Photoshop Settings

Units & Rulers Preferences: Setting Your Design Foundation

These settings define the measurement system Photoshop uses for your rulers, text, and new documents. Correctly configuring your units and resolution is the first step in ensuring your work looks sharp on screens and prints accurately.

• Rulers: Pixels (Recommended for Web/UI)
• Type: Points
• Print Resolution: 300 Pixels/Inch
• Screen Resolution: 72 Pixels/Inch
• Point/Pica Size: PostScript (72 points/inch)

Under the Units Section

• 1. Rulers (Sets the primary measurement unit for your canvas)

• Pixels (Recommended): If you are a digital designer, setting your rulers to Pixels is essential for pixel-perfect accuracy.
• Inches/Centimeters: Choose these only if you are strictly a print designer working on physical layouts like posters or business cards.

Navigation: Edit > Preferences > Units & Rulers > Rulers

• 2. Type (Sets the measurement for your font sizes)

• Points (Standard): This is the industry standard for typography.
• Pixels: Some web designers prefer pixels to match CSS values exactly, but Points remains the most compatible across various design software.

Navigation: Edit > Preferences > Units & Rulers > Type

Under the New Document Preset Resolutions Section

• 3. Print Resolution: 300 Pixels/Inch (The industry standard for high-quality print)

When you create a new document intended for printing, Photoshop will default to this resolution. 300 PPI (Pixels Per Inch) is the minimum requirement for crisp, professional printing. Setting this higher than 300 is usually unnecessary and just creates massive file sizes.

Navigation: Edit > Preferences > Units & Rulers > Print Resolution

• 4. Screen Resolution: 72 Pixels/Inch (The standard for web and digital displays)

Most screens traditionally display at 72 PPI. While modern “Retina” or 4K displays have much higher actual pixel densities, 72 remains the baseline “logical” resolution for web assets and digital mockups.

Navigation: Edit > Preferences > Units & Rulers > Screen Resolution

Under the Point/Pica Size Section

• 5. PostScript (72 points/inch) (The modern digital standard)

There are two ways to calculate the size of a “Point.”

• PostScript (Recommended): Defines a point as exactly 1/72 of an inch. This is the standard used by modern computers, printers, and Adobe software.
• Traditional: Based on an older 72.27 points/inch calculation. Unless you are working in a very specific, old-school letterpress environment, PostScript is the correct choice.

Navigation: Edit > Preferences > Units & Rulers > Point/Pica Size

Pro Tip: Fast Unit Switching

You don’t always have to come to the Preferences menu to change your units. If your rulers are visible (Ctrl + R / Cmd + R), simply Right-Click anywhere on the ruler bar to instantly switch between Pixels, Inches, Millimeters, and Percentages on the fly.