Image DPI Checker
Check and inspect exact DPI/PPI metadata, EXIF resolution, and physical print size in inches and cm.
Click to select or drag & drop an image
Reads EXIF, JFIF, and PNG headers to extract real physical DPI/PPI and calculate maximum printable size.
How to use Image DPI Checker
- 1Upload any JPEG, PNG, or TIFF image.
- 2The tool parses the underlying Exif, JFIF, and pHYs binary chunks to identify the genuine embedded DPI/PPI.
- 3Review your physical print dimensions in both inches and centimeters.
- 4Use the Target Print Calculator to check if your photo has enough pixels for standard photo frames or A4 paper.
Key Features & Highlights
- •Binary Header Inspection — extracts genuine JFIF, Exif TIFF, and PNG pHYs resolution markers
- •Physical Print Dimensions — instantly converts pixel dimensions to inches and metric centimeters
- •Print Quality Rating — identifies whether an image qualifies for 300 DPI fine art printing or is screen-only
- •Interactive Frame Calculator — calculates effective DPI for 4x6, 5x7, 8x10, A4, and poster sizes
- •100% In-Browser Privacy — headers are parsed locally on your device with zero uploads
Check Image DPI, PPI & Physical Print Resolution
DPI (Dots Per Inch) and PPI (Pixels Per Inch) determine how large an image can be printed on physical paper before individual pixels become visibly pixelated or blurry. Standard computer screens operate at 72 or 96 DPI, whereas professional photographic prints and magazines require 300 DPI. BrivTools’ Image DPI Checkerinspects the binary metadata inside your JPEG, PNG, and TIFF files to display true hardware resolution.
Related Tools
- Image Dimensions Checker — Inspect pixel width, height, and megapixels.
- Image Aspect Ratio Calculator — Calculate exact width-to-height proportions.
Frequently Asked Questions
What is the difference between DPI and PPI?
PPI (Pixels Per Inch) measures digital image sensor resolution and screen pixel density, whereas DPI (Dots Per Inch) refers to physical printer ink droplet density. In digital graphics workflows, the two terms are used interchangeably.
What DPI is needed for a high-quality physical print?
300 DPI is the universal gold standard for sharp, magazine-quality prints viewed up close. 150 to 200 DPI is acceptable for larger wall prints and posters viewed from several feet away.
How does the tool read DPI metadata from PNG, JPEG, and TIFF files?
The tool parses binary image header markers directly: APP0 (JFIF) density tags or Exif IFD0 metadata in JPEGs, `pHYs` (physical pixel dimensions) chunks in PNGs, and resolution tags in TIFF files to extract the exact horizontal and vertical DPI.
Does changing DPI alter the file size or pixel dimensions of an image?
No. Changing only the DPI tag changes the intended physical print size (inches or centimeters) without altering the image's actual pixel dimensions or compressed file size on disk.
How do I calculate what size print my photo can produce at 300 DPI?
Divide the pixel width and height by 300. For example, a 3000×2400 pixel photo yields an exact 10×8 inch print at commercial 300 DPI quality (3000/300 = 10 inches; 2400/300 = 8 inches).
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