A pin can have a great idea behind it and still be held back by simple problems: the wrong shape, a low resolution export, text too close to the edge, or colors so flat that the title disappears at feed size. This analyzer looks at your pin image and checks those basics: aspect ratio, resolution, brightness, contrast, colorfulness, file size and format. Each check comes with a short explanation and what to change.
To be clear about what it does: it analyzes the image file, not how the pin performs. It cannot see your impressions, saves or clicks, and a high score does not promise reach. Use it as a pre-flight check. The image is analyzed in your browser and never uploaded.
What each check means
Aspect ratio compares the image with the 2:3 shape Pinterest recommends; images taller than 1:2.1 are cut off in the feed. Resolution checks that the image is at least 1000 pixels wide. Brightness is the average lightness from 0 to 100, and contrast is how spread out the light and dark values are. Low contrast usually means a title that is hard to read on a small screen.
File size and format matter for uploading: Pinterest accepts images up to 20 MB, and JPG, PNG and WebP are safe choices. If a file is large, use the image compressor. To fix the shape of many images at once, use the aspect ratio checker.
What this analyzer cannot tell you
Whether a pin does well depends on the topic, the keywords in its title and description, the board it is saved to, timing, and what people are searching for. None of that is in the pixels. Pinterest Analytics is the only reliable source for how a pin performs.
For the words around your pin, try the pin SEO checker. To see the image the way people meet it, at real phone size between other pins, use the mobile preview.