Image Dimensions Checker
Check an image's pixel size, megapixels, aspect ratio, and DPI at a glance — free and right in your browser.
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Width, height, megapixels, and DPI
The most basic facts about an image — how many pixels wide and tall it is, its megapixel count, and its aspect ratio — aren't always easy to find without opening an editor. This checker reads them instantly: drop an image and see its exact dimensions, resolution, and file size in one place.
It also reads the DPI (dots per inch) tag, which matters for printing. DPI has no effect on how an image looks on a screen — there, only pixel dimensions count — but it determines how large the image prints. The tool shows both, so you know what you're working with.
How to check image dimensions
- Open your image. Drag it onto the tool, choose a file, or paste it.
- Open the Size & DPI tab. See the width, height, megapixels, aspect ratio, DPI, and file size.
- Plan your print or resize. Use the print-size estimate, or send the image to our resize tool to change it.
DPI vs pixels — what matters when
For anything on screen — websites, social media, presentations — ignore DPI and look only at pixel dimensions. For printing, aim for around 300 DPI: a 3000 × 2000 px photo prints cleanly at about 10 × 7 inches.
More EXIF & metadata tools
Häufig gestellte Fragen
What's the difference between dimensions and DPI?
Dimensions are the pixel width and height — the true size of the image. DPI is a print-density tag that only affects how large the image prints, not how it looks on screen.
How many megapixels is my image?
Megapixels are width × height ÷ 1,000,000. The checker calculates it for you, so a 4000 × 3000 image is 12 MP.
Why does my image show 96 DPI or no DPI?
Many images don't store a DPI tag, so screens assume 96 DPI. That's fine — DPI only matters when you print.
Where is my image processed?
The metadata is read and removed in your browser, so the clean copy is created on your own device. How any data associated with the tool is handled is described in our privacy policy.
Weitere Bildwerkzeuge
Crop an image
Crop to any ratio or an exact pixel size.
Image toolCompress an image
Shrink file size without visible quality loss.
Image toolResize an image
Change dimensions to exact pixels or presets.
Image toolRotate an image
Rotate 90°, flip, or straighten a tilted photo.
Image toolConvert image format
PNG, JPG and WebP — convert any to any.