Markdown Table Generator

| Column 1 | Column 2 | Column 3 |
| --- | --- | --- |
|  |  |  |
|  |  |  |

A Markdown table generator should keep the grid and source in agreement

Pipe-style Markdown tables look simple until a cell contains its own pipe, a line break or text that resembles formatting. This generator treats the editable grid as a rectangular set of strings and derives the Markdown from that state. The header separator, alignment markers and escaping therefore cannot drift away from the cells you see. Change a value, move a row or align a column and the complete source is regenerated by the same fixed rules.

The first grid row is the header. Each column can use no declared alignment, left, center or right alignment. Those choices become ---, :---, :---: or ---: in the separator row. Sorting is stable: equal values retain their prior order, while digit runs sort naturally, so item 2 comes before item 10. Undo restores the exact previous table snapshot, including its cells, order and alignments.

Paste, CSV, TSV and existing Markdown remain text

Paste rows copied from a spreadsheet or open a local CSV, TSV, text or Markdown file. The importer never converts a cell to a number, date or boolean. A postal code such as 007 remains three characters, and quoted CSV fields can retain a real line break. Ragged input is padded to a rectangle instead of shifting later values into the wrong column. Empty and trailing cells remain visible positions in the table.

This route is a manual table workbench, not a workbook converter. For multiple Excel sheets, native workbook reading and sheet selection, use Excel to Markdown. This page deliberately does not pretend that renaming an .xlsx file makes it text. It also does not edit the prose around a table; the Markdown editor is the destination for a complete document.

Merged HTML cells require a visible choice

Rich clipboard data from a webpage can contain real rowspan and colspan cells. Markdown has no equivalent. When a pasted HTML table includes those spans, the import pauses before changing the grid. You decide whether every covered position repeats the visible merged value or only the top-left position keeps it. The status receipt states the policy and number of source merges. The generator never invents new merges, and scripts, styles and remote images in pasted markup are not inserted into the page.

If your actual job starts from HTML source or a table on another open page, use HTML table to CSV. That tool previews original spans and handles page collection. Here rich HTML is only an intake path for the visual Markdown grid, keeping the route focused on creating and revising the pipe table itself.

Literal escaping is the safe default

A cell containing an asterisk, bracket, backtick or pipe is usually data, not an instruction to style or link part of the table. The exporter escapes Markdown punctuation by default and encodes literal angle brackets, so pasted text cannot become an image request or HTML element in the preview. A real line feed inside a cell becomes a generated <br> in the output. Text that literally says <br> is encoded as text instead, so the two cases remain distinguishable when this generator reads its own export again.

This conservative policy favors portable data over authored inline formatting. If you want a deliberately bold phrase or link, finish the table here, then make that explicit source edit in the full Markdown editor. The workbench does not silently guess which punctuation was intended as content and which was intended as syntax.

Large previews are clipped, exports are not

A browser can serialize far more cells than it can comfortably display as thousands of live text areas. The editable grid therefore limits its rendered preview, and the source preview limits displayed characters. Neither limit changes the table state. Copy complete Markdown and Download complete .md always serialize every row and column. A large table gets a memory warning rather than a size rejection, because the practical risk is that a tab runs out of memory—not that a valid table suddenly becomes invalid.

All parsing, editing, sorting and export happen locally in this browser tab. No table values are uploaded, no account is required and no model decides how to rewrite the data. The same grid and settings produce the same bytes, which makes the downloaded file suitable for code review and repeatable documentation builds.