Aspect ratio, DPI, file size, social media sizing, passport photo, and border tools for working with images.
Calculate an image's DPI (dots per inch) from its pixel dimensions and print size.
Compress JPG, PNG and WebP images in your browser: set the quality, cap the dimensions, convert to WebP or JPG, and download in bulk as a ZIP.
Calculate pixel dimensions from an aspect ratio and one known dimension.
Crop and resize a photo to standard passport/ID photo dimensions.
Add a solid-color border of any width around an uploaded image.
Calculate an image's aspect ratio from its pixel width and height.
Estimate an image's uncompressed bitmap file size from its pixel dimensions.
Check reference image dimensions for major social media platforms and placements.
Calculate an image's DPI (dots per inch) from its pixel dimensions and print size.
Compress JPG, PNG and WebP images in your browser: set the quality, cap the dimensions, convert to WebP or JPG, and download in bulk as a ZIP.
Calculate pixel dimensions from an aspect ratio and one known dimension.