In practice, it usually makes little visible difference whether you convert color space before or after final resize and sharpening. Sharpening in Adobe RGB, ProPhoto RGB, or sRGB will generally produce very similar results.

The more important workflow rules are:

• resize before final output sharpening
• if reducing bit depth, convert color space before converting to 8-bit

A sensible order is:

1. resize to the final output dimensions
2. apply final sharpening for that size
3. convert to the target color space (for example, sRGB for web)
4. convert to 8-bit if needed for export

Keeping the color space conversion until the end is a common recommendation, since converting to a smaller gamut can potentially reduce some tonal or color nuance. But based on the community feedback, either order around sharpening is unlikely to create meaningful differences in most real-world images.