2026-08-05
"Does compressing a PNG lose quality?" — this is the question people get wrong. PNG is a lossless format by design; what actually destroys quality are tools that squeeze PNG like a JPG, lossily. The right way to compress a PNG is to remove its invisible weight: redundant metadata, unnecessary color depth, and inefficient encoding. Here are the 3 moves that shrink a PNG without touching its pixels.
PNG stores pixels with a lossless algorithm (DEFLATE) — compressing it never degrades quality. File size comes from three parts, and each points to an optimization:
100% browser-local processing: drop in a PNG, and it analyzes color depth, cleans metadata, and re-encodes — outputting a smaller lossless PNG. No server upload, no sign-up, no stored data. Your file never leaves your device.
pngquant --quality=65-80 automatically drops to 8-bit and re-quantizes; optipng -o7 re-encodes at maximum compression. Great for batch jobs, but requires CLI comfort.
In Photoshop, export as PNG-8 with metadata stripped; in Figma, export at 8-bit and disable unused export options. Handy for designers optimizing as they go.
Yes. PNG is lossless; we only strip metadata and optimize color depth and encoding — pixels are never resampled, so visual quality stays identical.
Screenshots, charts, and illustrations (lots of flat color and metadata) often shrink 50-80%. For photographic PNGs, converting to JPG/WebP is usually more efficient.
You can re-generate a larger file, but stripped metadata is gone permanently. Keep an original copy of important files.
No. Everything runs in your browser; files are never uploaded or stored on a server.
Drop in your first PNG and get a smaller, quality-identical file in 30 seconds.