Few things frustrate a marketplace seller more than waking up to a suppressed listing. You check the seller forums, and support keeps repeating the same phrase: "your main image does not have a pure white background." The photo looks white to you. Your product is on a white seamless backdrop. What is going on?

The short answer is that Amazon's image checker is not judging by human eyes. It samples the pixels at the edges of your image and compares them against an exact value: RGB 255, 255, 255. If your "white" is actually 250, 250, 250 — or if a soft shadow, a reflection, or a translucent PNG edge bleeds into the frame — the checker can flag the image, and the listing can be temporarily removed from search until you fix it. This guide walks through the exact rules, the reasons sellers fail, and a repeatable checklist you can run before every upload.

1. The exact rules that matter

Amazon's product image guide (help page G1881) sets out the main image requirements. The parts that cause the most suppressions are:

  • Pure white background: RGB values of 255, 255, 255. This is a hard number, not a "close enough" number.
  • Product fills roughly 85% of the frame: the image should show the product at 85% of the total area. Too small and it looks lost; too large and it may be cropped in thumbnails.
  • Minimum size: the longest side must be between 500 and 10,000 pixels. At 1,000 pixels or more, Amazon enables the zoom feature — the industry recommendation is 1,600px or higher for quality zoom.
  • No text, logos, watermarks, badges or props: the main image must be the product alone (with only what is included in the sale).
  • Format: JPEG is recommended; PNG and TIFF are accepted. The image must be in RGB color mode.

Two details are easy to miss. First, a transparent PNG is not the same as a white background. If your cutout has transparent corners, the checker may not register the background as white. Second, the 85% rule applies to the bounding box of the product — a tiny product in the middle of a huge white canvas will fail.

2. Why "white" photos still get rejected

Based on the most common complaints in seller communities, suppressions usually come from one of these four causes:

  • Off-white whites. A backdrop photographed under warm or cool light often lands at RGB 245–252. It looks white, but it is not 255. This is the single most common cause.
  • Shadows. A visible cast shadow under the product makes the background non-uniform. Even a "barely visible" shadow can be picked up by the pixel scan.
  • Reflections and gradients. A glossy floor reflection or a gradient from white to grey reads as a non-white background.
  • Transparent PNG edges. Semi-transparent edge pixels get composited against whatever the checker uses as its backdrop, producing a fringe that fails the scan.

White products are a special case: a white towel or a white bottle on a white background can literally "disappear." The policy-compliant answer is to add a subtle contact shadow — Amazon's guidelines allow minimal shadows around the product — so the edges of the product read clearly against the background.

3. The fastest safe workflow

You do not need Photoshop to produce compliant images consistently. A repeatable local workflow looks like this:

  1. Remove the background with a tolerance-based remover (our Background Remover tool). For product shots on solid or near-solid backdrops this gives a clean cutout in seconds.
  2. Place the cutout on a true white canvas (RGB 255,255,255) using the White Background Maker. This eliminates off-white backdrops and stray shadows in one step.
  3. For white products, add a light contact shadow so the product separates from the background — still compliant, because it is a minimal shadow.
  4. Export at the right size. Resize to at least 1,000px on the longest side; 1,600px is better for zoom.
  5. Run the Amazon Photo Checker before uploading. It samples the border area for whiteness, measures the product's fill ratio, and verifies the size — then it tells you pass or fail and can generate a fixed version with one click.

Working locally matters here for two reasons: your unreleased product images never leave your device, and you avoid per-image fees from cloud-based tools. Every step above runs entirely in your browser.

4. A checklist to paste into your SOP

  • Background: RGB 255,255,255 at the edges (no shadows, no gradients, no reflections).
  • Product: centered, complete, one instance, ~85% of frame, no text or overlays.
  • Size: longest side ≥ 1,000px (recommend 1,600px+), ≤ 10,000px, RGB mode, JPEG or PNG.
  • White products: add a subtle contact shadow so edges are visible.
  • Run the checker, fix what it flags, re-check, then upload.

Suppressions are rarely permanent. The fix is usually a five-minute re-export once you understand the pixel-level rule. Keep this checklist handy, and your main images will stop being the reason your traffic disappears.

