Markdown Table Generator

Build and copy a table

1. Enter headings and body cells. Add, remove or move rows and columns, and choose each column's alignment. The editor shows ten body rows per page; the generated table includes them all.
2. For tab-separated data, open Import TSV, paste into its draft field and choose whether the first record is the header. Replace table applies a complete valid import; editing the draft alone leaves the current table unchanged.
3. Check Generated Markdown and the literal-text preview, then use Copy Markdown. Invalid or composing grid data withholds output. Clear table returns to the empty starting grid.

Literal cells and GFM structure

The output has one header row, a delimiter row and zero or more body rows. Default, left, center and right alignment use the delimiter entries ---, :---, :---: and ---:. The header is not counted as a body row.

Every original ASCII space and punctuation character becomes a decimal character reference. The stated admitted Unicode whitespace and BOM are encoded too, preventing boundary trimming. For example, a|b becomes a|b. This keeps pipes, emphasis, code, links, HTML and reference-looking input as literal cell text under the specified GFM rules.

The importer uses a stated quoted TSV grammar. Tabs separate fields and CR, LF or CRLF separates records outside quotes. A doubled quote inside a quoted field becomes one quote. Quoted tabs or line breaks are still rejected because cells must be single-line.

Generated source has outer pipes, no display-width padding and one final line feed. Character references make it longer. Use a blank line before the table when embedding it in a document; the copied text does not add a leading blank line.

Structure and import examples

With Key, Label and Qty headings, the cells a|b, <tag> and 2 remain three separate literal cells. A second row can contain an empty cell, literal backticks around u and the string 0; zero is not treated as missing data.

Moving Qty before Key moves every value and its right alignment together. Moving a body row changes only body order. Pagination changes which rows are editable on screen, while Copy always includes the complete table.

Importing ID and Value followed by 001 and =2+3 preserves those strings. A short or long record is a ragged-table error, so replacement never pads missing cells or discards an extra value.

Fidelity and size limits

This is a literal-text generator, not inline Markdown or HTML authoring. GFM pipe-table support is required; other renderers may differ. Ordinary HTML and CSS can collapse the visual width of spaces even when cell text content is retained.

The grid allows one to eight columns, zero to fifty body rows, up to 200 UTF-16 units per cell and 50,000 across cells. These are not byte or visible-character counts. Unsupported controls, line breaks and lone surrogates are invalid.

The TSV importer removes one leading BOM and ignores exactly one final record separator. Other empty records and trailing empty fields remain data. It requires a rectangular table and does not promise compatibility with every spreadsheet clipboard format.

The local preview uses plain text cells and selected alignment. It is a reading aid, not a certificate from the destination renderer. There is no rich formatting, merged cells, formula evaluation, CSV or Excel file import, saved history or share link.

Local table editing without saved history

The tool adds no upload, automatic clipboard read, saved table, input-bearing link or telemetry containing your cells. Existing site services and extensions are outside a universal privacy promise. Copy is explicit, and reload or a new document starts an empty grid.