Yahoo! JAPAN Ads API | Developer Center
日本語2026/02/12
Display Ads: Increase minimum pixel sizes and stop adding images
Updates
February 12, 2026: We have updated the schedule.
January 19, 2026: The schedule was postponed.
December 9, 2025: We announced this information.
Product
Yahoo! JAPAN Ads Display Ads
Schedule
We have determined the schedule as follows.
- May 25, 2026
Stop adding images that do not meet the new minimum pixel sizes. - July 22, 2026
Stop delivering ads that use images that do not meet the new minimum pixel sizes.
*This date is subject to change.
Summary
We will increase the minimum and recommended pixel sizes for some images that will be available for Display Ads. This change enhances the ad image quality as devices such as smartphones increase in resolution.
The following images are subject to change. Pixel sizes represent width x height.
| Aspect ratio | Recommended pixel size | Minimum pixel size | ||
|---|---|---|---|---|
| Before | After | Before | After | |
| 6:5 | 600×500 | 1200×1000 | 300×250 | 600×500 |
| 16:5 | 640×200 | 1280×400 | 320×100 | 640×200 |
| 32:5 | 640×100 | 1280×200 | 320×50 | 640×100 |
| 1:1 | 1200×1200 (no change) | 300×300 | 600×600 | |
| 600×600 | ||||
| 39:5 | 936×120 (no change) | 468×60 | 936×120 | |
| 728:90 | 1456×180 (no change) | 728×90 | 1456×180 | |
| 4:15 | 320×1200 (no change) | 160×600 | 320×1200 | |
| 1:2 | 600×1200 (no change) | 300×600 | 600×1200 | |
Actions after the size changes
We will take the following actions for images that do not meet the new minimum pixel size.
If an ad currently uses these images, consider replacing them with images that meet the recommended pixel sizes.
*The following schedules have been postponed. For details, see "Schedule" at the top of this page.
- May 25, 2026
We will stop the following actions for images that do not meet the new minimum pixel size.
- Adding new images
- Creating new ads using the affected images
- Specifying the affected images in existing ads (image replacement)
After the scheduled date, these images will not be available for creating or modifying ads.
- July 22, 2026
We will stop delivering ads that use images not meeting the new minimum pixel size.
Comments
- The following images are not subject to the increase in minimum and recommended pixel sizes.
- Dynamic Ads for Display
- Product images (specified in the product feed), logo images, and campaign banners
- Download the following document for details. (Available in Japanese)
Download