Amazon Main Image Optimisation: the Compliance Checks and What You Can Still Do
Amazon's main image rules are few and mechanical: pure white at RGB 255,255,255, the product filling about 85% of the frame, no text, logos, watermarks, borders or props, and a longest side of at least 1,000 px for zoom to work at all with 1,600 px or more recommended for a good zoom experience (500 px is the bare minimum to appear on the site, 10,000 px the ceiling). Everything else is permitted, and the permitted list — angle, tight cropping, every accessory that ships in the box, a contact shadow — is where click-through actually moves.
The main image is the only listing asset Amazon inspects mechanically, and the only one whose failure removes you from search rather than merely costing clicks. This page is the procedure: five checks with numeric pass conditions you can run on a file in twenty minutes, then the larger half of the job — the composition choices that are fully permitted and mostly unused.
The five checks, in the order failures happen
| Check | Pass condition | How you verify it |
|---|---|---|
| Background | RGB 255,255,255 across the whole field | Sample the corners and the band just outside the silhouette |
| Frame fill | Product bounding box ≥ 85% of the frame | Trim the white, compare the trimmed box to the canvas |
| Resolution | 500 px to appear, 1,000 px for zoom, 1,600 px+ recommended, 10,000 px ceiling | Read the longest side |
| Overlays | No text, logo, watermark, border, colour block or badge | Zoom to 400% and inspect the corners |
| Contents | Only what ships in the box, out of its packaging | Compare the image against the offer, unit count included |
Check 1: the background is whiter than it looks
Amazon's standard is RGB 255,255,255 exactly. The failure is almost never a background someone chose; it is one someone photographed. A white sweep lit at f/8 lands around 248–252, and neither your monitor nor your eye at 100% zoom shows you the difference.
Sample it instead: the top-left corner, the top-right, and — the one that catches people — the band of pixels immediately outside the product's silhouette, where a bad mask leaves a grey halo at 250 or 251. At the command line, magick main.jpg -format "%[pixel:p{0,0}]" info: returns the corner pixel.
Two things are permitted that people wrongly avoid: a contact shadow under the product, which is part of the product's rendering rather than the background, and a clean mask on a genuinely white sweep without flat-filling afterwards. A reflection plane, a gradient or a "white-ish" studio floor is not.
Check 2: measure the 85%, do not judge it
Amazon says the product should fill at least 85% of the frame but does not publish how that is measured, and 85% of the frame's area is a very different target from 85% of its longest dimension. The reading that survives moderation is the bounding box: the smallest rectangle containing the product should span at least 85% of the frame on the product's longer axis.
Measure it by trimming. magick main.jpg -fuzz 1% -trim -format "%wx%h in %Wx%H" info: prints the trimmed box against the canvas; divide and you have your number. A bottle at 78% of frame height may never be flagged, but it renders smaller than a competitor's in a search grid, which is the more expensive failure. Leave the margin even; cropping the product at the frame edge is a clear violation.
Checks 3 and 4: the numbers Amazon publishes, and what "no graphics" covers
The zoom threshold is stated as a pair, and collapsing it into one figure is where most advice goes wrong. Amazon's site standards say the smallest a file can be and still appear on the site is 500 px on the longest side; the smallest that still triggers zoom is 1,000 px; and the optimal zoom experience needs 1,600 px or larger. The ceiling is 10,000 px.
So 1,000 px is where zoom exists at all, and 1,600 px+ is what Amazon recommends for it to be worth having. Several third-party guides state that zoom only activates at 1,600 px; that is not Amazon's wording, and the 1,000/1,600 pair is the published one. Export at 2,000 × 2,000 square and you clear both thresholds. JPEG is preferred; PNG, TIFF and non-animated GIF are accepted. Work in sRGB.
The ban is broader than text. Main images must not carry text, logos, watermarks, borders, colour blocks or other graphics, over the product or in the background: your own brand mark in a corner, a photographer's stamp, a keyline around the frame, any badge. Rank and review claims such as "#1 Best Seller" are prohibited across the whole listing, gallery included. A logo physically printed on the product is not an overlay and is fine; composited versus printed is the entire test.
