Markdown Table Generator

Markdown tables are ugly to write by hand. Every pipe character has to line up, column alignment is controlled by colons in the header separator row, and adding a column means editing every row. Most people end up reaching for a visual editor or a CSV converter — and that's what this tool is. Paste, type, or import tabular data, edit in a grid, and get perfectly aligned GitHub Flavored Markdown as output.

The editor looks and feels like a spreadsheet. Click any cell to edit, tab to move right, enter to add a new row, and drag column dividers to reorder. Header row controls let you set alignment for each column (left, center, right) — the tool handles the colon syntax in the separator row automatically. You can paste data directly from Excel, Google Sheets, or a CSV file and the tool parses it into the grid.

Output is always aligned. Many markdown table generators produce valid but visually messy output where columns wobble. This generator pads every cell with the right number of spaces so the markdown source itself looks clean when you read the raw file. That matters for pull request reviews and anyone who reads the repository without rendering the markdown first. When you copy, you get a block that renders correctly on GitHub, GitLab, most static site generators, and every popular markdown editor.

GitHub Flavored Markdown (GFM) tables are a superset of the pipe-table convention used in a few popular markdown dialects. A minimal table has a header row, a separator row using dashes and optional colons for alignment, and one or more body rows. Pipes at the start and end of rows are optional, cells are separated by pipes, and the separator row uses :--- for left alignment, :---: for center, and ---: for right.

Most renderers are forgiving about spacing, but the specification does require at least three dashes per separator cell and one pipe between cells. Escape a literal pipe inside a cell with a backslash (\\|) or HTML entity (|). Newlines inside cells are not supported in GFM; use <br> for a line break in a cell on GitHub, or restructure with separate rows.

This tool aligns output visually by computing each column's maximum content width and padding every cell to that width. That makes the raw markdown readable in any monospace editor and diffs cleanly in pull requests. When you import CSV or paste from a spreadsheet, the tool preserves the column structure, escapes pipes, and trims outer whitespace. Export is pure ASCII-compatible markdown with no funky HTML fallbacks, so the same output works on GitHub, GitLab, Bitbucket, Docusaurus, MkDocs, Hugo, and every markdown editor that supports tables.

Writing markdown tables by hand is tedious and error-prone. Dedicated markdown editors (like Typora or Obsidian) have table editors but lock you into their app. Browser-based CSV-to-markdown converters handle import but not iterative editing. This generator is a full visual table editor: paste, edit, align, and copy — all in one place, with output that aligns cleanly in the source file so your READMEs and docs look good whether rendered or read raw.