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Markdown Table Builder (GFM)

Visual editor for GitHub Flavored Markdown tables. Add/remove rows/columns, left-center-right alignment, pretty mode auto-balances widths.

All tools

0 rows × 0 columns

Pretty (balanced widths)

Markdown

Editor for markdown tables — GFM standard. Pretty mode auto-aligns column widths so the .md file reads cleanly on GitHub. Pipes inside cells are escaped automatically.

Markdown table syntax (GFM)

GitHub Flavored Markdown (GFM) is supported almost everywhere: GitHub, GitLab, Notion, Obsidian, ChatGPT, Claude, Discord. Syntax:

| Header 1 | Header 2 | Header 3 |
| :------- | :------: | -------: |
| Left     | Center   | Right    |
| cell     | cell     | cell     |

First row: header, automatically bold.
Separator row: :--- (left), :---: (center), ---: (right).
Pipes inside cells: escape with \\|.
Line breaks inside cells: use <br> (HTML), NOT \\n.

When to use it

Docs / README: comparison tables, API specs, feature lists.
GitHub issues / PRs: test data, screenshot diffs in table form.
Notion / Obsidian: paste tables from this tool into your note system.
Blogs / Docs sites: Astro/Hugo/Docusaurus render markdown tables natively.
LLM prompts: structured table input helps the model parse better than long JSON.

Pretty vs Compact mode

Pretty mode (default): balanced column widths via padding — the .md file looks great in any text editor.
Compact mode: no padding — denser source. GitHub renders both identically.

Use Pretty for READMEs and docs; Compact for LLM prompts (saves tokens).