← MDifying document to Markdown converter
Each sheet in an .xlsx workbook becomes a Markdown table with the sheet name as its heading, so a multi-sheet workbook arrives as one readable document rather than a wall of comma-separated values.
Convert a file now — it is free and runs in your browser
Pasting a spreadsheet screenshot into a chat forces the model to read pixels. A Markdown table is text: the column headers stay attached to their values, the numbers stay exact, and nothing depends on image quality.
Cell values as displayed, one table per sheet. Formulas are represented by their computed result — the value you see in the cell — not by the formula text. Charts, images, pivot tables, conditional formatting and cell colours are not part of Markdown and are dropped.
Very wide sheets stay readable as Markdown but become hard to read for a person; if a table has dozens of columns, consider trimming it before converting.