Markdown Table Formatter & Aligner

Markdown Table Formatter & Aligner

Format and align Markdown tables with perfectly padded columns. Paste a messy Markdown table and instantly get clean, aligned output with equal column widths. Includes a rendered HTML preview, export to CSV/HTML/JSON, and validation for common table issues. Handles multiple tables in one input.

使い方

Paste your Markdown table into the input area. The formatter instantly aligns all columns to equal widths, padding cells with spaces so pipe characters line up perfectly. Configure column alignment (left, center, right, or auto-detect), padding style (spaced or compact), separator style, and whether to include outer pipes. View the formatted output, check the HTML preview, and export as CSV, HTML table, or JSON.

特徴

• Column Alignment — Auto-detect alignment from separator markers (:—:, :—, —:), or force all columns to left, center, or right alignment. Alignment markers are preserved in the formatted output.
• Perfect Padding — Each column is padded to the maximum width of its content, so all pipe characters align vertically. Choose spaced padding (| value |) or compact (|value|).
• Separator Styles — Minimal dashes (—) or full-width separators that match the column width with dashes for maximum visual alignment.
• HTML Preview — Rendered preview showing exactly how the Markdown table will look when published. Helps verify formatting before copying.
• Multi-Table Support — If your input contains multiple tables mixed with other text, each table is formatted independently while surrounding text is preserved.
• エクスポートオプション — Copy as CSV (properly quoted), HTML table, or JSON array of objects (headers as keys). Each with a copy button.
• Sort by Column — Optionally sort rows by any detected column header.
• 検証 — Detects inconsistent column counts, missing separator rows, and empty cells. Shows column and row counts.

Markdown Table Syntax

Markdown tables use pipes (|) to separate columns and dashes (-) for the separator row between headers and data. Alignment is controlled by colons in the separator: :--- (left), :---: (center), ---: (right). Example:
| Name | Age |
|:-----|----:|
| Alice | 30 |