CSV Cleaner & Duplicate Finder — Soluvanto

Clean CSV lists, find duplicate rows by chosen columns and export a reviewed copy with change reports.

Clean lists. Clear changes.

What it does

• Trim whitespace, remove blank rows and choose comma, semicolon or tab output.

• Find duplicates by selected columns; optionally ignore case and keep the first or last row. Empty keys stay flagged.

• Review groups, changed cells and removed rows before export. Finding duplicates does not delete them by default.

• Download cleaned CSV, before/after changes, duplicate groups, removed-row reports and a settings summary.

Before you buy

One UTF-8 CSV/TXT: 10 MiB, 20,000 data rows, 200 columns and 500,000 cells including headers. Export XLSX as CSV first. Named, unique headers required. Output capped at 50 MiB.

Exact matching after your chosen cleaning rules; no fuzzy matching, email verification or record merging. Optional formula-text protection can also affect negative numbers; reports always use protection. Keep the source: reports are not an automatic undo.

Included · US$5

English downloadable HTML tool, guide, license and synthetic examples. One-time purchase; no subscription or activation. Processing stays in the tab; originals stay unchanged. No file uploads or telemetry by the tool.

Tested in Chromium on Windows via local HTTP. Direct offline opening and other browsers/OS have not been independently verified.

Free sample output available; it does not include the tool.

Built with generative AI assistance and checked with automated/interface tests. Small tools. Simpler tasks.

Support: https://payhip.com/Soluvanto/contact