Image Info
Drop in any image to instantly see its pixel dimensions, aspect ratio, file size, format, DPI, and print size. Everything is read locally in your browser, your file is never uploaded.
Free
no account needed
On device
runs in your browser
No upload
the file stays with you
Drag & drop an image here, or click to browse
How to check an image's details
Add an image
Drag it onto the box or click Select image. JPEG, PNG, GIF, BMP and WebP open in any modern browser; TIFF only where the browser can decode it, such as Safari.
Read on your device
The format comes from the file's own bytes, then its dimensions, aspect ratio, file size and DPI are worked out in your browser. Nothing is uploaded.
Check the print size
See how large it prints at 72, 150 and 300 DPI.
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Frequently asked questions
Still have questions? Contact support.
Is my image uploaded anywhere?
No. This tool reads everything directly in your browser using your device's own image decoder. Your file never leaves your computer and is never sent to a server, so it works even when you are offline.
Which image formats are supported?
Common raster formats are supported: JPEG, PNG, GIF, BMP and WebP in any modern browser, and TIFF where the browser can decode it, such as Safari. The format is detected from the file's magic bytes rather than its extension, so a misnamed file is still identified correctly.
How is the aspect ratio calculated?
We take the image's pixel width and height and reduce them to their simplest whole-number ratio using the greatest common divisor. For example, a 1920×1080 image is shown as 16:9, while a 1000×1000 image is shown as 1:1.
What does DPI mean and where does it come from?
DPI (dots per inch) describes the intended print density. We read it from the file's metadata, the JFIF density field in JPEGs or the pHYs chunk in PNGs. When a format carries no DPI value (such as WebP or GIF), we fall back to the web standard of 72 DPI.
What is print size and how is it worked out?
Print size is the physical size an image would print at a given resolution, calculated as pixels divided by DPI. We show it at 72, 150, and 300 DPI so you can see how large the image stays crisp, 300 DPI is the usual target for sharp photo prints.
Why is the displayed file size different from what my system shows?
We report the exact byte count of the file and convert it using binary units (1 KB = 1024 bytes). Some operating systems use decimal units (1 KB = 1000 bytes) or round differently, which can produce a slightly different figure for the same file.