CSV to Markdown Quality Checklist
Test structure, meaning, escaping and the destination renderer before publishing a converted CSV table.
Use a deliberately awkward sample before converting a large CSV export into Markdown.
Define the destination
Identify the renderer that will publish the table. GitHub, documentation systems and minimal Markdown parsers do not necessarily implement tables identically.
Build five diagnostic rows
Include an ordinary record, an empty value, a quoted comma, a Unicode character and the most difficult real value expected. This small fixture exposes parsing and escaping decisions before they affect hundreds of rows.
Check shape
Count source headings and output columns. A row with a different column count should be investigated rather than silently padded without understanding why.
Check meaning
Compare every diagnostic cell, including leading zeroes, dates and identifiers that spreadsheet software may reinterpret. Conversion changes format; it should not invent types.
Check disclosure
Remove confidential or unnecessary columns before pasting. Browser-only processing reduces transmission, but it does not make an untrusted device or browser extension safe.
Accept the result
Preview in the target renderer, keep the sample with the change and manually inspect a selection from the beginning, middle and end of the full result.