CSV & Excel Deduplicator & Splitter

Remove duplicate rows from massive CSV/Excel sheets and split large files into smaller chunks with zero server uploads.

100% In-Browser Data Processing

Your CSV and Excel datasets are parsed, cleaned, deduplicated, and split completely in your browser RAM with zero server transfers.

CSV & Excel Deduplicator & Chunk Splitter

Deduplicate millions of records by custom primary keys or full rows, filter data, and split massive sheets into smaller chunks bundled in a single ZIP.

Drag & drop your file here, or browse

Max file size: 100MB (Free Tier)

Handles up to 500000+ rows directly in browser memory • 100% Secure

100% Private• Instant