Three categories override the generic rules:
- Shoes: a single shoe, facing left, at a 45-degree angle. Not the pair.
- Adult apparel: the garment on a human model. Multi-pack apparel and accessories are shot flat, off-model.
- Books, music, video and DVD: front cover art filling 100% of the frame, no jewel case, sticker or cellophane.
What you are allowed to do, which is most of the interesting work
Permitted, and under-used
- Everything that ships in the box, arranged around the hero unit: attachments, filters, case, cable.
- An angle that explains the object: a three-quarter view carries depth a flat elevation does not.
- Cropping tighter than competitors, up to and past 85%, so the product renders larger in search.
- A contact shadow, and colour graded to the real product, not the studio's white balance.
- Showing the true count on a multipack, so image and offer agree.
Not permitted, however it is framed
- Props that do not ship: the tripod under the camera, the batteries beside the toy.
- Retail packaging as the subject, unless the packaging is the product.
- Renders, illustrations, mock-ups and placeholders. It must be a photograph of the actual product.
- A second unit added to make the offer look larger than it is.
- Any text, including a size or quantity that "is just information".
The permitted column is where click-through moves. Everything forbidden in slot one is allowed from slot two onward: you have one main image plus up to eight further slots, the first seven of which display, six if you publish a video. The discipline is not to fight for text in slot one but to make it larger and more legible, and push every claim one slot right.
How to know whether the new main image is better
Not by looking at it beside the old one. Manage Your Experiments A/B tests the main image and needs a Professional selling account, Brand Registry enrolment as Rights Owner or Brand Representative, and an ASIN with enough recent traffic — Amazon does not publish that threshold, and ineligible ASINs cannot be selected. Amazon suggests eight to ten weeks, or four on the run-to-significance setting.
If the ASIN is too small to qualify, use Brand Analytics' Search Query Performance report: impressions, clicks, cart adds and purchases per query alongside the query total, so you can compare your click-through rate on a keyword against the market's. A main image change should move clicks per impression. If it moves purchases without moving clicks, something else changed at the same time.
Which of these to do first
If the listing is suppressed, fix background, then overlays, then resolution — those three trigger removal. If it is live and healthy, do one compliance pass and then spend the time on frame fill and angle, the two levers that change how large you render in a results grid. If you are still shooting, brief it at 2,000 × 2,000, pure white, three-quarter angle, everything in the box.
Common questions
Is a shadow allowed on the Amazon main image?
Yes. A contact or drop shadow cast by the product is part of the photograph and does not breach the pure-white rule. What breaches it is a background that is not RGB 255,255,255: a grey sweep, a gradient, a reflective plane, or a halo of near-white pixels left by a sloppy mask.
Can I put my brand logo on the main image?
Not as an overlay. A logo composited onto the photograph or placed in a corner is a graphic and is prohibited. A logo physically printed, embossed or moulded onto the product you photographed is part of the product and is fine.
What exactly counts as 85% frame fill?
Amazon states the product should fill at least 85% of the frame but does not publish the measurement method. Treat it as the product's bounding box spanning at least 85% of the frame on its longer axis. Under-filling is rarely enforced hard, but it makes your thumbnail smaller than a competitor's.
How big should the file be for zoom to work?
1,000 px on the longest side is the floor at which zoom activates; 1,600 px or more is what Amazon recommends for a good zoom experience. 500 px is the minimum to appear at all, 10,000 px the maximum. Exporting at 2,000 × 2,000 clears every threshold.
This page is written by Graflio, so read our own column with appropriate suspicion. Competitor facts are the vendors’ published information as of August 2026 and change often — check before you buy.
Paste one ASIN. Get the whole set.
Graflio reads the live listing and its reviews, studies the best sellers around it, then renders a full set of on-brand infographics — every image still editable in a layer studio. €10 of credits free, no card.
Try Graflio free →