Maximum shrink
Graphics, screenshots, UI — AVIF at 70–85 is visually lossless and 5× smaller than PNG.
PNG is lossless and heavy — AVIF is the smallest lossless-aware codec. Convert PNG to AVIF locally, keep alpha, shrink 70–85% without a server.
Keep PNG masters, deliver AVIF — 70–85% smaller with alpha and HDR where needed.
For PNG, quality is about preserving edges and transparency.
Use 75 for aggressive web, 80–85 for masters you keep. Preview per file.
All local, no server.
Folder or files. Filter by extension.
Quality 70–85, keep alpha, optional downscale.
Batch locally, backups to /backup.
Keep AVIF small. Compress AVIF →
Same as JPG. JPEG to WebP →
Stay PNG. Compress PNG →
Faster encode. PNG to WebP →
Photos. JPG to WebP →
Photos max. JPG to AVIF →
Yes. PNG alpha → AVIF alpha, no matte. Edges stay clean.
75–80 for web graphics, 80–85 for masters. Try 80 — visually lossless and 80% smaller.
Yes. Drop a folder, Compressy converts every PNG, keeps subfolders.
No. PNG → AVIF is local. No server, no account.
PNG to AVIF offline — 80% smaller, alpha kept.