📐 Image Resolution & Aspect Ratio Inspector - Free Online Tool
Check image dimensions, resolution, aspect ratio, and file size instantly. Perfect for social media specs and print requirements.
Drop image here or click to browse
Supports JPG, PNG, WebP, GIF, SVG
Understanding Image Resolution and Aspect Ratios
Image resolution and aspect ratio are fundamental properties that determine how your images display across different devices and platforms. Understanding these concepts ensures your visual content looks perfect everywhere it's shared.
Frequently Asked Questions
Upload your image to our inspector tool, and it will instantly display the width, height, aspect ratio, file size, and format information.
Instagram feed posts work best at 1:1 (square) or 4:5 (portrait). Stories and Reels require 9:16 (vertical). Use 1080×1080 or 1080×1350 for feed posts.
Professional printing requires 300 DPI at the final print size. For example, an 8×10 inch print needs at least 2400×3000 pixels.
Megapixels (MP) represent total pixel count in millions. Calculate by multiplying width × height and dividing by 1,000,000. A 4000×3000 image is 12 MP.
Changing aspect ratio requires either cropping (losing content) or adding borders/padding. You cannot change aspect ratio by stretching without distortion.