Read the embedded value
JPEG stores density in JFIF or EXIF fields. PNG uses a pHYs chunk. If neither is present, the tool reports that no DPI is embedded instead of inventing a value.
PRINT SIZE · LOCAL METADATA
Check and change image DPI
Inspect JPEG or PNG resolution metadata, calculate its physical print size, and save a new DPI value without resampling the image.
Check an image's DPI
Local processingWHAT DPI MEANS
Metadata for print layout—not extra detail
Your image's pixel dimensions determine its captured detail. DPI tells compatible software how densely to place those pixels on paper.
Calculate physical size
Print width in inches equals pixel width divided by DPI. A 3000-pixel image at 300 DPI is 10 inches wide; changing it to 150 DPI describes a 20-inch layout with the same pixels.
Preserve image pixels
The download updates density metadata without decoding or re-encoding the picture. It does not upscale, compress, crop, or improve the original image data.
Know the limits
This tool writes JPEG and PNG density metadata. WebP and other formats are reported as unsupported. Printing software may override the embedded value with its own page settings.
DPI questions
Does changing DPI improve image quality?
No. The operation keeps the same pixels and only changes print-density metadata. More captured pixels—not a larger metadata number—provide more image detail.
Why does another app show a different DPI?
Some software ignores embedded density or applies its own default. Check the print dialog's scaling and page-size controls before printing.
Are images uploaded?
No. Inspection, metadata writing, verification, and downloading happen in this browser tab. Your image is not sent to an image-processing server.