Check Image DPI Online
Drop in a JPG or PNG to read its stored DPI source, exact pixel dimensions, megapixels, and calculated physical print size without uploading the file.
More image DPI tools
Check the file first, change any supported density, or use the focused 300 DPI workflow.
Read the metadata that is actually present
JPG JFIF and EXIF resolution
JPG files can store image density in JFIF or EXIF metadata. The checker reads both and identifies which source supplied the displayed value.
PNG physical-pixel density
PNG files use a pHYs chunk to store pixels per physical unit. The checker converts a meter-based value to pixels per inch and reports when that chunk is absent.
Separate pixels from print instructions
Missing DPI is normal on the web
Screenshots, social downloads, and web exports often omit physical-resolution metadata. That does not mean the image has no resolution; its exact width and height in pixels still determine screen detail and possible print size.
Calculate print size honestly
When stored DPI exists, the checker divides pixel dimensions by that value to show the calculated print size in inches and centimeters. Printer scaling and application settings can still override the tag.
How do I check the DPI of an image?
- 1
Step 1: Choose a JPG or PNG
Select one image up to 25 MB. The browser reads the file directly on your device.
- 2
Step 2: Read the DPI and source
See the horizontal and vertical density plus the JFIF, EXIF, or PNG metadata source. Files without a physical-resolution tag are clearly marked.
- 3
Step 3: Review pixels and print size
Use the exact dimensions and calculated physical size to decide whether the image meets the destination requirement.
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Upload the JPG or PNG and read the stored DPI result. Also check the pixel dimensions against the intended physical print size because a 300 DPI tag alone does not guarantee enough detail.
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