336 × 280Large Rectangle
A slightly larger Medium Rectangle for the same places on desktop, where the column is wide enough. The extra room goes to the headline; design it together with the 300 × 250 and let both carry the same message.
Specs
| Size | 336 × 280 pixels |
|---|---|
| Aspect ratio | 6:5 (1.2:1) |
| Shape | Square |
| Runs on | Display networks and ad servers |
| Safe zone | 13 px from every edge |
| Smallest text | 11 px for text and buttons, 16 px for headlines |
| Static file | Up to 150 KB |
| Animation | HTML5 or animated GIF, up to 15 seconds |
| Spec source | support.google.com, checked Oct 16, 2026 |
Where it runs
| Package | Delivers |
|---|---|
| Google Ads · HTML5Specs checked | JPG or PNG, up to 150 KBHTML5 ZIP with clickTag, ZIP up to 600 KB |
| Google Ads · imagesSpecs checked | JPG or PNG, up to 150 KBAnimated GIF, up to 150 KB |
| Campaign Manager 360 · DV360Specs checked | JPG or PNG, up to 150 KBHTML5 ZIP with clickTag, ZIP up to 9,500 KB, backup image |
| AdformSpecs checked | JPG or PNG, up to 150 KBHTML5 ZIP with clickTag, up to 300 KB unpacked, backup image |
| XandrSpecs checked | JPG or PNG, up to 150 KBHTML5 ZIP with clickTag, backup image |
| IAB HTML5Specs checked | JPG or PNG, up to 150 KBHTML5 ZIP with clickTag, ZIP up to 150 KB, backup image |
File size
| Still image | Up to 150 KB |
|---|---|
| HTML5 package | 150 KB to 9,500 KB, depending on the package |
| Animated GIF | Up to 150 KB |
- Cut the number of images before their quality: one strong photo weighs less than three.
- Sizewright subsets the fonts to the letters a banner uses and steps image quality down until each package fits its limit.
- In animated GIFs Sizewright merges held frames and keeps the photo still when a limit needs it.
Design rules for 336 × 280
What works
- Stack in a clear order: headline, image or offer, button, logo.
- After the image, the headline is the largest thing in the frame. At 200 to 300 pixels wide that means short, heavy words.
- Keep a margin around everything; a small square fills up quickly.
- Expect the banner beside the content the visitor came for: one message and a clear button, readable in a second.
Common mistakes
- Fitting the whole landing page into the banner.
- A button that reads as decoration instead of something to press.
- Small text over a busy photo.
- Copy that only makes sense once the landing page is open.
Made in this size
Velo Atelier, Full Bleed · See the whole set
Questions about the 336 × 280
Where is the 336 × 280 used?
A slightly larger Medium Rectangle for the same places on desktop, where the column is wide enough. The extra room goes to the headline; design it together with the 300 × 250 and let both carry the same message.
What size is a Large Rectangle banner?
A Large Rectangle is 336 × 280 pixels, an aspect ratio of 6:5. Sizewright composes it at exactly that size and also exports a version at twice the size for sharp screens on websites and in emails.
How large can a 336 × 280 file be?
It depends on where it runs. Google Ads · HTML5 (JPG or PNG, up to 150 KB; HTML5 ZIP with clickTag, ZIP up to 600 KB), Google Ads · images (JPG or PNG, up to 150 KB; Animated GIF, up to 150 KB), Campaign Manager 360 · DV360 (JPG or PNG, up to 150 KB; HTML5 ZIP with clickTag, ZIP up to 9,500 KB, backup image), Adform (JPG or PNG, up to 150 KB; HTML5 ZIP with clickTag, up to 300 KB unpacked, backup image), Xandr (JPG or PNG, up to 150 KB; HTML5 ZIP with clickTag, backup image), IAB HTML5 (JPG or PNG, up to 150 KB; HTML5 ZIP with clickTag, ZIP up to 150 KB, backup image).
Can a 336 × 280 banner be animated?
Yes. Sizewright animates it as HTML5 with a clickTag and as an animated GIF, kept to 15 seconds so it passes the stricter limits, and a still image always comes with it.
How do I design for the 336 × 280?
Close to square, from 4:5 to 5:4. The most flexible shape: copy and image can stack or sit side by side. Stack in a clear order: headline, image or offer, button, logo. After the image, the headline is the largest thing in the frame. At 200 to 300 pixels wide that means short, heavy words. Keep a margin around everything; a small square fills up quickly. Expect the banner beside the content the visitor came for: one message and a clear button, readable in a second.
Create a 336 × 280 set from your brand
Paste your website address. Sizewright reads your brand and composes this size with every other format of the campaign.