What Is DPI in Packaging?

Having product packaging with vibrant, sharp printing is a main priority for every brand. Yet there are circumstances where the images look fine on the screen but are completely different on product packaging. Well, this will not happen when you understand which DPI to use. What is DPI in packaging, what makes it ideal, and how to use DPI for better printing quality? Let’s explore all the essentials about DPI and how it affects printing quality!

What Is DPI?

DPI stands for Dots Per Inch. In printing terms, it refers to the number of ink droplets an inkjet printer produces per inch when printing a digital image. 

Simply put, the higher the dots per inch, the more closely packed the ink droplets are. As a result, the more detail the image will have when printed.

Speaking of custom packaging boxes, 300 DPI is considered a good resolution for images. However, some images are printed at 600 DPI to achieve better results. 

When to Use DPI?

As we mentioned, 300 DPI is a benchmark in product packaging. Alternatively, you can choose a lower or higher DPI based on your product’s needs and packaging requirements. 

When to use 300 DPI

• Standard product labels: This resolution provides the best balance between image quality and file size for most commercial packaging.
• Close-up viewing: For any packaging that customers examine up close, 300 DPI ensures sharpness and prevents pixelation.
• Brand materials: When your logo or graphics need to look professional and high-quality to represent your brand, 300 DPI is a reliable standard. 

When to use lower DPI

• Shipping and industrial labels: Use 203 DPI for basic barcodes and shipping boxes, labels, or stickers where intricate designs are not required. 
• Large-format printing: If you are printing large-scale packaging, you can use a lower DPI because the viewing distance is greater.

When to use higher DPI

• High-end or detailed products: For premium packaging with very small text, intricate graphics, or high-resolution images, 600 DPI or higher can provide superior clarity.
• Small labels: For tiny labels with detailed text, 600 DPI may be necessary for readability.

DPI vs PPI: The Main Difference

Another term used in packaging design is PPI. The higher the PPI, the smaller the pixels are, creating a sharper image for customers to appreciate. 

What Is PPI?

PPI is an abbreviated form of Pixels Per Image. You will find it mainly used for digital images on a screen. 

An important thing to note is that PPI resolution affects how a digital image looks on a web page. A higher PPI (pixels per inch) means better image quality, with smaller pixels that create both clarity and depth. Meanwhile, high-resolution images contain larger pixels in fewer numbers (resulting in a more pixelated image). High-resolution images with a greater number of smaller pixels produce a crisp, smooth digital image. 

Sounds difficult to understand? To make it simple, a lower PPI means the pixels are larger, and thus they will not provide clarity or sharpness. 

When to Use PPI?

You should use 300 PPI for images to ensure a clear and high-quality print, as PPI is the measure of a digital image’s resolution.

When to use different resolutions?

• 300 PPI: This is the industry standard for high-quality, close-up print materials such as product packaging, magazines, and photo books.
• 150–200 PPI: Best for large prints or posters viewed from a distance, where the viewer’s eyes compensate for the lower resolution.
• 72 PPI: Only for web or digital use, as its resolution is too low for printing and will appear pixelated if used for custom packaging.

Now back to the question: What’s the difference between DPI and PPI?

The main difference between PPI and DPI is that PPI (pixels per inch) refers to the resolution of digital images and those displayed on computer monitors, while DPI (dots per inch) refers to the resolution of printed images.

While DPI relates to the number of ink dots per inch, PPI refers to the number of pixels per inch in a digital image on a screen. Moreover, while DPI uses CMYK printing, PPI uses the RGB (Red, Green, Blue) color model for screens. This means that an image may look great on your monitor (high PPI), but it can print poorly if it’s not set to the correct DPI for your printer.

Check out the table below for a better understanding of the differences between DPI and PPI. 

What Makes DPI Ideal for Custom Packaging?

From standard folding cartons to luxury rigid boxes, DPI is the ideal technique to ensure your images, text, brand logo, and other graphics look captivating. 

Here’s why DPI is the ideal standard for custom packaging. 

Vibrant, High-Quality Output

300 DPI ensures that images, text, and graphics appear sharp and clear on your printed packaging. 

Optimized File Sizes

Higher DPI provides a good balance, creating manageable file sizes that are easy to work with and will never cause unnecessary delays in the printing process.

Consistent Results

DPI delivers consistent quality across various printing materials, whether it’s a small label on your shipping boxes or a larger box design.

What to Consider When Choosing the Right DPI? 

Mostly, 300 DPI is considered a good resolution for various types of boxes that need to print images and texts with sharp results. For example, images and texts on food boxes need to look vibrant while being informative. Alternatively, customers will be more likely to pick up cosmetics in cosmetic boxes that are printed beautifully. 

However, there are some considerations when choosing the right DPI. What are they? 

• Matches the human eyes: Use 300 DPI as it’s generally the limit of the average human eye. 
• Avoids pixelation: Using images below 300 DPI can result in blurry or pixelated output when printed, which negatively impacts your brand’s professional appearance.
• Industry standard: 300 DPI has been a long-standing standard for print, making it a reliable and widely accepted resolution for packaging design.
• File Handling: Resolutions above 300 DPI require more storage space, more processing time, and can hinder production at some point. 

Practical DPI Tips for Better Printing Quality

Whatever DPI resolution you choose, there might be a chance that the printed result is not what you’ve expected. To avoid this, consider the practical DPI tips below for better printing quality. 

Focus on the Paper & Ink Quality

Once you’ve finalized the design images, you still have to focus on ink and paper quality. Remember, every printer has a different capacity, so the images may appear different. 

For example, when printing in full color, tiny dots of four ink colors in CMYK (Cyan, Magenta, Yellow, and Black), make sure you overlap each other on the paper to form many different shades and hues. Known as CMYK printing, these four inks can combine to create around 16,000 colors. 

Don’t forget to also discover more about CMYK and PMS in our detailed blog. 

Customers’ Viewing Distance

The closer you are to the image, the easier it will be to see major details. Speaking of custom packaging boxes, you should consider higher DPI, as customers will be picking them up and analyzing them. 

The Size

Yes, the surface size of your printed design significantly affects the print quality. For example, 150-300 DPI is best suited for printing vibrant images on minimalist packaging. On the other hand, when you need something larger, a higher DPI will be ideal.

Final Thoughts

Indeed, there are circumstances where the images look fine on the screen but are completely different on product packaging. Well, this will not happen when you use the right DPI. The higher the dots per inch, the more closely together the ink droplets are packed. As a result, the more detail the image will have when printed.

DPI is the ideal standard for custom packaging as it offers vibrant output, optimized file sizes, and consistent results. 

Hopefully, the post above helps you understand everything about DPI and use it properly on your custom packaging. 

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