320×100 ad size: the large mobile banner

Google Ads: “Large mobile banner”

Phones and appsup to 6 products≤ 150 KBdesign at 640×200
1.62%*click rate · 4.4× the average banner
0.9%of all banner views
#3of 15 sizes by clicks

CTR and views: a sample of our own data, September 1 to October 31, 2026. Updated monthly.

320 px100 px 320×100 banner ad example: several products with prices from a Shopify store (Blue Silk Tuxedo)
Real size · click the ad to open itJump to the specification ↓
All 15 sizes, drawn to scalepick another size ↓
Strips320x48300x50320x50468x60728x90320x100
Rectangles180x150200x200250x250300x250250x300480x320
Tall320x480160x600300x600

320×100 at a glance

Size
320 × 100 pixels, landscape
Names
Large mobile banner
Google Ads name
Large mobile banner
Screens
Phones and apps
File size
up to 150 KB (JPG, PNG, GIF)
In an Adeagle ad
6 products in a grid, or one product with its name
Share of impressions
0.9% in our network
Click rate
1.62% - 4.4× the average banner (small sample: it swings month to month)

How the 320×100 performs in our network

What we see on Adeagle
320×100 against the average banner
320×100 large mobile banner1.62%
Average banner0.37%
320×50 mobile leaderboard0.18%
300×250 medium rectangle0.46%
Click rate = counted clicks ÷ banner impressions, September 1 to October 31, 2026; 1,710,301 impressions of Shopify product ads in all sizes. 320×100 ranks 3 of 15 sizes by click rate and carried 0.9% of the impressions - a small sample (15,090 impressions), so its rate swings month to month.

When to use the 320×100

✓ Good forTwice the height of 320×50, and in our network about six times its click rate - the best mobile banner for products.
! Watch outFewer slots than 320×50, so it has less reach.

Design tips for 320×100 ads

  1. Tiles are tall (45×72): portrait photos of the product alone.
  2. If you choose one mobile size to test, test this one.
  3. Keep the file under 150 KB and export it at exactly 320×100; design at 640×200 so it stays sharp on phones.
  4. Show a price - it answers the first question before the click.

Sizes to run with the 320×100

One size never covers every slot. These fit the same screens:

320×500.18% click rate · phones and apps300×2500.46% click rate · desktop and phone300×500.35% click rate · phones and apps480×3201.01% click rate · phones and apps

Or see all 15 standard ad sizes on one page. Adeagle makes every one of them from your product photos, names and prices - no design work, and a new product appears in every size the day you add it.

Sources: Adeagle network data (September 1 to October 31, 2026); Google Ads image ad specifications. The example ads use the products of Adeagle's demo store.

More banners

BannersBanner ad examples

60 real banner ads in every standard size, with what each kind gets clicked - click one to land on the product.

Free toolCTR calculator

Your click-through rate, and how it compares with a typical small store.

Questions about the 320×100 ad size

A 320×100 ad is called the large mobile banner. Google Ads lists it as "Large mobile banner".

Phones: under the header, between paragraphs and above comments on mobile pages and in apps.

150 KB per image in Google Ads, as a JPG, PNG or GIF; most other networks use the same limit. Design at 2× (640×200) for sharp phone screens and export at 320×100.

Adeagle shows 6 products in a grid, or one product with its name in this size, each with its price if you choose.

Twice the height of 320×50, and in our network about six times its click rate - the best mobile banner for products. In our network it got a 1.62% click rate - 4.4× the average banner (0.37%) - and was 0.9% of all banner impressions.