Find out the DPI stored in an image, its pixel size, and how good it will look at common print sizes, all at once for as many images as you like.
Drop images here or choose files
Check one or many · nothing is uploaded
Stored DPI is the value saved in the file. It decides how large the image appears when placed in Word or a design app. Effective DPI is what really matters for print quality: how many pixels land on each inch of paper at a given print size. Above 300 is excellent, 200 to 300 is good, 150 to 200 is acceptable for posters, and below 150 usually looks soft.
Many images, especially screenshots, web images and files edited in some apps, have no DPI saved at all. Windows then shows 96 DPI and Photoshop shows 72 DPI, but those numbers are only defaults. You can set a real value with our DPI changer.
On Windows: right-click the file, choose Properties, then the Details tab, and look for Horizontal resolution. On a Mac: open the image in Preview, then Tools, Show Inspector. This page does the same for many files at once and also tells you the print quality.
Drop it into the checker above. It shows the stored DPI and also the effective DPI at common print sizes, which tells you whether it will actually look sharp.
Not necessarily. DPI is only a label. A 72 DPI image with 4000 × 3000 pixels prints beautifully at 13 × 10 inches once relabelled to 300 DPI.
No. The file is read inside your browser and never leaves your device.