WEBP に JPGコンバーター — 高速＆無料

Converting WebP to JPG produces a JPEG image that is compatible with all operating systems, image editors, and services that do not support the WebP format. WebP supports both lossy and lossless modes along with transparency; JPEG uses lossy DCT compression without an alpha channel. If the source WebP was lossless, the pixel data is decoded losslessly before JPEG encoding, so the quality loss is determined entirely by the JPEG quality setting (85% by default). If the source was lossy WebP, the pixels are decoded and re-encoded to JPEG — a generation loss occurs because two lossy algorithms are applied sequentially; using a high JPEG quality setting (90-95%) keeps the loss minimal. Transparent regions are composited over a white background since JPEG does not support transparency. EXIF metadata present in the WebP file is transferred to the JPEG output. 1converter performs this conversion using ImageMagick with sRGB colour space normalisation.