Image Dimension Checker
Inspect exact image width, height, aspect ratio, megapixels, and print DPI sizes.
Drop your image here
Drag & drop single photo for Studio Mode, or multiple photos for 1-Click Batch Processing
Your images stay on your device
Processing happens 100% locally in your browser. Files are never uploaded to any cloud server.
How to use this tool
Select Any Image
Drop your image file.
Inspect Breakdown
View exact width, height, aspect ratio, megapixels, and DPI print sizes instantly.
Why use Image Toolkit?
Print Size Calculator
Calculates physical print sizes in inches and cm for 300 DPI (Magazine), 150 DPI (Poster), and 72 DPI (Screen).
Megapixels & Ratio
Computes total megapixel density and precise aspect ratio.
How Image Dimension Checker Works in Your Browser
Unlike conventional online conversion websites that upload your files to remote cloud servers, Lumino processes your media 100% client-side inside your browser sandbox using modern WebAssembly (WASM), WebGPU, and the HTML5 Canvas 2D API.
This means your sensitive photos, identity cards, passport scans, and proprietary design files are processed directly on your local device hardware (RAM/GPU) and are never transmitted across the internet.
Everything You Need to Know
Clear answers on privacy, security, file limits, and image quality.
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