Image DPI Checker
Check an image's DPI, pixel dimensions and megapixels, and see its maximum print size at 150, 300 and 600 DPI. Free, reads metadata in your browser.
About the Image DPI Checker
Wondering whether a photo will print sharply, or what DPI a scan was saved at? Drop an image here and this checker reads its embedded resolution metadata — EXIF for JPG and TIFF, the pHYs chunk for PNG, and the JFIF density header as a fallback — alongside pixel dimensions, megapixels and aspect ratio.
The print-size table answers the practical question: at 300 DPI (photo-print quality), 150 DPI (posters seen from a distance) and 600 DPI (fine detail), how large can this image physically print? A 3000 × 2000 px photo, for example, prints at 10 × 6.7 inches at 300 DPI.
Everything is parsed locally in your browser — the image is never uploaded, so it's safe for documents, IDs and unpublished work. If a file has no embedded DPI, the tool tells you so and assumes the 72 DPI screen default.
How to Use the Image DPI Checker
- 1Upload or drag in an image (JPG, PNG, WebP or TIFF).
- 2Read the DPI, pixel dimensions, megapixels and aspect ratio instantly.
- 3Check the print-size table to see how large the image can print at each quality level.
- 4Copy the results summary if you need to share it.
Frequently Asked Questions
What is DPI and does it affect screen quality?
DPI (dots per inch) only matters for printing — it maps pixels to physical inches. On screen, only pixel dimensions matter: a 1000 px image looks identical at 72 or 300 DPI. Changing DPI metadata never adds or removes detail.
What DPI do I need for printing?
300 DPI is the standard for photo prints, magazines and anything viewed up close. 150 DPI is acceptable for large posters and banners viewed from a distance, and 600 DPI is used for fine-art or very small detailed prints.
Why does my image show 72 DPI (assumed)?
Many images — especially screenshots, WhatsApp downloads and web graphics — carry no resolution metadata at all. In that case the tool assumes the traditional 72 DPI screen default. The pixel dimensions are still exact.
How do I increase an image's DPI?
DPI is just metadata; raising the number doesn't add detail. What matters is having enough pixels: to print 8 × 10 inches at 300 DPI you need 2400 × 3000 px. If your image is smaller, an upscaler can interpolate extra pixels, but genuine detail comes only from a higher-resolution original.
Is my photo uploaded to check the DPI?
No. The file's metadata is parsed entirely in your browser — nothing is sent to any server.