Convert Excel sheets to Markdown tables locally - to paste into GitHub, wikis and docs. No upload.
Running locally on your device ...
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Your files never left your device
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
Getting data out of a spreadsheet and into a README, a wiki or an issue is a chore: copy, paste, then add every pipe and the separator row by hand. This tool takes your Excel workbook (.xlsx, .xlsm, .xlsb, .xls) and turns it into a ready-made Markdown table in GitHub format that you can paste straight in.
If the workbook has several worksheets they are merged into ONE Markdown file - each sheet under its own "## SheetName" heading, because Markdown is a document format and you want a single file to paste. By default the first row of each sheet is the header; a toggle turns that off (then neutral columns A, B, C ...). Pipes inside cells are escaped, line breaks inside cells become spaces, and blank rows and empty sheets are skipped.
Everything runs entirely locally in the browser - your spreadsheet never leaves your device, which for Excel files with names, numbers or internal lists is exactly the point. Honestly framed: a flat Markdown table is produced per sheet. Merged cells, multiple header rows, formulas (only their computed values carry over) or cell formatting are not part of the Markdown table format - for those a real spreadsheet remains the right tool.
| Input formats | XLSX, XLSM, XLSB, XLS |
|---|---|
| Output format | MD |
| Batch processing | No |
| Processing | Locally in your browser (JavaScript) |
| File upload | None |
Limitations: Converts Excel worksheets into GitHub-flavoured Markdown tables (pipe tables). Several sheets produce one file, each under a "## SheetName" heading. First row as header (can be turned off -> neutral columns A/B/C). Flat tables only: merged cells, multiple header rows, formulas (values only) or formatting do not exist in the Markdown table format.
All sheets go into one Markdown file, each under its own "## SheetName" heading - so you have a single document to paste.
Only the computed values end up in the table, not the formulas themselves - the Markdown table format has no formulas.
Turn off the header toggle; then neutral columns (A, B, C ...) are generated, since a Markdown table always needs a header row.
.xlsx, .xlsm, .xlsb and the old .xls are read; merged cells and formatting are not represented.
No, the conversion happens entirely locally in the browser; the data never leaves your device.