Observed arrival · 2026-11-11

TidyColumns makes spreadsheet imports reusable

tidycolumns.com Visit website

Editorial interest 77/100 Selection signal · not a rating of the site

A browser-based tool for mapping CSV and Excel files into validated output formats, then saving those mappings as templates.

Landing page captured for the 2026-11-11 issue.

For: People preparing recurring CSV or Excel imports
Worth noticing: The stated limits are 10 MB for CSV/TSV, 5 MB for XLSX, 50,000 rows, and 500,000 cells.

Field notes

The workflow begins with an output template, then accepts CSV/TSV or XLSX input for column mapping, optional rules, validation, and export. The page lists limits of 10 MB for CSV/TSV, 5 MB for XLSX, 50,000 rows, and 500,000 cells, and says text identifiers and leading zeros are preserved. Guest templates live in browser storage, with a backup download offered because clearing browser data can remove them.

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