What are LINE Ads?
LINE Ads is an advertising service provided by LINE Corporation. With over 80 million users in Japan, it serves as a highly effective ad delivery method for businesses. This service operates with the goal of building a bridge between companies and users.
LINE Ads come in a variety of formats, allowing companies to select an appropriate type tailored to their ad strategy. A major feature is that it allows 1-on-1 communication. Through this approach, it is expected that the advertising effectiveness will dramatically increase. Furthermore, in addition to regular ad delivery, target advertising is also available. By delivering ads to specific user segments based on attributes such as age, gender, region, and interests/preferences, you can increase your conversion rate.
Moreover, its post-delivery analysis features are extensive, allowing companies to accurately measure metrics like click rates and conversion rates. This enables a clear grasp of advertising results and real-time strategic reviews, leading to efficient ad operations.
LINE Ads demonstrate particularly high effectiveness in the Japanese market and are widely utilized as a powerful tool for businesses to deepen their relationships with their users.
Merits of LINE Ads

What are the characteristics and merits of LINE Ads? LINE Ads have many unique benefits. Here, we explain five representative merits.
1-to-1 Marketing
LINE is an interactive ONE TO ONE SNS that allows you to contact each individual user. Specifically, it features users that are active on a daily basis, and fundamentally, has a lot of "live" users. Thus, companies can build trust through direct communication with their users.
Since real-time exchanges are possible, companies can respond quickly to customer needs and feedback, realizing more personalized service provision. This leads to improved customer satisfaction and the acquisition of repeat customers.
High Targeting Precision
With LINE Ads, it is possible to narrow down your target based on detailed attributes such as age, gender, region, and interests. In particular, the ONE TO ONE ad delivery format further heightens this effectiveness. It is no exaggeration to say that almost all Japanese people are registered on LINE, and among them, many users utilize it actively.
By targeting such user bases, characteristics uniquely show heightened conversion rates. The ability to converse in real time allows quickly grasping user reactions to deploy effective ad strategies, which represents a large appeal.
High Conversion Rates
The biggest appeal of LINE Ads lies in their high conversion rates. One of the contributing factors is the ability to deliver ads ONE TO ONE. By configuring detailed settings like age, gender, region, and interests, companies can pinpoint target groups effectively to deliver their ads.
Moreover, the fact that users utilize LINE daily additionally helps improve conversion rates. Since many users use LINE frequently, the opportunities for ads to be displayed increase. Because the platform mainly consists of active users rather than dormant registrations, reactions to advertisements are generally favorable. Through this, LINE Ads leverage effective targeting and high usage frequencies to realize higher conversion rates.
Easy Measurement Capabilities
One major merit of LINE Ads is the ability to perform detailed measurements after delivery. Since you can track click rates and conversion rates in real time, you can quickly grasp reactions after an ad is published. For example, when conducting a campaign, you can evaluate which ads are effective using the data continuously obtained in real time.
Furthermore, by delivering multiple ads to distinct targets, you can compare the performance of each ad and discover the most efficient advertising strategy. Since this makes rapid, data-driven decision-making possible, you can implement effective marketing measures.
Types and Characteristics of LINE Ads
In addition to simply targeting audiences, LINE Ads offer multiple different ad types. Additionally, there are stipulations when delivering ads on LINE, so grasp these properly to utilize LINE Ads effectively.

Size Guidelines for Image Ads
When delivering image files on LINE, there are restrictions around formats and capacities. First, regarding capacity, the condition is that images must be a maximum of 1MB. As for file sizes, restrictions differ depending on the advertisements as depicted below.
Rich Message Ads
For rich message ads, the image size is 1,080 x 1,080 pixels, the formats are JPEG and PNG, and the aspect ratio is 1:1.
Timeline Ads
For timeline ads, the image size is 1,200 x 630 pixels, the formats are JPEG and PNG, and the aspect ratio is 1.91:1.
LINE Official Account Banners
For LINE Official Account banner ads, the image size is 1,080 x 1,080 pixels, the formats are JPEG and PNG, and the aspect ratio is 1:1.
Stories Ads
For stories ads, the image size is 1,080 x 1,080 pixels, the formats are JPEG and PNG, and the aspect ratio is 1:1.
For stories ads specifically, the image size is 1,080 x 1,920, the formats are JPEG and PNG, and the aspect ratio is 9:16.
Movie Ad Specifications
LINE also allows delivering video ads. Here are the details explaining video sizes and length restrictions specifically designed for movie ads.
The endorsed video formats constitute MP4 and MOV types. It also supports H.264 codecs alongside AAC. Deliverable file capacities extend up to 1GB. Video playback lengths natively demand 15 seconds. However, only when adopting stories ads, timelines measuring up to 60 seconds are considered acceptable.
Resolution specifications remain designated where baseline resolutions demand 720p (1280 x 720 pixels), while recommended settings ask for 1080p (1920 x 1080 pixels) naturally.
LINE Ad Precautions
Despite boasting impressive conversion rates, utilizing LINE Ads mandates obeying several cautions when executing submissions. Thus, the succeeding section describes necessary alerts prior to broadcasting LINE Ads effectively.

