JPG to WebP - Convert JPG photos to WebP for modern web optimization.

Quality factor

WebP lossy quality runs 0 to 100 and is not directly comparable to JPG quality numbers. WebP quality 80 produces roughly the same visual fidelity as JPG quality 90 while being 25 to 35 percent smaller. Quality 75 is the standard for high traffic web images. Quality below 60 introduces visible smoothing.

Compression method (effort)

The method parameter (0 to 6) controls how exhaustively the encoder searches for the best prediction mode. Method 6 takes the longest but produces the smallest file. Method 4 is the practical default for batch processing. Method 0 is essentially real-time encoding with larger output.

Sharp YUV conversion

When encoding lossy WebP, RGB pixels are converted to YUV before quantization. The default conversion can soften edges. Enabling the sharp YUV option uses a slower but more accurate conversion that preserves edge contrast, which matters for images with text overlays or graphic elements alongside the photograph.

Metadata preservation

JPG EXIF, IPTC, and ICC profile data can be carried over into WebP. Preserve the ICC profile if the source JPG used a wide-gamut color space such as Display P3 or Adobe RGB. Strip EXIF and IPTC if the images will be published publicly and may contain GPS coordinates or camera serials.

Auto-filter and spatial noise shaping

Auto-filter lets the encoder pick the optimal in-loop deblocking strength per region. Spatial noise shaping (SNS, default 50) controls how aggressively the encoder allocates bits to detailed areas versus smooth ones. Higher SNS values protect detailed regions at the cost of background fidelity.