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Guides: image formats and settings

Short, practical articles about formats, sizes, DPI, compression and privacy.

6 min readWhat is HEIC, and how do you open it?HEIC is the format iPhones use for photos by default. It saves storage space, but many computers and upload forms cannot read it. Here is what it is and how to turn it into a JPG.6 min readWebP vs AVIF for websites6 min readHow to get a photo under a KB limit6 min readWhat DPI really means for your images6 min readPNG or JPG? How to choose6 min readEXIF data and what your photos reveal6 min readPassport and ID photo sizes, explained6 min readSocial media image sizes6 min readHow to optimize images for a faster website6 min readChanging a file extension is not converting6 min readHow to make a favicon for your website6 min readCombining document photos into one PDF