Fast Resize (libvips)

Batch image resize using libvips. Material throughput improvement over ImageMagick on large libraries — typical 5–10× speed-up and lower peak memory.

When to use

• Batch is >500 images.
• The user is feeling ImageMagick's slowness (or is about to).
• The job is "resize this directory" — pure resize without compositing or filters.

Do not use this skill for:

• Small batches (<100 images) — batch-resize is fine, no point swapping engines.
• Resize-with-filter / resize-with-text / multi-op pipelines — ImageMagick is the better tool for compound work.

Inputs