Guides
Short, practical explanations of the decisions the tools ask you to make.
Which image format should you use?
What each format is actually good at, and how to pick without guessing.
How to compress an image without wrecking it
Where the quality slider matters, and how to hit a size limit without a blurry result.
Converting between specific formats
Each of these covers what is gained and lost in that particular conversion.
Convert HEIC to JPG
Convert HEIC photos from an iPhone to JPG in your browser. No upload, no account, no watermark, and no limit on how many you convert.
Convert HEIC to PNG
Convert HEIC photos to PNG on your own device. Lossless output, no upload, no watermark. Includes when PNG is the right choice and when JPG is better.
Convert PNG to JPG
Convert PNG images to JPG in your browser to cut file size dramatically. Explains what happens to transparency and when to keep the PNG instead.
Convert PNG to WebP
Convert PNG to WebP in your browser: much smaller than PNG, and unlike JPG it keeps transparency. Includes browser support and when to keep the PNG.