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.changeset/eleven-pans-poke.md

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+---
+'@responsive-image/build-utils': minor
+'@responsive-image/vite-plugin': minor
+'@responsive-image/webpack': minor
+---
+
+Do not apply default value for quality
+
+Instead we rely on `sharp`'s own defaults. For .avif images this will use a lower quality setting (50 instead of 80), which produces smaller sizes with almost the same visual quality as e.g. 80 for jpegs.