Direct answer: Keep one master folder of uncropped originals, export marketplace copies into dated subfolders, and run GetPicTools as the final browser pass for resize, convert, compress, EXIF strip, and rename. That single habit prevents most rejection loops across Amazon, Shopify, eBay, Etsy, and TikTok Shop.
Most catalog chaos starts when editors save over masters. After a seasonal crop for mobile ads, the original square packshot is gone, and the next marketplace request forces a reshoot. Separate masters/ from exports/2026-07-20-amazon/ style folders before any tool touches the files. Masters stay untouched; exports are disposable and reproducible.
Write the destination rules once: pixel size, background, format preference, and filename pattern. Amazon often wants large square JPEGs with clean backgrounds; Shopify and TikTok Shop may prefer lighter WebP where accepted; print inserts may need higher-resolution PNG. Do not invent rules per SKU under deadline pressure. Apply the same checklist every time.
Run GetPicTools last, not first. Batch resize to the destination canvas, convert to the accepted format, compress with a 100% zoom spot-check on text and edges, strip EXIF you do not need for buyers, and rename with product, color, and role (linen-set-sage-main.webp). Prefer sRGB for web delivery. If a platform rejects a file, fix the export folder—never the master—then re-run the same pass.
Multilingual teams should keep the checklist identical in English, Chinese, and Japanese so reviewers mark the same boxes. Store the pass/fail note next to the export folder. Consistency beats last-minute image firefighting, and the next SKU drop starts from a known-good pipeline instead of a pile of one-off exports.
GetPicTools: https://getpictools.com — questions to sapsap@qq.com.
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