What this means: Etsy serves many sized preview links. Asking for a “2000-wide” preview can return an image that is 2000px on the edge even when your uploaded file was smaller — the preview was scaled up for display.
If you ignore it: you think you “passed 2000px,” while zoom stays off because the real upload is still under the floor. A bigger preview request can even stretch past the true file and hide softness until a buyer zooms.
How I fix it: I stop guessing from sized links. I measure the full-size image when the page exposes it, or I measure the file on my computer before upload. TagPeek’s extension prefers full-size when available; the free site tool reads your local file directly. Pair with Rule 06 and Rule 01.
If I keep notes on listings, I write down the measured full-size dimensions — not the size token in a preview link — so I do not fool myself after the next page change.
这条要求什么：Etsy 会给出很多带尺寸的预览链接。去要一张「宽 2000」的预览，边长可能正好是 2000 —— 哪怕你上传的原图更小，因为预览被放大显示了。
不过会怎样：你以为「过了 2000px」，放大却仍关着，因为真正上传的文件还不够。要更大预览时，还可能被拉得超过原图，糊感要等买家放大才露出来。
怎么修：我不再靠带尺寸的链接猜。页面能拿到时量原尺寸图，或者上传前直接量电脑里的文件。TagPeek 扩展优先读原尺寸；网站免费工具直接读本地文件。可与 规则 06、规则 01 一起看。
如果我记商品笔记，会写下量到的原尺寸数字，不记预览链接里的尺寸字样，免得页面一变又骗自己。
Related: the 794px preview trap →相关：794px 预览陷阱 → · From our size-check experiments on real pages. · 来自我们在真实页面上的尺寸核对。