LilacpaneImage size and aspect ratio checker
Drop in a screenshot or image to inspect its pixels, simplified ratio, orientation, and file information. Every calculation happens in your browser.
Drop an image here
This file could not be read. Please choose a common image format.
Checks pixel dimensions only; it does not check transparency, screenshot content or App Review approval. Apple specifications · 2026-09-13
Choose the right export size
What does this tool help you check?
Before creating website visuals, social assets, portfolio mockups, or app-store screenshots, confirm the source image’s real pixels and ratio to avoid blurry upscaling, mismatched orientation, and accidental cropping.
- Use the original file instead of a copy compressed by a messaging app.
- Check the destination’s current size requirements before publishing.
- A correct ratio does not guarantee enough pixels; verify both width and height.
Aspect ratio check: worked examples
The order is width:height. A 1920 × 1080 image reduces to 16:9; rotating it to 1080 × 1920 gives 9:16. A 1600 × 2000 image reduces to 4:5. Enter these dimensions above to check the result.
For 2048 × 2732, divide both values by 4: the exact ratio is 512:683, not 3:4. Use exact pixel pairs when checking upload requirements.
Dimensions cannot tell you whether text is sharp or an image was compressed. Read why screenshots look blurry and what export scale changes before enlarging a small source.
Image dimensions and ratio: common questions
How do I find an image’s aspect ratio?
Divide width and height by their greatest common divisor. For example, a 1600 × 2000 poster simplifies to 4:5. This tool calculates it from your image or entered dimensions.
Is 2048 × 2732 exactly 3:4?
No. It simplifies to 512:683. A nearby common ratio is useful for comparison, but App Store submissions need an exact accepted pixel pair.
Does changing DPI fix an incorrect screenshot size?
No. A DPI label does not add pixels. Check the exported image’s width and height, then adjust the canvas or export settings in your editor if needed.
Are my screenshots uploaded?
No. Selected files are decoded locally in your browser. You can also enter dimensions without selecting a file.
Need to add a device frame, background, and copy next?
Import the image into Lilacpane and continue building your product visual on iPhone, iPad or Mac.
Download on the App Store ↗