What This Tool Does

This tool transforms raw CSV data into neatly aligned text tables using monospace formatting. Each column gets padded to fit the widest value, creating clean vertical alignment. The output works in plain text files, code comments, documentation, or terminal displays.

Example Output

name       | age | city
-----------|-----|------------
Alice      | 30  | New York
Bob        | 25  | Los Angeles
Charlie    | 35  | Chicago

Columns are separated by pipes and aligned for readability. Headers are underlined with dashes. This format is easy to read in any text editor or terminal.

When to Use Pretty Print

README documentation: Show sample data or configuration options in your GitHub README as a clean table instead of raw CSV.

Code comments: Document expected data formats or provide examples in source code comments where HTML tables won't render.

Terminal output: Generate formatted tables for CLI tools or scripts that output to console.

Email and chat: Share data snippets in plain text emails or Slack messages where formatting is limited.

Reports and specs: Include data examples in technical specifications or plain text reports.

Debugging: Quickly visualize CSV data structure when troubleshooting parsing issues.

How It Works

The tool scans all values in each column to find the maximum width. It then pads every cell in that column with spaces so values align vertically. Headers get an underline row made of dashes.

Column width is calculated as the longest value or header text, whichever is greater. This ensures nothing gets cut off and tables remain readable.

Use Cases

Developer documentation: A backend developer includes API response examples in a README. Pretty-printed tables show the data structure clearly without requiring readers to parse raw CSV.

Database schema docs: Document table contents or sample records in plain text format that works in any editor.

Configuration examples: Show valid configuration values in a formatted table within a config file comment.

Data quality reports: Generate plain text reports showing sample rows from each data source for stakeholder review.

Limitations

Wide tables: Tables with many columns or long text values create very wide output that may not fit in your editor or terminal.

Monospace fonts required: Alignment only works when viewed with a monospace font (Courier, Consolas, etc.). Proportional fonts will misalign columns.

No word wrapping: Long values stay on one line. Very long cells make the table extremely wide.

Frequently Asked Questions

Can I customize the table style?

This tool uses a simple pipe-and-dash format. For custom borders or styles, you'd need a different tool or manual formatting.

Does this work with Unicode characters?

Yes, but column width calculation may be off for some Unicode characters. Emoji and certain Asian characters display as different widths in different fonts, which can cause slight misalignment.

Can I export to Markdown tables instead?

For Markdown-formatted tables, use the CSV to Markdown tool. That generates GitHub-flavored Markdown table syntax with alignment markers.

What's the maximum file size?

Works best with files under 10MB or 50,000 rows. The tool needs to scan all data to calculate column widths, so very large files may be slow.