Image DPI Checker
What DPI is this image, really? This free checker reads the true DPI stored in your JPG or PNG file — never guessed — plus dimensions and print size at 300 DPI. No upload, no signup.
The file is read only on your device to inspect its headers — it is never uploaded. If no DPI is stored in the file, the tool says so instead of inventing one.
DPI and print size will appear here
Image DPI
Print size = pixels ÷ DPI. Most photos from phones and cameras store 72 DPI; print shops want 300 DPI. Related searches: check DPI of image online, how to find DPI of a photo, image DPI checker free, JPG DPI checker.
How to use
- Choose a JPG or PNG image from your device.
- Click Check DPI. The tool reads the real DPI from the file's JFIF/EXIF or PNG header.
- Read the DPI, dimensions and print size — and whether the image is sharp enough to print at that size.
Frequently asked questions
How do I check the DPI of an image?
Upload nothing — just choose the image here. This free image DPI checker reads the DPI stored in the file itself (JPG JFIF/EXIF or PNG pHYs header) and shows it instantly, along with dimensions and print size.
What if the image has no DPI stored?
Then the tool says 'Not stored' — honestly. Many screenshots and web images carry no DPI at all, and any tool that shows a number for them is guessing. Pixels are what matter; DPI is just a print hint.
What DPI do I need for printing?
Print shops ask for 300 DPI. A 3000 × 2400 px photo prints at 10 × 8 inches at 300 DPI. At 150 DPI the same photo prints twice as large but softer — fine for a poster, not for a photo book.
Is my image uploaded anywhere?
No. The file is read only in your browser to inspect its header bytes. Nothing leaves your device.