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LY Ads Deep Dive: Ad Formats, Targeting & Setup for European Brands (2026)
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On 1 April 2026, LY Corporation completed the integration of LINE Ads and Yahoo! JAPAN Ads into a single unified platform: LY Ads. For foreign brands, this is the most significant development in Japan paid media in years – and one that requires fresh understanding from the ground up.
This article is purely a technical guide. It does not cover Japan’s market context or entry strategy – those are covered in our Japan digital ecosystem guide and our 12-month Japan marketing playbook.
What this article covers is the complete detail of LY Ads: every product, every format, every targeting parameter, and the exact steps UK and European advertisers need to follow to get live.
Table of Contents
LY Ads is a family of three distinct advertising systems, each serving a different role in a Japanese media plan.
LY Search Ads are text-based ads that appear on Yahoo! JAPAN’s search results pages when users search for keywords relevant to your business.
💡 How it works
You bid on Japanese-language keywords. When a user in Japan searches for those terms on Yahoo! JAPAN, your ad appears in the sponsored positions. The auction mechanism is similar to Google Ads: you set a maximum bid, the system balances bid against quality score, and you pay per click.
🌍 Why it matters for foreign brands
Japan is one of the very few markets where Google does not have an unchallenged monopoly. Yahoo! JAPAN holds meaningful search share, particularly among users over 35. Ignoring Yahoo! JAPAN Search means missing a significant high-intent audience that most European competitors are not reaching.
❗️Key requirement
All keyword research and ad copy must be in Japanese. Translated keywords from your European campaigns will not reflect how Japanese consumers actually search. Native-language keyword research is non-negotiable.
📊 Best campaign uses
Product launches, service queries, brand defence, competitor conquesting, and any category with strong intent-based demand (travel, finance, beauty, electronics).
LY Display Ads are programmatic banner and video ads delivered across LINE and Yahoo! JAPAN properties, bought through a real-time auction.
⭐️Placements covered:
Ad formats supported
| Format | Specifications | Best Used For |
| Static image banner | 320×50, 320×70, 320×100, 320×250, 320×320 (px) | Brand awareness, retargeting |
| In-feed video | 16:9, 1:1, 4:5 aspect ratios; up to 60 seconds | Storytelling, product demonstration |
| Carousel | 2–10 cards, each with image + headline + URL | Product catalogues, multiple offers |
| Collection | Hero image + product grid below | E-commerce, seasonal campaigns |
⭐️Campaign objectives available:
Performance benchmarks (e-commerce): Data from 180+ LINE Ads accounts across Japan shows an average CTR of 2.5%, average ROAS of 5.5x, and a conversion rate of approximately 3.0% for e-commerce campaigns — strong by any international comparison.
LY Display Ads (Guaranteed) are fixed-placement advertising in the highest-visibility positions on LINE and Yahoo! JAPAN, guaranteed regardless of auction competition.
⭐️Why this is different from auction ads:
Auction ads optimise for efficiency. Reservation ads are for reach and impact — your creative is guaranteed to appear in specific premium positions on specific dates. This is the Japan equivalent of a prime-time TV spot or a front-page newspaper takeover.
Key formats:
⭐️Talk Head View (LINE)
Talk Head View is the flagship premium format on LINE. It is a full-screen video or static creative that appears at the very top of the LINE chat list — the first thing every user sees when they open the app. Given that 79% of Japanese consumers use LINE daily, a Talk Head View campaign can reach the majority of Japan’s adult population within a single delivery day.
⭐️Yahoo! JAPAN Home Page
Premium placements on the Yahoo! JAPAN portal homepage — one of the most trafficked pages in Japan. These positions carry significant brand authority and are visible to Yahoo! JAPAN’s 54 million monthly logged-in users.
LY Ads targeting draws on the combined first-party data of LINE and Yahoo! JAPAN — one of the richest data ecosystems in Japan.
LY Corporation categorises users based on content consumption, app usage, browsing behaviour, and purchasing patterns. Available interest categories include:
⭐️ Custom Audiences: upload hashed CRM data (emails / phone numbers). It’s best used for re-engaging existing Japan customers.
⭐️ Lookalike Audiences: algorithm models users similar to your customer list. It is best used for acquisition at scale.
⭐️ Remarketing: re-engage website visitors or ad clickers. It’s best used for cart abandonment and re-engagement.
⭐️ LINE OA Friends: target users already following your LINE Official Account. It’s best used for reaching a high-intent, warm audience.
A LINE Official Account is the prerequisite for most LY Ads campaign types, especially Friend Acquisition campaigns.
Important for EU-based businesses: LINE Official Account standard self-serve plans are not currently available to businesses registered in EU countries. The recommended route is to work with an official overseas partner — such as Digital Marketing for Asia — who can facilitate account setup and management on your behalf. UK-registered businesses can proceed through the standard registration path.
The Business Manager is the master account that connects your LINE Official Account with your advertising account. From April 2026, creating a Business Manager and linking it to a LINE Official Account is a required step for new advertising accounts registered in Japan.
Your ad account is where campaigns, ad groups, creatives, and billing are managed. Note: when your registered address at account creation is outside Japan, connecting to a Business Manager and LINE Official Account is optional — not mandatory. This is the specific route available to UK and European advertisers applying independently.
Install the LY Ads conversion tag (similar to the Meta Pixel or Google Tag) on your Japanese website. Set up the specific conversion events that match your campaign objectives: page views, add-to-cart, purchase, lead form submission.
Before spending any budget, build your foundation audiences:
In the LY Ads Campaign Management Tool:
LY Ads campaign management benefits significantly from native Japan market expertise, particularly for creative localisation, keyword research, and seasonal planning. Digital Marketing for Asia is the official overseas representative for LY Corporation advertising products, and offers free campaign setup support and ongoing management for UK and European brands. Contact us to get started →
LY Ads works most powerfully as an acquisition engine feeding a LINE Official Account CRM strategy.
⭐️Top of Funnel → LY Ads Display (Performance or Reservation)
Build brand awareness among new Japanese audiences. Drive LINE Official Account friend additions.
⭐️Middle of Funnel → LINE Official Account Broadcasts
Send targeted content, seasonal offers, and exclusive promotions to opted-in followers. Segment by interest or purchase behaviour.
⭐️Bottom of Funnel → LY Ads Remarketing
Re-engage high-intent website visitors and cart abandoners with conversion-optimised ad formats.
⭐️Loyalty → LINE Official Account (ongoing)
Post-purchase communication, loyalty rewards, reorder reminders. Japanese consumers who follow a brand on LINE have significantly higher repeat purchase rates than one-time website buyers.
We are official media reps for LINE and Yahoo! JAPAN platforms. This means that we are able to provide our clients with comprehensive support services completely free of charge.
⭐️ A dedicated specialist provides strategic guidance and operational support, free of charge.
⭐️ Comprehensive support from account creation to set up and activation.
⭐️ No contracts or minimum needed.
⭐️ The latest information such as market trends and industry insights to help your planning.
