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Convert PNG/JPG to WebP and see the size savings.
🔒 100% client-side — encoding happens locally in an in-browser canvas via canvas.toBlob. Your image never leaves your device.
WebP typically shrinks a PNG or JPEG by 25–70% at the same visual quality, which is why Google recommends it for faster page loads and better Core Web Vitals. This converter re-encodes your PNG or JPG into WebP entirely in the browser — the image is drawn into a local canvas and encoded with canvas.toBlob, so nothing is uploaded and the tool works offline.
The quality slider maps directly to the encoder's setting: 80% (the default) is the sweet spot for most photos, and 90%+ is a good choice for images with sharp text or UI details. Watch the savings bar as you drag — it compares the real output bytes against your original file, so you can stop at the lowest quality that still looks clean. If WebP comes out larger than the source, your image was already well compressed; lower the quality or keep the original.
WebP supports an alpha channel, so transparent PNGs stay transparent after conversion — no background fill is applied. One caveat: this tool converts a single static image. Animated content and EXIF metadata (orientation, camera data) are not carried through canvas re-encoding, so export a still frame or strip-sensitive files deliberately.
Every current browser both displays and encodes WebP, but Safari before version 14 cannot encode it — its canvas.toBlob silently falls back to PNG. This tool detects that fallback by checking the output MIME type and warns you instead of handing you a fake .webp file that is really a PNG inside. If you see the warning, switch to a current browser and the conversion will work.
The PNG to WebP Converter converts png to webpfrom one unit to another using the exact internationally defined conversion factors. Type a value, choose your source and target units, and the converted result is shown instantly — no waiting, no page reload.
Manual conversion is error-prone because it means memorizing ratios (how many feet in a meter, how many pints in a liter). This tool removes that friction: the conversion factor is built in, and the math is done to full precision with no rounding until the final displayed number.
Common uses: people reach for this tool when they need to look up a png to webp converter with quality slider, compress png to webp online, convert images to webp without upload, or reduce image size webp.
Browser-based tools like this one have a few real advantages over installed software or manual methods:
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