PNG to WebP — smaller, transparency preserved
Convert PNG to WebP directly in your browser. Transparency is fully preserved. WebP is up to 50% smaller than PNG — ideal for modern websites.
Tips & notes
Frequently asked
Is my transparency preserved? +
Yes, fully. WebP supports a full alpha channel, just like PNG.
Lossy or lossless? +
JNRT Pixel uses lossy WebP via the Canvas API. For lossless WebP you'll need a specialized tool like Squoosh or the cwebp CLI.
Does it work in every modern browser? +
Yes — every modern browser supports WebP: Chrome, Firefox, Safari (since 2020), Edge and Opera.
About this tool
In shortConvert PNG to WebP — 20–40% smaller while preserving transparency, locally in your browser.
Since 2010 WebP has been the modern counterpart to PNG. Converting PNG to WebP is therefore one of the most rewarding web performance optimizations for everything that is not a photo: logos, icons, diagrams, screenshots, UI elements. WebP-Lossless preserves every pixel just as faithfully as PNG, but packs the file roughly 20–40% more efficiently. WebP-Lossy at a high quality setting is smaller still, with imperceptible differences.
Why is WebP-Lossless more efficient than PNG?PNG uses Deflate (LZ77 + Huffman, standardized in 1996). WebP-Lossless uses its own specification with extra levers: more global color reduction across pixel blocks, better prediction models for pixel values, an optimized entropy encoder. All of it was developed from 2010 onwards — fourteen years after PNG — drawing on a decade and a half of compression research.
Transparency is preserved.PNG's biggest advantage over JPG is the alpha channel. WebP keeps that advantage in both lossless and lossy modes. A PNG logo with a transparent background becomes a smaller WebP file that still works on any background.
Lossless vs. lossy.You choose. WebP-Lossless keeps every pixel exactly — recommended for logos, diagrams, screenshots. Savings: 20–40% versus PNG. WebP-Lossy at quality 80+ is significantly smaller, with minimal, mostly imperceptible loss — recommended for photo-PNGs or graphics with gradients. Savings can reach 60–80%.
Browser support in 2026.Universal for both lossless and lossy. Unless your audience consists entirely of users on ancient software, WebP is a safe choice.
Concrete size examples.An 800 KB PNG screenshot typically becomes a 320 KB WebP-Lossless or a 180 KB WebP-Lossy at quality 85. A 32 KB logo PNG becomes an 18 KB WebP-Lossless. A 14 MB photo composition as PNG becomes an 850 KB WebP-Lossy at quality 80 — a 16× reduction.
When isn't conversion worth it?With extreme pixel art using very few colors (under 16), PNG-8 can sometimes still beat WebP. That's a niche case — for normal web graphics WebP is almost always smaller.
Privacy.Local in your browser. No upload. Related: PNG vs. WebP, the complete WebP guide, image compression for web 2026.