Image guides
Short, practical guides to preparing images for upload forms, websites, social media and sharing. Each one links to a free tool that runs in your browser.
Image resizing guidePixel dimensions, keeping proportions, common sizes, enlarging and printing.Image file size guideWhat makes files large, KB vs KiB, and how to meet a 100 KB or 500 KB limit.JPG vs PNG vs WebPWhich format to use for photos, screenshots, logos and forms, plus HEIC and AVIF.Aspect ratios and image sizes1:1, 4:5, 9:16, 16:9 and more, how to calculate a ratio, and safe zones.Photo metadata and locationWhat EXIF data reveals, who can see it, and how to remove it or stop it being added.How to use ImageFitNowStep-by-step instructions for every tool on the site.