300x600 banner ad maker

300x600 half-page ads: room for a whole story

The 300 x 600 half page is a tall unit in desktop sidebars, and one of the few display sizes with room for a product, a headline, proof and a button at once. StoreToAds does not make fixed 300 x 600 files yet. Here is how to use the height well, and what we make instead.

Launching soon. Early access opens in small batches; we'll email you first.

The 300x600 at a glance

300 x 600
Size300 x 600 px (ratio 1:2)
Google's nameHalf-page ad
Where it showsRight-hand sidebars on desktop pages, sometimes staying in view as you scroll
File limit150 KB for uploaded image ads in Google Ads
Google Ads Help, uploaded display ads specifications, October 2026.

Use the height like a feed ad

A half page reads top to bottom, a lot like a 4:5 feed ad squeezed narrower. Stack it:

  1. The hook at the top: the line that earns the next glance.
  2. The product in the middle, as large as the width allows.
  3. Proof under it: a star rating and review count, or one short quote.
  4. Price and button at the bottom.

The 300 px width is the real limit. Headlines need short words over two or three lines, and long product names may need a smaller size than you would like.

What StoreToAds makes instead

The closest file in our set is the 9:16 vertical at 1080 x 1920: a tall version of the ad that Google's responsive display ads accept as a vertical image (900 x 1600 recommended). Along with the 1200 x 628 landscape and the 1080 x 1080 square, it gives Google tall, wide and square images to arrange. Google lists 300 x 600 among its common desktop sizes, and responsive display ads adjust to fill it.

Fixed half-page files and HTML5 banners are not offered yet. If a site sells the slot as an exact 300 x 600 upload, use a designer or a banner tool for that buy.

Quote wall for Mira, our fictional sample skincare brand: the top-to-bottom order (claim, product, proof, price) a half page also needs.
Fictional sampleQuote wall for Mira, our fictional sample skincare brand: the top-to-bottom order (claim, product, proof, price) a half page also needs.

How it works

How StoreToAds makes it

  1. 01

    Paste your store

    Any store with product pages works: Shopify, WooCommerce, Wix, Squarespace, PrestaShop and more.

  2. 02

    Get a tall version of every ad

    Each ad comes in 1080 x 1920 alongside the landscape and square images, all from one checked design.

  3. 03

    Give Google all three shapes

    Upload vertical, landscape and square images to a responsive display ad so Google can fill tall sidebar slots too.

Examples

Fictional sample brands. Drag across an ad to see the store photo it was made from; our engine designed each one from that photo and the store's data.

Sample stores
The finished Mira ad: BenefitMira Vitamin C Serum 15%: the product photo from the store

Mira

Skincare

Vitamin C Serum 15%

  • Price checked
  • Reviews checked
  • 5 sizes

Reason to buy: Benefit

Make this for my store

Questions

Is a 9:16 image the same as a 300x600?

No. 300 x 600 is 1:2, a little taller and narrower than 9:16. They serve similar tall slots, but a fixed 300 x 600 placement needs an exact file, which we do not make.

Can StoreToAds make a 300x600?

Not yet. Fixed banner sizes and HTML5 banners are not offered. Every ad includes landscape, square and vertical images for responsive display ads.

Where do half-page ads appear?

Mostly in the right-hand sidebars of desktop news and content sites. The slot is much less common on phones, so a half page is mainly a desktop buy.