CSV Integrity Lab — Research Preview

Inspect CSV risks and export an Excel workbook that preserves every value as text. Local processing only.

Keep identifiers as identifiers when moving CSV data to an Excel workbook. CSV Integrity Lab inspects CSV files for: • Leading zeros, such as 00123. • Integers with 16 or more digits. • Formula-like strings beginning with =, +, - or @. • Date-like strings that spreadsheet software could reinterpret. • Rows with inconsistent numbers of fields. Choose an encoding and separator, inspect examples with row and column positions, then export an XLSX workbook with every cell stored as text. Values are not automatically corrected. Formula-like values are stored as text rather than executable formulas. Supported encodings: UTF-8, Windows-1252, Windows-1258 and UTF-16 LE. Supported separators: comma, semicolon and tab. Files are processed locally on your device. This preview does not upload CSV contents, use analytics, or require an account. Limits: • 2 MB per file. • 10,000 rows, 200 columns and 200,000 cells. • 32,767 UTF-16 code units per cell. • Up to 100 displayed risk examples. • A 15-second processing timeout. Malformed data, invalid encoding and unsupported control characters stop processing. The tool cannot recover digits already lost in the source. Exported cells remain text, including numbers and dates. Keep your original file and compare the results. This is a free research preview. No payment or license activation is required in this build. Website: https://tools.gnouden.com/ Web demo: https://tools.gnouden.com/demo/ Support: gnouden@gmail.com Privacy Policy: https://tools.gnouden.com/privacy.html