Preview JPEGs unblock workflows; they are not your archive tier
CMS, helpdesks, and newsletters often enforce MIME lists plus dual constraints on megabytes and long-edge pixels. `convert-heic-preview` is for getting a legible asset into the tool so editors can pick crops and writers can see composition—not for replacing the 300 dpi print file. Separate resize from quality: pick a long edge that fits the template, then tune JPEG quality for byte caps instead of crushing both at once (which moirés fabrics and chews small text). Many preview stacks ignore EXIF Orientation; decide whether to bake rotation into pixels. Batch coverage should log hashes or timestamps so the same shoot does not spawn untraceable “final-final” derivatives. After approval, re-run the publish pipeline from the untouched HEIC or a high-bit export, not from the lightweight preview.
Preview conversion flow
- Read CMS limits for pixels, weight, and color profile before `convert-heic-preview`.
- Spot-check portrait orientation—metadata alone is not enough on some hosts.
- Promote from master files for public hero slots after selection.