprehensive guide to Excel deduplication retention rules: keep first, keep latest, keep max value, multi-tier rules. Provides SheetCleaner, Power Query, and Excel 365 formula implementations with complete examples and best practices.
Professional guide for marketing email list cleaning: handle case differences, Gmail dot rules, +alias tags. Supports complex scenarios like ZHANG.SAN@EXAMPLE.COM vs zhangsan@example.com, alice+ads@gmail.com vs alice@gmail.com.
