What is an Image DPI Checker Tool?
An Image DPI Checker is an online utility designed to read the hidden metadata tags embedded inside digital graphic files. Every photograph or artwork file saved on a computer contains binary header segments (such as EXIF or JFIF marker tags) that store resolution density information measured in Dots Per Inch (DPI) or Pixels Per Inch (PPI).
Our online DPI inspector allows artists, photographers, Etsy sellers, and graphic designers to verify whether their files meet commercial print standards (300 DPI) before sending files to commercial print shops or offering them for download.
How to Check Image DPI on Desktop Operating Systems
If you prefer checking DPI locally on your computer without an internet connection, here are the standard operating system procedures:
Checking DPI on Windows PC:
- Right-click the image file on your desktop or file explorer.
- Select Properties from the contextual menu.
- Click on the Details tab at the top of the properties window.
- Scroll down to the Image section and locate "Horizontal Resolution" and "Vertical Resolution" (e.g., 300 dpi).
Checking DPI on macOS (Mac):
- Double-click the image file to open it in Apple Preview.
- Click Tools > Show Inspector in the top menu bar (or press
Cmd + I). - Look at the "Image DPI" field inside the Inspector dialog box.
Resolution Reference Guide for Digital & Print Media
| Media Type | Standard DPI | Why This DPI Matters |
|---|---|---|
| Digital Screen Displays (Web / Mobile) | 72 DPI / 96 DPI | Optimized for fast page loading and screen pixel density. |
| Etsy Wall Art & Poster Downloads | 300 DPI | Guarantees sharp, photo-realistic paper printing without blurriness. |
| High-End Art Gallery Canvas Prints | 600 DPI | Ultra-high density ink drops for fine detail archival prints. |
| Outdoor Billboards & Large Banners | 150 DPI | Large physical size viewed from 5+ feet distance needs fewer dots. |
How Physical Print Dimensions Are Calculated
Your photo's printable size in physical inches is determined by dividing pixel dimensions by the DPI resolution:
Print Width (Inches) = Pixel Width ÷ Target DPI
For example, if your photo is 2400 pixels wide and has a resolution of 300 DPI, it will print accurately as an 8-inch wide poster (2400 ÷ 300 = 8 inches).