prettier-plugin-compact-markdown-table

Forked from myl7/prettier-plugin-compact-markdown-table

Prettier plugin for compact markdown tables without column alignment

Resolves prettier/prettier#12074, prettier/prettier#14722, prettier/prettier#16954.

Features

• Compact tables: Reduce separators and avoid column alignment while preserving readable cell spacing by default.
• Save LLM tokens: A 5-column, 10-row table saves ~21% of table tokens and ~32% of characters with compact formatting.
• Fit character limits: Useful for submissions with strict character budgets, e.g., OpenReview rebuttals capped at 5000 characters.

Prerequisites

• Prettier >= 3.0.0

Get Started

Install the plugin alongside Prettier:

npm install @tofrankie/prettier-plugin-compact-markdown-table -D

Add the plugin to your prettier.config.js:

export default {
  plugins: ['@tofrankie/prettier-plugin-compact-markdown-table'],
}

Or import the default plugin object:

import compactMarkdownTablePlugin from '@tofrankie/prettier-plugin-compact-markdown-table'

export default {
  plugins: [compactMarkdownTablePlugin],
}

Then format as usual:

prettier --write "**/*.md"

Before:

| Name  | Age | City |
| ----- | --- | ---- |
| Alice | 30  | NYC  |
| Bob   | 25  | LA   |

After:

| Name | Age | City |
| --- | --- | --- |
| Alice | 30 | NYC |
| Bob | 25 | LA |

Config

tableLayout

| Value | Description | | :-- | :-- | | compact (default) | Compact layout with one space around each cell. | | compact-no-padding | Compact layout without cell padding. | | aligned | Pad cells to align columns (Prettier default). |

Set in prettier.config.js:

export default {
  tableLayout: 'compact'
}

Or pass via CLI:

prettier --table-layout aligned --write "**/*.md"

License

Copyright (C) 2026 Yulong Ming [email protected]

Apache License, Version 2.0