Why WebP sometimes needs a JPEG copy
WebP is common on the modern web, but older desktop editors, office templates, vendor portals, and embedded systems may still reject it. JPEG remains a dependable interchange format for opaque photographs. Converting creates a compatible derivative without altering the original WebP, which is useful when the source must stay available for the website or for a later higher-quality export.
WebP may be lossy or lossless. A JPEG output is lossy either way. If the source was already a lossy WebP, the JPEG encoder works from previously approximated pixels and can add another generation of artifacts. Use a high initial setting and avoid cycling the file through multiple lossy formats.