Free Tool
PNG Optimizer
Upload a PNG and see how much you can save by switching to WebP or AVIF — both of which preserve full transparency. Typical savings are 30–70% with no visible quality loss.
Drop a PNG here to see size savings
or click to browse — works with any image format
Why switch from PNG?
PNG is lossless and universal, but its file sizes are large for photos and product images. WebP offers comparable quality at 30–50% smaller file sizes. AVIF goes further — 50–70% savings — and is now supported in Chrome, Safari, and Firefox.
Both WebP and AVIF support full alpha channel transparency — your cut-out images stay transparent. Your images never leave your device — all encoding is local.