DPI Checker — Check Image DPI Online Free
Print Size at Different DPI
| DPI | Print Size (inches) | Print Size (cm) | Typical Use |
|---|
Exam & Document Compliance
| Standard | Required | Your Image | Status |
|---|
Every photo carries a DPI value in its metadata, even if you never see it. This number decides whether your image prints sharp or looks blurry on paper. Our DPI checker reads that value straight from your file and shows it in seconds. Upload any JPG, PNG, WebP, BMP, or TIFF and get the DPI, pixel dimensions, file size, and a clear print-ready verdict. Everything runs inside your browser. Your image never leaves your device or touches our servers.
What Your Results Mean
Once you upload an image, four values appear right away.
DPI shows the dots-per-inch value stored in the file. Some formats store X and Y separately, so you may see two slightly different numbers.
Dimensions shows the pixel width and height. This never changes when DPI changes.
File size and format confirm what you uploaded, useful when comparing multiple versions of the same photo.
The verdict badge translates the raw number into a plain answer. Print Ready means 300 DPI or higher, ready for professional printing. Home Print OK covers 150 to 299 DPI, fine for home printers and drafts. Screen Only means under 150 DPI, best kept for web use. Some uploads show No DPI Tag Found instead. This happens often with PNGs, screenshots, and images exported from design tools. It does not mean the image is low quality. It means no DPI value was written into the file. Software fills in a default when this happens, usually 96 DPI on Windows or 72 DPI on Mac and Photoshop.
DPI vs PPI: What’s the Difference
DPI stands for dots per inch, a term that originally described printer output. PPI stands for pixels per inch, which describes screen and digital image density. In daily use, both terms get used interchangeably for the same thing. Our checker reports the value under DPI since that’s what most people search for, but the number reflects your image’s pixel density either way.
Is Your Image 300 DPI?
Upload your file above and the badge answers this instantly. 300 DPI is the standard most print shops and professional printers ask for. It guarantees sharp detail with no visible dots or pixelation at normal viewing distance. 150 DPI works fine for home printers and casual prints. 72 to 96 DPI is the standard for web and screen display, where higher DPI adds file size without adding visible quality. If your check shows below 300 DPI and you plan to print, consider a higher-resolution source image instead of just changing the DPI number.
Print Size at Different DPI
The print size table shows how large your image can print at 72, 150, and 300 DPI, plus your image’s actual detected DPI. Print size comes from a simple formula: pixel dimensions divided by DPI gives inches. A 3000×2000 pixel image at 300 DPI prints at 10×6.67 inches. The same image at 72 DPI could print at over 40 inches wide, but it would look soft and pixelated at that size. More pixels give you more flexibility to print larger without losing sharpness.
DPI Requirements for Indian Exams and Passport Photos
Government exam portals and passport applications enforce strict photo specifications. Our compliance table checks your uploaded image against common standards used for SSC, IBPS, UPSC, and NEET applications, along with Indian and US passport photo sizes. Each standard shows a Pass, Close, or Fail status based on your image’s pixel dimensions and DPI.
Most portals validate pixel width and height along with file size, not the DPI tag itself. Our checker shows both, so you know exactly where your photo stands before you submit.
These values are guidelines. Exam authorities update their specifications from year to year, so always confirm exact requirements against your exam’s official notification. If you need to create a new passport or exam photo from scratch, our Passport Size Photo Maker builds one to the correct size with background removal built in.
Which Image Formats Store DPI
Not every file format saves a DPI value the same way.
JPEG files store DPI in the JFIF header or EXIF tags, most reliably in photos from cameras and scanners.
PNG files store an optional pHYs chunk, which we convert from pixels-per-metre to DPI. Many PNGs, especially screenshots and web exports, skip this chunk entirely.
TIFF files store horizontal and vertical resolution directly in their tags, usually with dependable results.
BMP files carry resolution in their header, though many BMPs default to a fixed value.
WebP and GIF rarely carry any DPI metadata at all. If you upload one of these and see No DPI Tag Found, that’s expected behavior, not an error.
Frequently Asked Questions
How do I check the DPI of an image online?
Upload your image to the tool above. It reads the DPI directly from the file’s metadata and shows the result immediately, no software or account needed.
What DPI is needed for printing photos?
Professional printers and print shops typically require 300 DPI. Home printers work fine with 150 DPI, and large posters viewed from a distance can use 150 to 200 DPI.
Why does my image show no DPI value?
Some formats, especially PNG screenshots and web-exported images, never save a DPI tag. The image itself is still usable; it just lacks this specific metadata field.
Can I check DPI on my phone?
Yes. The tool works in any mobile browser. Upload a photo from your phone’s gallery the same way you would on desktop.
Does changing DPI improve image quality?
No. Changing the DPI number only affects print size, not the actual pixel count. To genuinely improve quality, you need more pixels from a higher-resolution source.
Is 72 DPI good enough for web use?
Yes. Screens display images by pixel count, not physical DPI, so 72 to 96 DPI is the standard for web images and keeps file sizes smaller.
Check Your Image DPI Now
A quick DPI check saves you from rejected prints, failed exam form uploads, and blurry posters. Upload your image above and get an instant answer on whether it’s print ready. Once you know your DPI, our other tools can help with the next step: resize to exact pixel dimensions, compress to a target KB size, or upscale a low-resolution photo before printing.