没有什么比一觉醒来发现 listing 被压制更让跨境卖家头疼的事了。你去卖家论坛查，客服翻来覆去只有一句话："你的主图背景不是纯白色。"照片看起来明明是白的，产品也确实摆在白色背景前，到底哪里出了问题？

答案很简单：亚马逊的图片审核不是靠人眼，而是靠像素扫描。它取样图片边缘的像素，和一个精确值做比对：RGB 255, 255, 255。如果你的"白"其实是 250, 250, 250，或者画面边缘混入了一点阴影、反光、或者透明 PNG 的半透明边，审核程序就会判定不合规，listing 会被临时移出搜索，直到你修好为止。这篇指南会讲清楚规则、卖家失败的原因，以及一份每次上传前都能跑一遍的检查清单。

1. 真正起作用的规则

亚马逊官方图片指南（帮助页 G1881）对主图有明确要求，最容易导致压制的几条是：

  • 纯白背景：RGB 值必须为 255, 255, 255。这是硬性数字，不是"差不多白"。
  • 产品占画面约 85%：主图要展示产品占整体面积的 85%。太小显得没存在感，太大会被缩略图裁掉。
  • 最小尺寸：最长边 500–10,000 像素。达到 1000px 以上会启用缩放功能——行业建议 1600px 以上以获得更好的缩放画质。
  • 无文字、logo、水印、徽章、道具：主图只能有产品本身（以及随附的配件）。
  • 格式：推荐 JPEG，PNG 和 TIFF 也可接受，必须是 RGB 色彩模式。

有两个细节最容易被忽略。第一，透明 PNG 不等于白底——如果你的抠图角落是透明的，审核程序可能不认为背景是白色。第二，85% 规则针对的是产品包围盒——一个巨大白画布中间的小小产品，同样不合格。

2. 为什么"看着白"的照片还是被拒

综合卖家社区里最常见的抱怨，压制通常来自以下四种原因之一：

  • 不够白的白。背景纸在暖光或冷光下拍出来往往是 RGB 245–252。看着是白的，但不是 255。这是最常见的单一原因。
  • 阴影。产品下方可见的投影会让背景不均匀。哪怕"肉眼几乎看不见"的阴影，也可能被像素扫描抓出来。
  • 反光与渐变。地面的光泽倒影、从白到灰的渐变，都会被判为非纯白背景。
  • 透明 PNG 边缘。半透明的边缘像素会被合成到审核程序自己的底上，形成一圈不达标的白边。

白色产品是个特殊情况：白毛巾、白瓶子放在白底上，会真的"隐身"。合规的解法是加一个轻微的接触阴影——亚马逊规则允许产品周围有最小限度的阴影——让产品边缘在白底上清晰地"读"出来。

3. 最快的安全工作流

不需要 Photoshop，也可以稳定地产出合规图片。一套可复用的本地流程是这样的：

  1. 抠图：用基于容差的抠图工具（本站的背景移除工具）。产品照只要背景是纯色或接近纯色，几秒就能得到干净的透明抠图。
  2. 放到纯白画布上：用"一键纯白底"把抠图放到 RGB 255,255,255 的真白底上，一步消除偏色的背景纸和杂影。
  3. 白色产品加接触阴影：让产品和白底分离——仍然合规，因为只是最小阴影。
  4. 按正确尺寸导出：最长边至少 1000px，1600px 以上缩放更佳。
  5. 上传前跑一遍 Amazon 合规检查器：它采样边缘区域的白度、测量产品占比、核对尺寸，给出通过/不通过报告，还能一键生成修复版。

本地处理在这里有两个价值：未发布的产品图不会离开你的设备；也省掉了云端工具按张计费的成本。以上每一步都在浏览器本地完成。

4. 直接复制进 SOP 的检查清单

  • 背景：边缘区域 RGB 255,255,255（无阴影、无渐变、无反光）。
  • 产品：居中、完整、只出现一次、约占画面 85%，无文字无叠加物。
  • 尺寸：最长边 ≥ 1000px（建议 1600px+），≤ 10000px，RGB 模式，JPEG 或 PNG。
  • 白色产品：加轻微接触阴影，让边缘可见。
  • 上传前跑检查器，修掉标记项，再查一遍，然后上传。

压制很少是永久性的。只要你理解了像素级规则，修复通常只是五分钟的重新导出。把这份清单留在手边，主图就再也不会成为你流量消失的原因。