Choose the background
Transparent pixels cannot exist in JPEG. Select white or another color instead of leaving the browser to choose an ambiguous default.
PNG → JPEG · one image
Create a JPEG locally, choose how transparent pixels are filled, and compare the actual output size. JPEG is lossy, so inspect the result before download.
Choose one PNG. JPEG output, 85% quality and a white transparency background are selected initially.
Choose a JPEG, PNG, or WebP image to begin.
Direct answer
JPEG has no alpha channel and uses lossy compression. ImgTurbo first fills transparent pixels with your chosen color, then encodes the rendered canvas at the selected quality. A smaller result is common for photos, not guaranteed.
Transparent pixels cannot exist in JPEG. Select white or another color instead of leaving the browser to choose an ambiguous default.
Lower JPEG quality can reduce bytes but remove visible detail and introduce artifacts, especially around text and sharp edges.
Keep PNG for transparency, screenshots, logos, flat graphics or workflows that require lossless pixel data.
.jpg file.JPEG has no alpha channel. ImgTurbo fills the canvas with the selected background color before drawing the PNG and encoding JPEG.
No. Photographic PNGs often become smaller, but output depends on the pixels, dimensions, quality and browser encoder. The result panel measures your file.
Yes. JPEG is lossy. Lower quality can reduce file size while removing more detail, so inspect the preview and downloaded file.
No. The file bytes stay in this browser. Optional consent-based analytics does not receive the image.
Technical statements last reviewed 10 September 2026.