Check the DPI (dots per inch) of any JPG or PNG by reading EXIF, JFIF, and pHYs metadata. See current DPI, pixel dimensions, file size, and print size at 72/150/300 DPI. Change DPI metadata for print delivery — bulk check multiple images at once.
Drag and drop one or more JPG or PNG images. For each file, the tool immediately reads the image header and EXIF metadata to extract the stored DPI value. No internet connection or server upload is needed.
Each image shows its detected DPI (and which metadata source it came from: JFIF, EXIF, or PNG pHYs), pixel dimensions, file size, and a print size table showing physical output size at 72, 150, and 300 DPI.
To change the DPI metadata, enter a target value (e.g. 300 for print) and click Apply. The DPI tag in the file header is updated without resampling — pixel data is unchanged. Download the corrected file immediately.
DPI (Dots Per Inch) is metadata embedded in an image file that tells a printer how densely to print the pixels on paper. A 3000×2000 pixel image at 72 DPI prints at roughly 41×28 inches (large but blurry). The same image at 300 DPI prints at 10×6.7 inches (small but sharp). For professional print work, 300 DPI is the standard. Web images typically use 72 or 96 DPI, which has no effect on screen display — only pixel dimensions matter on screen.
For JPEG files, DPI is stored in the JFIF APP0 header segment (density in units of pixels per inch or pixels per cm) or in the EXIF APP1 segment (XResolution and YResolution tags with a ResolutionUnit tag). For PNG files, DPI is stored in the pHYs chunk (physical pixel dimensions). This tool checks all of these locations and reports which source was used.
No — changing the DPI metadata tag does not add, remove, or alter any pixel data. A 1000×1000 pixel image is still 1000×1000 pixels after changing DPI from 72 to 300. What changes is the instruction to the printer about how large to make each pixel. Changing DPI is only meaningful for print workflows. If you need genuinely higher resolution (more pixels), you need to use an AI upscaler or rescan the original at higher resolution.
Many images — especially screenshots, social media downloads, images from web pages, and files processed by some editing tools — do not include DPI metadata at all. The image is perfectly valid and will display correctly on screen. The tool calculates what the print size would be at common DPI values based on pixel dimensions, so you can still determine print suitability even without embedded DPI.
DPI (Dots Per Inch) technically refers to printer output — the number of ink dots per inch. PPI (Pixels Per Inch) refers to digital images — the number of pixels per inch. In practice, the terms are used interchangeably in digital imaging software, camera metadata, and most file formats. This tool reports both terms but reads from the same metadata value.
Yes — drop up to 20 images at once. Each file is read and its DPI metadata displayed in a results table. This makes it easy to audit a batch of files before sending to a print shop — quickly identifying which files are at 300 DPI and which need updating.
