DPI vs PPI: The Difference, Explained Without the Jargon

What each acronym measures and when it matters

DPI vs PPI: The Difference, Explained Without the Jargon. What each acronym measures and when it matters. DPI measures printer ink dots, PPI measures image pixels — and browsers ignore both. A jargon-free explanation with a practical cheat sheet for web and print. Every conversion runs entirely inside your browser using the Canvas API and (where needed) heic2any, so your photos never touch our servers and stay completely private. Batch-convert hundreds of files at once, fine-tune output quality, resize on the fly and download the results as a single ZIP. There is no signup, no watermark and no daily limit — just a fast, free tool that works on Windows, macOS, Linux, iOS and Android. Whether you need to attach images to email, prepare product photos for Etsy, eBay or Amazon, fix HEIC files exported from an iPhone, shrink screenshots before uploading or convert WEBP to a more compatible format, the right workflow is one click away. Common topics covered here include dpi vs ppi, dpi vs pixels inch, what is dpi, dpi for screen, pixels per inch explained.