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Marketplace compliance, as an API

Validate your listing images before a marketplace suppresses them.

Check product images against Amazon, Walmart, eBay & Etsy image rules — background, resolution, aspect ratio, watermarks — and get a plain-English reason for every check, before you list. Stop guessing why an image was rejected or quietly buried.

Why listing images get rejected or buried

Each marketplace has its own rules, and breaking one can suppress the listing or kill its search ranking — often with no clear reason given.

Background isn't pure white

Amazon's main image must be #FFFFFF. A soft grey or off-white studio backdrop fails — and you can't tell by eye.

Resolution too low

Under ~1000px won't zoom; many marketplaces reject or down-rank it outright.

Wrong aspect ratio

Square required on some, landscape-or-square on others — the wrong shape gets cropped or refused.

Watermark / text on the hero

Logos, badges, or promo text on the main image break the rules on most marketplaces.

Product fills too little of the frame

Too much empty space and the listing looks weak and can be flagged.

Near-white that fails the strict check

Looks white to you; reads (250,250,250) to the rule. The exact thing that bounces silently.

Check a real image

Pick a marketplace, drop a product photo, and the live engine returns the verdict — what passes, what fails, and why.

Rules are verified against each marketplace's official image policy and versioned per pack.

Request early access

Tell us where to send it and what gets rejected, so we build the checks against the marketplaces you sell on.

No spam, no list — we'll only use this to talk to you about AssetLint.

For platforms & agencies — embed the API

Managing many catalogues or sellers? Run compliance across all of them via the API.