Learning center
Image Optimization Guides
Choose a guide based on the problem in front of you: a file that is too large, an image that looks stretched, confusing format choices, or a picture that appears blurry at its destination. Each article includes a practical decision process and examples you can try with the free tool.
How to Compress Images Without Unnecessary Quality LossAdjust dimensions and lossy quality without sacrificing useful image detail.How to Resize Images Without DistortionUnderstand aspect ratios, fitting presets and when stretching is the wrong choice.JPG vs PNG vs WebP: Which Format Should You Use?Compare transparency, compatibility, pixel accuracy and typical photo exports.Image Compression vs Resizing: What Is the Difference?Learn why changing pixel count is different from changing encoding.How to Reduce Image File Size for WebsitesPrepare efficient product photos, page images and responsive image assets.Understanding Image Dimensions and ResolutionWork out megapixels, aspect ratio, web display size and print PPI.Why Some Images Become Larger After CompressionDiagnose unexpectedly large exports and calculate the real byte change.Choosing the Right Image Format for Your ProjectChoose settings for product photos, screenshots, logos and delivery copies.