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Whole-image tonality and effects run after resize/crop and before text overlay.
Image adjustments before and after
Photo with auto=compress
Portrait with blur adjustment

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Parameters

ParamRangeNotes
bri (brightness)0–200 (100 = unchanged)Whole-image brightness.
con (contrast)0–200Whole-image contrast.
sat (saturation)0–200Whole-image saturation.
hue-180–180Hue rotation in degrees.
blur0–100Gaussian blur on the full image. Distinct from blurFaces.
sharp (sharpen, usm)0–100Unsharp mask strength.
autoflagsenhance, redeye, compress, format (comma-separated).
monochromehex (#RRGGBB or bare)Tint the raster to a single brand colour. Preserves alpha. Applied after adjustments, before encode.
?w=900&bri=110&con=105&sat=95&hue=5
?w=900&blur=12&sharp=18
?w=900&auto=enhance
?w=900&auto=redeye
?w=900&auto=compress
?w=256&monochrome=7c3aed
auto=enhance applies a subtle brightness/contrast/saturation lift tuned for web delivery. auto=redeye runs face-aware redeye reduction when faces are detected (best-effort). auto=compress lowers output quality slightly for smaller files. auto=format is equivalent to format=auto. For face-specific blur (not whole-image), see Face detection & privacy.