How do I align columns in a Markdown table?

Column alignment in Markdown is controlled by colons in the separator row. A colon on the left (`:---`) means left-align. A colon on the right (`---:`) means right-align. Colons on both sides (`:---:`) means center-align. Most Markdown renderers — GitHub, GitLab, VS Code previews, Obsidian — respect these alignment markers. The formatter lets you set alignment per column and writes the correct separator syntax automatically.

Can I convert a CSV or spreadsheet into a Markdown table?

Yes. Copy your data from a spreadsheet or CSV, paste it into the formatter, and it will detect the delimiter and structure the output as a valid Markdown table. Tab-separated data from Excel or Google Sheets pastes cleanly. For CSV, paste the raw comma-separated text and the formatter handles column detection. This is significantly faster than building the pipe syntax by hand, especially for tables with more than three or four columns.

Does Markdown table syntax work on GitHub, GitLab, and other platforms?

Yes — pipe table syntax is supported by GitHub Flavored Markdown (GFM), GitLab Markdown, Obsidian, Notion (import), Ghost, Hashnode, VS Code's Markdown preview, and most static site generators including Jekyll, Hugo, and Docusaurus. It is not part of the original CommonMark spec but has become a near-universal extension. If a platform renders Markdown at all, it almost certainly supports pipe tables.

Does the formatter send my data to a server?

No. The entire formatting process runs in your browser using JavaScript. Your table data — whether it contains internal project names, API details, or anything else you'd rather keep private — never leaves your device. Close the tab and nothing persists. This matters for developers working with sensitive documentation who can't paste data into server-side tools.

⚡ Speed Up Workflow⚡ Workflow

Markdown Table Formatter

Paste Messy Data, Get Clean Aligned Tables Instantly

Messy Source Buffer

Pretty-Printed Table

Awaiting pretty-printing execution...

Solving Markdown Alignment Pain

Writing Markdown tables by hand is one of those tasks that sounds simple until you try it. The pipe syntax is straightforward for a two-column table with short values. Add a third column, a longer cell value, or a row that needs editing later, and suddenly the raw source is an unreadable wall of unevenly spaced pipes that nobody wants to maintain. Most editors don't auto-format it. Fixing it manually means re-padding every cell in every row.

This Markdown table formatter takes either raw data — tab-separated from a spreadsheet, CSV text, or loosely typed rows — or existing unaligned Markdown, and outputs clean, padded, correctly aligned table syntax ready to paste into a README, docs file, wiki page, or blog post. It handles the spacing, the separator row, and the alignment markers automatically. It runs 100% in your browser with no sign-up and no data sent anywhere.

Quick Overview

Format instantly — paste unaligned Markdown or raw tabular data and get clean pipe tables in one click.
Broad delimiter support — handles tab-separated sheet copies and comma-separated CSV lists.
Integrated alignment selectors — easily configure left, right, or center mapping for each column.
Uniform spacing — re-pads every cell cleanly so code editor sources stay fully legible.
100% Client-Side privacy — processing runs entirely locally. Your datasets never transit our network.

Operational Workflow

PASTE YOUR DATA

Drop in your unaligned Markdown table or raw tab/comma-separated rows from spreadsheets.

CHOOSE ALIGNMENT

Configure left, right, or center mapping per column to write correct separator colon syntax.

RUN THE FORMATTER

Normalizes column padding dynamically so every cell and column pipe lines up.

COPY THE GRID

Click to copy the clean, pretty-printed Markdown table and paste it straight into your docs.

When to Use This Tool

README Command tables

Quickly format options, parameters, and rate limit tables for open-source repositories on GitHub and GitLab.

Editing Existing Sheets

Paste in legacy Markdown tables, easily make modifications, and extract perfectly re-aligned code segments.

Comparison & Wiki blocks

Turn raw typed comparison notes into elegant aligned table components for blogs and wikis.

Key Features

Multi-Format delimiter

Instantly parses tab-separated Sheets, CSV comma tables, and loose pipe rows.

Auto Alignment colon logic

Translates alignment settings into standard `:---` and `:---:` separator markers.

Human Readable source

Applies whitespace padding to cells so raw plain text is simple to edit.

Offline Sandbox privacy

Runs locally on your device in pure JavaScript. No server transactions.

Real-World Case

"Maintaining API Endpoint Tables at Scale"

Leo, a backend engineer at a mid-sized SaaS company, maintains the internal API documentation for his team on a GitHub wiki. Every time the team adds a new endpoint, he has to update a reference table listing the method, path, auth requirements, and rate limit. The table had grown to 24 rows. Editing it meant manually counting spaces to keep the pipes aligned. He started pasting the table into the Utilx formatter, making his edit in the input field, and copying the re-aligned output back. The whole process takes about 30 seconds, saving hours of manual formatting.

Ecosystem Support

TABLE GENERATOR MARKDOWN PREVIEWER README GENERATOR

FAQs

A Markdown table uses pipe characters (|) to separate columns and a row of dashes (---) to separate the header from the body. A basic three-column table looks like this: | Name | Role | Status | |------|------|--------| | Alice | Dev | Active | The column widths don't need to be equal for the table to render correctly, but aligned columns make the raw Markdown far easier to read and edit. This formatter handles the padding automatically.

Data & Docs