Basics
What Is Image Resizing?
Pixels, dimensions and what really happens when an image changes size. A jargon-free starting point if you are new to working with digital images.
Read the guideBlog
Plain-language guides to image sizes, formats and file weights. Learn how resizing works, how to avoid stretched images, and how to pick the right format — then put it into practice with the free, browser-based resizer.
Guides
All articles
Formats
JPG vs PNG vs WebP
Which format should you export to? Compare compression, transparency, quality and file size across the three formats that matter on the web.
Compare formatsHow-to
Resize Without Distortion
Stretched or squashed images usually come from a broken aspect ratio. Learn the simple formula — and the tool settings — that keep proportions correct.
Read the tutorialOptimization
Resizing vs Compression
Resizing changes pixel dimensions; compression changes how pixels are stored. Understand both and you can make any image dramatically lighter.
Learn the difference