Upload an image to instantly check its exact aspect ratio, dimensions, and standard format matching.
All format conversion happens locally in your browser. Your files never leave your device.
Quick Answer
Drop any image into the tool and it instantly reads the pixel dimensions, simplifies the width-to-height ratio to its lowest terms, and tells you which standard format it matches.
The checker utilizes your browser's native Image object API. When you select a file, it loads the image into memory, extracts the intrinsic width and height properties, and computes the greatest common divisor (GCD) to display the simplified fractional ratio.
Process your images in seconds with these simple instructions.
Drop any image into the designated area.
The tool instantly reads the native pixel dimensions.
See the simplified aspect ratio and standard format matches immediately.
Your file is checked locally. No data is sent over the internet.
Automatically identifies standard formats like 16:9, 4:3, or 1:1.
Results are displayed instantly as soon as you select a file.
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Upload a file, choose output quality settings, and download the converted result. Everything stays on your device.
Works with files up to 50MB. Larger files may take longer depending on your device.
Difficulty: beginner
Source Format
Compression: Varies by format
Transparency: Check each format
Output Format
Optimized for your needs
Quality setting: Configurable
Size changes vary by format. The quality slider lets you balance file size and visual fidelity. Higher quality = larger file.
