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Understanding Dimensions

MapToPoster outputs images at 300 DPI (dots per inch) for high-quality printing. The --width and --height flags specify dimensions in inches, which are then rendered at this resolution. Formula: pixels = inches × 300 DPI
All dimension values below are in inches to be used with -W (width) and -H (height) flags.

Social Media Formats

Instagram

Facebook & Twitter

Desktop Wallpapers

HD and 4K Displays

The maximum dimensions are 20 × 20 inches (6000 × 6000 px). Values exceeding this limit are automatically capped.

Mobile Wallpapers

Phone Screens

Standard Paper Sizes

For print, always use the default PNG format at 300 DPI for best quality. Alternatively, use --format pdf or --format svg for vector output that scales infinitely.

Custom Print Sizes

Quick Reference Table

All common use cases in one place:

Aspect Ratio Guide

Choose dimensions based on your intended display:

Vector Output for Printing

For professional printing or scaling flexibility, use vector formats:
Vector formats (SVG, PDF) ignore the DPI setting and can be scaled to any size without quality loss. Perfect for professional printing.

See Also

Basic Usage

Getting started with common commands

Command Reference

Complete command-line flag reference

Distance Guide

Choose the right map radius

Output Formats

PNG, SVG, and PDF format details