Compresser PNG — gratuit en ligne, sans envoi
Drop a PNG into PicBrewery and download a smaller lossless PNG — optimized with oxipng in your browser. No upload, no watermark, no account.
Comparez les compromis PNG sur la page des formats.
Comment compresser PNG
- Ouvrez PicBrewery.
- Drop your
.pngfile (or several) on the drop zone. - Wait for the results row. The PNG column is oxipng-optimized — same pixels, fewer bytes.
- Download from the PNG cell or use Download all as ZIP.
Lossless PNG optimization
PicBrewery uses oxipng for PNG output — lossless DEFLATE recompression, palette quantization where applicable, and metadata stripping. Visual pixels do not change.
Screenshots and UI assets with flat colors often shrink 20–50%. Photographic PNGs (rare but possible) may see smaller gains because PNG is the wrong codec for photos.
Quand WebP ou AVIF bat PNG
Pour le web, WebP ou AVIF lossy avec alpha est souvent plus petit que PNG. PicBrewery affiche tous les formats côte à côte. Voir PNG vers WebP ou compresser AVIF.
Questions fréquentes
Is PNG compression lossless in PicBrewery?
Yes — oxipng recompresses PNG without changing pixels. What you see is what you get.
Will transparency survive?
Yes. Alpha channels are preserved in the PNG output.
Why is my PNG still large?
PNG is lossless — photographic content belongs in JPEG, WebP or AVIF. If you need smaller files and can accept lossy compression, check the WebP or AVIF columns.
Souvent non. Le SVG est compact pour les logos et formes simples ; un WebP sans perte à résolution modérée peut être plus volumineux. Comparez toutes les colonnes dans PicBrewery.
No; metadata is stripped during optimization.
Can I batch-compress PNGs?
Yes — up to 20 files per batch with ZIP download.
Compresser PNG maintenant
Drop PNG files into PicBrewery and download optimized PNGs. Client-side only.