Image DPI Checker
Check the DPI, resolution, and dimensions of your images instantly.
Verify if your images are print-ready — 100% free, runs in your browser.
What Our Image DPI Checker Analyzes
Upload any image to instantly get detailed resolution and metadata information:
- • Image dimensions in pixels (width x height)
- • DPI (dots per inch) from EXIF metadata
- • Physical print dimensions at 72, 150, and 300 DPI
- • File size and image format
- • Aspect ratio and megapixel count
- • Print-readiness assessment and recommendations
Related Image Tools
- PDF DPI Analyzer — Check image resolution and DPI inside PDF files
- Image Compressor — Reduce image file size while maintaining quality
- Image Resizer — Resize images to exact dimensions or presets
- Image Format Converter — Convert images between PNG, JPG, and WebP
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Image DPI Checker FAQs
Common questions about checking image DPI and resolution
What is DPI in an image?
DPI (Dots Per Inch) is a metadata value that tells printers and software how large to physically render an image. It indicates how many dots of ink will be placed within each inch when printing. A 300 DPI image will print sharper and with more detail than a 72 DPI image at the same physical size.
How do I check the DPI of an image?
Upload your image to our free DPI checker above. It reads the EXIF metadata embedded in the file to extract the DPI value. For JPG images, DPI is typically stored in EXIF data. For PNG images, DPI can be stored in the pHYs chunk.
What DPI should my images be for printing?
The industry standard for professional printing is 300 DPI. This applies to brochures, business cards, flyers, books, and most commercial print materials. For large format printing like banners and posters (viewed from a distance), 150 DPI is often sufficient.
What is the difference between DPI and PPI?
DPI (Dots Per Inch) refers to printer output — the physical dots of ink per inch. PPI (Pixels Per Inch) refers to screen display — the pixels per inch on a digital screen. In practice, the terms are often used interchangeably when discussing image resolution.
Why does my image show 72 DPI?
Most digital cameras, phones, and screen-capture tools save images at 72 DPI by default because that was the traditional Mac screen resolution. This doesn't mean the image is low quality — it simply means the metadata suggests displaying at 72 dots per inch. The actual quality depends on the pixel dimensions.
Can I change the DPI of an image?
You can change the DPI metadata in image editing software like Photoshop (Image > Image Size) or GIMP. However, simply changing DPI without resampling just changes the print size, not the actual quality. To truly increase quality, you need more pixels (higher resolution source images).
Does higher DPI mean better quality?
Not necessarily. DPI is about print density. A 6000x4000 pixel image at 72 DPI will print at 83x55 inches but can be re-set to 300 DPI to print at 20x13 inches with excellent quality. The pixel count (resolution) determines actual quality, while DPI determines physical print size.
What DPI is best for web images?
For web and screen display, 72 DPI is standard. Since screens display images by pixel count rather than physical size, DPI doesn't affect how images look on screen — only the pixel dimensions matter. Using 72 DPI keeps file sizes smaller for faster web loading.
Is this tool free and private?
Yes, completely free with no limits. Your images are processed entirely in your browser using JavaScript — nothing is uploaded to any server. Your images remain 100% private on your device.
What image formats are supported?
This tool supports JPG/JPEG, PNG, WebP, and TIFF images. EXIF DPI data is most commonly found in JPG files from cameras and scanners. PNG files may store DPI in the pHYs metadata chunk.
How are the print dimensions calculated?
Print dimensions are calculated by dividing pixel dimensions by the target DPI. For example, a 3000x2000 pixel image at 300 DPI = 10x6.67 inches (25.4x16.93 cm). We show dimensions for common DPI values: 72 (web), 150 (drafts), and 300 (print).
Why is DPI important for print design?
Print shops require specific DPI values (usually 300) to ensure images print sharply. Images with too low a DPI will appear pixelated and blurry when printed. Checking DPI before sending files to print saves time, money, and avoids disappointing results.
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