Amazon Brand Store content blocks: the exact specs for all 13
Amazon's Storefront builder looks like a simple drag-and-drop tool until the first image comes back blurry or a video won't upload. Almost every rejection at this stage comes down to the same thing — a block was used with an image or a line count that doesn't match what that specific block actually needs.
There are 13 content blocks available across Amazon's Storefront builder, and each has its own dimensions, limits or file requirements. This is the reference we keep close whenever we're building one.
Layout blocks: Split Section and Product Block
Split Section is the base layout most pages are built from. In its variable-height layouts, it supports Product (linked via ASIN), Image, or Text elements. In basic layouts it opens up to Image, Image with Text, Shoppable Image, Text, Video and Background Video as well. Images used inside a Split Section should be 3,000 pixels wide.
Product Block connects directly to an ASIN and can show either Amazon's own auto-populated product details or your own custom “product editorial” copy instead — useful when the stock title and bullets don't tell the story you want on this particular page.
Image and text blocks
Image Block is the simplest option — a 3,000px-wide image that hyperlinks straight to the linked ASIN's listing. Image with Text adds copy on top of or beside a 3,000px-wide image, capped at a 2-line headline and 3 lines of body text, in either an inline or overlay display mode. Overlay mode lets you control text size, alignment, position, colour, opacity and padding, and how far the text sits from the edge of the image.
Shoppable Image lets you tag up to 6 products directly onto pins within a single image, each linked by ASIN — a good option for a lifestyle shot showing several products at once. Text Block is the plain-copy option, capped at 20 lines, with one formatting rule worth remembering: no random or camel-casing, and no all-caps unless the entire field is deliberately set that way.
Video blocks
Video needs a minimum of 1,280 x 640 pixels, though 1,920 x 1,080 is the recommended size, and the file has to stay under 100MB in one of a handful of supported formats (avi, mov, mpg, mpeg, mp4, m4a, m4v, m4p). It also needs a cover image — minimum 3,000 x 1,500 pixels, recommended 3,000 x 1,688 pixels at 300 ppi.
Background Video works differently: it auto-plays on loop with no sound, so there's no cover image to think about, but the clip itself has to run between 2 and 20 seconds, at a minimum of 1,280 x 640 pixels and a maximum height of 1,500 pixels.
Product-driven blocks
Product Grid can be populated three ways — by keyword (automatic), by searching individual ASINs, or by pasting a full ASIN list — and supports up to 500 ASINs, with the option to auto-hide anything currently out of stock. Gallery needs between 3 and 8 images, each at least 1,500 x 750 pixels, displayed with arrow navigation and an optional headline and description.
The last three are the ones you don't actually design: Best-Selling Products and Recommended Products are both auto-generated and non-editable — the second updates per visitor — and Featured Deals pulls from your live deals automatically, up to 500 ASINs, entered as a comma-separated list rather than styled by hand.
Getting the specs right the first time
The pattern across all 13 blocks is the same: Amazon works to precise pixel dimensions, hard character or line caps, and specific file formats, not approximations. A photo that's “close enough” to 3,000px wide, or a video that's 105MB instead of under 100MB, is enough to get flagged. It's much faster to design to the exact spec for the block you're using than to build first and resize after.
If you're putting a Storefront together and want the blocks built to spec the first time round, that's the kind of detail work we handle at ARTH.
Questions we hear a lot
What happens if I upload an image that's smaller than the recommended size?
Amazon will generally still accept it if it clears the stated minimum, but anything below that gets rejected outright, and images sized well below the recommendation often look soft or pixelated once stretched to fill the block.
Which block should I use to highlight one bestseller versus my whole catalog?
For a single product, Product Block or Image with Text works well since you can add custom copy around it. For the full catalog, Product Grid is built for that — it can pull in up to 500 ASINs automatically by keyword or list.
Can I edit the Best-Selling Products or Recommended Products blocks?
No, both are automatically generated by Amazon and update on their own — Best-Selling Products reflects your actual sales data, and Recommended Products changes per visitor. Neither can be manually styled or reordered.
Do Background Video blocks need sound?
No, and they can't have any — Background Video always auto-plays on a silent loop by design, which is also why it doesn't need a separate cover image the way the standalone Video block does.
How many content blocks should one storefront page actually have?
There's no fixed Amazon rule on this, but pages that mix a handful of block types — say, a Split Section, an Image with Text, a Product Grid and a Gallery — tend to read better than a page built from ten of the same block stacked in a row. Treat each block as a distinct beat, not filler.
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