Is this GitHub-flavored Markdown?

Yes. The output uses the standard pipe-and-dash table syntax with colon alignment markers that GitHub, GitLab and most Markdown renderers understand.

How does column alignment work?

The divider row uses colons — left puts no colon, center wraps the dashes in colons, and right adds a trailing colon, matching the GitHub-flavored Markdown spec.

Is my data uploaded anywhere?

No. The table is built entirely in your browser with JavaScript, so your content never leaves your device.

Markdown Table Generator

Build aligned Markdown tables from a simple grid.

Generate Markdown tables in your browser

Set the number of columns, name each header, choose left, center or right alignment per column, then fill the grid. The tool outputs clean, padding-aligned GitHub-flavored Markdown you can drop straight into a README, issue, wiki page or any Markdown document.

Everything runs locally in your browser — nothing is uploaded, so it is safe for private notes and internal documentation.