2025.12.18
Yahoo! JAPAN Ads
Display Ads (Auction)
Completed
Updates
December 18, 2025: This release has completed.
December 10, 2025: Updated comments on display rules for reach metrics and the added changes to the download file.
October 15, 2025: We announced this information.
December 10, 2025: Updated comments on display rules for reach metrics and the added changes to the download file.
October 15, 2025: We announced this information.
Product
Yahoo! JAPAN Ads Display Ads (Auction)
Tool
- Campaign Management Tool
- Campaign Editor
Date
December 17, 2025
Summary
We support changes to placement list create and edit views.
Change display rules for reach metrics
We have changed the display rules for reach metrics (impressions, users) in the list of placement URLs that appears when selecting “Select URL/ad place name you searched” in the placement list create and edit view.
Before: Reach per device (PC, smartphone, tablet)
After: Total reach across all devices
This change has been made in consideration of changes in circumstances since the feature was first released.
[Comments (updated on December 10, 2025)]
The total reach across all devices is calculated using a more accurate aggregation method than the previous device-specific approach. As a result, the values may be lower than those before the change.
[Comments (updated on December 10, 2025)]
The total reach across all devices is calculated using a more accurate aggregation method than the previous device-specific approach. As a result, the values may be lower than those before the change.
Add character codes for download files (updated on December 10, 2025)
You will be able to choose either “UTF-8” or “UTF-16” as the character encoding when downloading placement URLs in CSV format.
[Views]
[Views]
- ”Add URL” column of create and edit placement list view.
- The URL set screen displayed from the “i” icon in the placement list.
Impact on Yahoo! JAPAN Ads Display Ads API
Versions affected
v18
Services
PlacementUrlIdeaService
Change
Values will now be available in the following fields of the response when retrieving placement URL candidates.
- Preceding are only available in v18. Learn more details in “Yahoo! JAPAN Ads Display Ads API v18 Release Note..”
- The values of the preceding fields will be available after the launch date (December 17, 2025).
- The following fields will also continue to be available, but is scheduled to will be removed on April 1, 2026. Use the preceding new field after the launch date.
- desktopReaches: reach per PC
- desktopAdRequests: ad requests per PC
- smartPhoneReaches: reach per smartphone
- smartPhoneAdRequests: ad requests per smartphone
- tabletReaches: reach per tablet
- tabletAdRequests: ad requests per tablet
- Related Tag：
- #Yahoo! JAPAN Ads