JPEG Quality Comparator (Side-by-Side)

Drop an image, see it re-encoded at JPEG quality 95 / 85 / 75 / 60 / 40 side by side, with file sizes. Useful for picking the lowest quality that still looks acceptable for your use case — saves 30-70% on page weight vs always shipping quality 95.

How to use the JPEG Quality Comparator (Side-by-Side)

Drop an image. The tool re-encodes at five JPEG quality levels (95, 85, 75, 60, 40) and shows each result side by side with the file size. Zoom in (use your browser zoom) to compare artifacts. Pick the lowest quality where you can't tell the difference at normal view size — usually 75-85 for photos, lower for logos and graphics.