Question 1

What is image DPI?

Accepted Answer

DPI (Dots Per Inch) is a measurement of image resolution for printing. Think of it as the 'print density' of your file.
A high DPI means more pixels are packed into every inch, resulting in a high-quality 300 dpi image that looks sharp and detailed when printed.
Conversely, a low DPI will make the print appear blurry or pixelated.
Common standards include 72 DPI for web and mobile screens, and 300 DPI resolution for professional printing and photography.

Question 2

Can the tool read both horizontal and vertical DPI?

Accepted Answer

Yes. Our checker performs a deep scan of the X (horizontal) and Y (vertical) resolution tags within the image metadata.
In most cases, these values are identical, and the tool will display a single DPI value for simplicity.
However, if a difference is detected (common in scanned documents or faxes), the tool will clearly display the resolution in an X × Y format.
This ensures you have the most accurate print density information for professional use.

Question 3

Will the checker modify my original file?

Accepted Answer

Never. Our tool operates in read-only mode to extract metadata; it will not alter or overwrite your original image in any way. If you need to change the resolution values, please use our DPI Converter page to safely generate a new version of your file.

Question 4

Which image formats can I check?

Accepted Answer

Our checker currently supports JPEG (JPG) and PNG files.

Question 5

Why is the tool returning 72 DPI?

Accepted Answer

72 DPI is often a default placeholder.
Many digital cameras and software assign this value automatically if specific print parameters haven't been set. This doesn't mean your image is low quality; it simply means the file is currently configured for web display rather than professional printing.

Question 6

Can I trust these readings and is it private?

Accepted Answer

Absolutely. Our tool is 100% private and secure.
All analysis is performed locally within your browser; your images are never uploaded to any server. The data is extracted directly from the original file headers, ensuring there is no compression or tampering during the process.

Question 7

How fast is the scanning process?

Accepted Answer

It's near-instant. Our algorithm utilizes millisecond-level response technology by only reading the first few KB of the file's metadata. This allows us to display results instantly, even for high-resolution images that are dozens of megabytes in size.

Image DPI Checker

Check Image DPI Online for Free.

Check DPI of Image in 3 Simple Steps

STEP 1
Import Files

STEP 2
Auto Detect DPI

STEP 3
More Actions

Check Image DPI for Professional Printing

Instant DPI Detection

Batch Image Resolution Audit

DPI Verification

Secure Local Processing

Understand DPI Meaning

Seamless DPI Increase

Questions About Image DPI Checker

What is image DPI?

Can the tool read both horizontal and vertical DPI?

Will the checker modify my original file?

Which image formats can I check?

Why is the tool returning 72 DPI?

Can I trust these readings and is it private?

How fast is the scanning process?

Image DPI Checker

Check Image DPI Online for Free.

Check DPI of Image in 3 Simple Steps

STEP 1Import Files

STEP 2Auto Detect DPI

STEP 3More Actions

Check Image DPI for Professional Printing

Instant DPI Detection

Batch Image Resolution Audit

DPI Verification

Secure Local Processing

Understand DPI Meaning

Seamless DPI Increase

Questions About Image DPI Checker

What is image DPI?

Can the tool read both horizontal and vertical DPI?

Will the checker modify my original file?

Which image formats can I check?

Why is the tool returning 72 DPI?

Can I trust these readings and is it private?

How fast is the scanning process?

STEP 1
Import Files

STEP 2
Auto Detect DPI

STEP 3
More Actions