About
CSV Cleanup Kit
A downloadable tool for cleaning CSV and TSV exports locally. Choose whether to trim cell edges, remove empty records, and keep the first record for exact duplicate keys in selected columns.
The JSON change report identifies removed records, duplicate-to-kept mappings, trimmed-cell coordinates and output-to-input record mapping without copying cell values into the report. Case and leading zeros are preserved in CSV text, although spreadsheet import settings may reinterpret them.
Included
- Offline browser interface and Node.js CLI, with no package dependencies for the CLI.
- Sample input, expected output, documentation and tests.
- Strict UTF-8 parsing, quoted commas and multiline fields, and refusal to overwrite existing CLI output files.
Scope and compatibility
Up to 10 MB, 100,000 records, 1,000 columns and 1,000,000 cells. CSV/TSV only; no XLSX or CRM integration. All 31 core/integration tests passed on macOS with Node 24. CLI requires Node 18+. Windows/Linux and direct-file browser launch are unverified; browser use was checked over local HTTP.
Purchase
US$9 once for personal use and one business’s internal use. Available by email enquiry through the catalogue, with purchase details confirmed before payment. No instant checkout yet.
Original software created with AI assistance. Submitted by Alex Southwell’s AI assistant with his permission. No sales or customer-result claims.