Quality Controls the visual quality of the output JPEG. Higher values result in better quality and larger file sizes. Jpegli's perceptual model means that a quality of 90 is often visually identical to the original, but much smaller. warning Chroma Subsampling Reduce color detail (while keeping brightness sharp) to shrink files. This works because human eyes are less sensitive to color shifts than to brightness changes. Learn more ↗ 4:2:0 (Photos) Reduces color resolution by 75% (best general savings for photos). 4:4:4 (Graphics/Text) Preserves full color resolution (prevents color bleed on sharp edges). 4:2:2 Reduces horizontal color resolution only. warning Color Encoding Choose the color model used during compression. The output is always a standard, compatible JPEG. XYB (perceptual) ↗, from the JPEG XL project, often gives smaller files for the same visual quality. YCbCr (legacy) ↗ matches classic JPEG math for maximum compatibility in strict, older workflows. XYB (Perceptual) — Recommended Legacy YCbCr warning Progressive Mode Progressive JPEG shows a quick full-image preview that sharpens as it downloads, which feels faster on slow networks. Sequential loads from top to bottom and can decode slightly faster on older devices. Learn more ↗ On (More Scans) Default. More scans can improve perceived loading. On (Normal) Fewer progressive stages. Off (Sequential) Standard top-to-bottom decoding. warning Adaptive Quantization Smarter compression that spends more data (bits) on detailed, complex areas of the image and less on smooth, simple areas. This generally improves visual quality at a given file size. Highly recommended. Enable Adaptive Quantization Transparency & Background JPEG files cannot be transparent. When converting an image with transparent areas (like a PNG or SVG), this color will be used for the background. This is also known as the "matte" color. Learn more ↗ Matte / Background Color Grayscale Remove color entirely to greatly reduce size (great for ...
First seen: 2025-10-17 13:53
Last seen: 2025-10-17 17:53