Question 1

How does this DPI checker work?

Accepted Answer

This DPI checker operates entirely within your web browser by reading the DPI metadata stored in your image file's binary data. For JPEG images, it detects the DPI by parsing the JFIF (APP0) and EXIF (APP1) sections embedded in the file. For PNG images, it looks for the pHYs chunk, which holds the DPI information. Since the tool works locally on your device, without uploading your file anywhere, it ensures your image stays private. For example, if you upload a 3000x3000 pixel PNG intended for a 10x10 inch print, the DPI checker will confirm if the DPI metadata matches 300, helping Etsy sellers prepare perfect print files safely and instantly on their own computer.

Question 2

Why does my image show 72 DPI?

Accepted Answer

Most digital tools default to 72 DPI because this was the original Macintosh screen resolution standard from 1984. Modern tools like Canva (free tier), Figma, and many web-based design platforms still export at 72 or 96 DPI by default. This does not mean your image is low quality. If the pixel dimensions are large enough for your target print size, you only need to update the DPI metadata to 300.

Question 3

Does this tool work with all image formats?

Accepted Answer

This DPI checker supports the two most common image formats used by print-on-demand creators: JPEG and PNG. These formats typically include standardized DPI metadata that can be read easily by browsers. Formats like WebP, TIFF, or more specialized ones often lack consistent or parseable DPI tags within the browser environment, so they default to 72 DPI in this tool. For instance, if you try to check a TIFF with your design for a phone case, the tool will show 72 DPI by default and notify you that it’s unsupported. The best practice is to convert unsupported files to JPEG or PNG before checking DPI to ensure accurate results.

Question 4

What DPI do I need for print-on-demand?

Accepted Answer

For print-on-demand products like mugs, phone cases, stickers, and apparel, a DPI of 300 is generally considered the industry standard to ensure high-quality prints without pixelation. For example, a 4500x4500 pixel image at 300 DPI will yield a crisp 15x15 inch print. Larger items like 24x36 inch wall art can sometimes use lower DPI, such as 150 to 200, because they are viewed from several feet away. However, to keep designs sharp and close to professional print quality, always aim for 300 DPI if possible, and use this checker to verify that your image files meet this requirement before uploading them to platforms like Etsy or Printful.

Question 5

Can I fix a low DPI image?

Accepted Answer

If your image has enough pixels for your target print size but the DPI tag is wrong, you can simply change the metadata to 300 DPI without any quality loss. If your image does not have enough pixels, you will need AI upscaling to add real detail. Simple resampling (stretching the image) just adds blur, not detail.

Question 6

Is my image uploaded to your servers?

Accepted Answer

Your image is never uploaded or transmitted to any server when you use this DPI checker. The tool uses JavaScript running within your browser alongside the FileReader API to access your file’s data locally on your device. For example, if you disconnect your computer from the internet and then use the checker, it will still function fully because no data leaves your machine. This approach guarantees your privacy and security while verifying DPI metadata instantly, making it suitable for sensitive or proprietary designs that Etsy sellers or POD designers want to review without any risk of exposure.

Question 7

What's the difference between checking and fixing DPI?

Accepted Answer

Checking DPI means reading the metadata stored inside your image file to see the current DPI setting without altering the file in any way. This helps identify whether the image is ready for print or requires adjustment. Fixing DPI, on the other hand, involves editing the DPI metadata to the correct value without changing the actual pixels or image quality. For instance, if you find a 72 DPI setting on an image meant for a 300 DPI print, you should run it through the DPI fixer tool located at /free/dpi-fixer after checking. The typical workflow is to check first, then fix only if the DPI is incorrect for your intended print use.

Question 8

Why does my Canva export show 72 DPI even after setting print export?

Accepted Answer

Canva Pro’s '(PDF) Print' export includes 300 DPI settings inside the PDF file format, but if you export your design as a PNG or JPEG rather than PDF, the file still defaults to 72 DPI metadata. This happens because Canva’s PNG and JPG export options do not embed print DPI properly, which can mislead you when preparing files for print. For example, if you create a 3000x3000 pixel image intended for a 10x10 inch print, but the checker shows 72 DPI, you can use the DPI fixer to update just the metadata to 300 DPI without changing pixels. This ensures your print shop or POD partner recognizes it as print-ready.

Question 9

Can I check DPI on multiple files at once?

Accepted Answer

This free DPI checker is designed to process one image file at a time to provide instant DPI feedback in your browser. If you have multiple files to verify or fix, such as dozens of sticker designs or apparel prints, you should consider using the paid DPI converter tool offered by the same platform. The paid service works on a server queue and can batch process hundreds of files, packaging the results into a ZIP archive for easy download. For typical Etsy sellers handling a few images, using the free single-file checker is ideal; for larger print shops or designers needing batch workflows, the paid option is recommended.

Question 10

What does the print verdict mean?

Accepted Answer

The checker shows what print size your file supports at the current DPI. A 3,000 px file at 72 DPI 'verdict: 41 inches at low quality' means the printer would interpret it that large. At 300 DPI: 10 inches sharp. The verdict tells you whether you can ship as-is or need to fix DPI/upscale first.

Check your image DPI instantly

How it works

Drop your image

DPI is read instantly

See your print verdict

Why use this checker

100% client-side

Reads real EXIF metadata

Print size calculator

Color-coded verdict

Full dimension details

Drag-and-drop interface

When you’d use this checker

Common DPI-checking mistakes

Frequently asked questions

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