Converting PNG to WebP typically cuts file size 25–50% in lossless mode, or 70–80% in lossy mode, depending on content. WebP's lossless compression handles the same cases PNG handles (sharp edges, transparency, flat colors) but packs them tighter.
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Lossless WebP is a clean upgrade: same pixels, smaller file. Lossy WebP at high quality (85+) is indistinguishable from the PNG for most content and much smaller. Going lower introduces compression artifacts, especially around sharp edges. Alpha transparency is preserved in both modes.
WebP is supported in Chrome, Firefox, Edge, Safari 14+, and every modern OS. Design tools have broad support now: Figma, Sketch, Photoshop, Affinity all handle WebP, though some older workflows still prefer PNG.
PNG is a lossless image format designed to replace GIF. It uses DEFLATE compression, supports an 8-bit alpha channel for full transparency, and preserves every pixel exactly. PNG excels at images with sharp edges, large flat-color regions, text, UI screenshots, and anything you'll re-edit.
WebP is Google's 2010 image format based on the VP8 video codec. It offers lossy and lossless modes, full alpha transparency, and animation in a single container. At matched quality it's typically 25–35% smaller than JPG or PNG. Every major browser has supported it since 2020.
Lossless for anything with text, sharp edges, or flat colors: screenshots, UI, icons, logos. Lossy (quality 85+) for photographic content where the extra compression is worth imperceptible quality loss.
Yes. WebP supports a full 8-bit alpha channel in both lossless and lossy modes, just like PNG.
PNG is a lossless image format designed to replace GIF. It uses DEFLATE compression, supports an 8-bit alpha channel for full transparency, and preserves every pixel exactly. PNG excels at images with sharp edges, large flat-color regions, text, UI screenshots, and anything you'll re-edit.
WebP is Google's 2010 image format based on the VP8 video codec. It offers lossy and lossless modes, full alpha transparency, and animation in a single container. At matched quality it's typically 25–35% smaller than JPG or PNG. Every major browser has supported it since 2020.
Yes. The converter runs entirely in your browser using WebAssembly. Your images are never uploaded, never sent to a server, and never leave your device.
There's no hard limit, but because everything runs in your browser you're bounded by available memory. Very large images (over a few hundred megapixels) can hit browser memory limits. Process in smaller batches if you run into issues.