Smaller files or universal compatibility? A practical comparison of the two formats that carry most of the photos on the web.
Image Format Guides
Which format, which quality setting, and what you actually lose by choosing wrong. No marketing, no invented benchmarks — just the trade-offs, and a link to the tool that does the job.
4 guides
One is lossless, one is not — and picking the wrong one is the single most common image mistake on the web.
AVIF wins on file size. WebP wins on everything else that is practical. Here is where each one earns its place.
Four levers, applied in the right order, will cut most images by 80–95% with nothing visible lost.