Handling Regulations Surrounding Carousel Ads
Carousel ads imply broadcasting variations involving multiple sliding images natively adjoining video segments. Image sizing involves 1200 x 628 pixels while supported formats are strictly JPEG or PNG. Videos permit upwards of 1GB utilizing MP4 alongside MOV formations explicitly. Aspect ratios maintain 1.91:1 alongside permitting insertions spanning roughly dual frames upward touching ten individual visuals or videos per carousel precisely.
Additionally, each imagery piece integrates customizable headlines (capturing maximum 30 characters) alongside descriptive text (approximating 50 characters) allowing swift context communication plainly. Each panel establishes unique hyperlink transitions seamlessly driving viewership groups toward respective destination pages proficiently. Actively maximizing this utility constructs substantially advanced advertisement broadcasts dynamically.
Creative Covenants Touching LINE Manga Ads
Within LINE exist possibilities releasing manga-adapted commercials directly requiring particularly prominent conceptual impacts predominantly. Cultivating commercials effectively engaging user mentalities securely amplifies click percentages concurrently boosting conversion scales dramatically.
Concerning LINE manga ads, recommended imagery sizes reach 640 x 960 pixels alongside 1200 x 1800 pixels consecutively. Appropriate formations remain confined within JPEG alongside PNG extensions correspondingly.
A critical point warrants realizing that exhibiting violence, explicit sexual traits, discriminatory behaviors represents profound violations completely. Satisfying these limitations enables realizing securely engaging transmission runs definitively.
Restricting Text Boundaries
Strict character ceilings govern textual promotions respectively. Specifically, titles oblige conforming beneath 30 letters alongside descriptions resting beneath 50 characters tightly. Defending these constraints translates toward dispensing short nonetheless striking notifications properly.
Also, promotional substances deviating away towards violating LINE advertising directives inherently manifesting violently, explicitly, or showcasing discriminational traits face guaranteed rejections fundamentally. Internalising these parameters alongside subsequent strict adherence proves essentially vital inherently. Crafting competent promotions insists exploring inventive methodologies providing alluring articles amidst restricted margins inherently.
How to Post LINE Ads and Terms of Service
Publishing LINE Ads requires initially registering a LINE Official Account. Afterward, access is gained through a dedicated tool called the LINE Ad Manager. This process unlocks capabilities to broadcast LINE Ads effectively. The proper methods alongside essential precautions related to posting LINE Ads will be thoroughly outlined subsequently.

Installment Rules Touching Clicking Keys And Links
Mounting buttons next to transitional links inherently diverges structurally referencing variations segregating image ads, video ads sequentially spanning carousel ads actively. Following determinations over preferred commercial designs necessarily involves specifying targeted URLs anticipating user clicks actively respectively.
Following closely involves determining specific switches next to context letters explicitly. Essentialities reside maintaining phrasing compactly ensuring viewerships perceive obligatory actions instantaneously. Particularly advocating pro-active behavioral cues remains strongly encouraged purposefully. Concerning buttons natively, selecting elements distinctly matched toward subsequent transitional destinations persists demanded actively.
Since LINE internally organizes advisable button sizing paradigms accurately naturally, following those specific indicators while selecting physical bounds seems wisest conceptually. Regarding color mappings naturally proposing evaluating overall graphical equilibrations actively choosing harmonious shades predominantly. Executing appropriately elevates visibility scales generating expected viewership attractions dynamically. Setting these frameworks properly consistently bolsters intrinsic advertisement performances fundamentally.
Limitations Enacting Against File Formats alongside Capacities
Early segments depicted rudimentary data summarizing filesizing against formation paradigms corresponding LINE Ads, whereas practically preparing deployment demands revisiting these markers closely genuinely. Releasing ad broadcasts underscores checking capacities involving uploaded media resolving resolution metrics primarily prominently fundamentally.
Constructing visual commercials natively restricts ceiling capacities hovering around max 1MB specifically. Therefore graphics allocated within submissions obligate maintaining intrinsic qualities securely inside established parameters essentially natively. Tolerable file constructs uniquely isolate JPEG beside PNG extensions solely insisting prepared frameworks respect designated setups cautiously inevitably.
Comparatively natively, video commercials enable broader limits maximizing capacities nearing 1GB completely. Similarly restricting against assigned movie constructions indicates relying atop either MP4 and MOV alternatively. Additional directives indicate recommended visual sequences running roughly 15 crossing up to 30 seconds continually. Inventing methods effectively transferring ideas comfortably within said temporal confines remains heavily requested natively inherently.
Furthermore native resolution bounds behave critically. Providing viewers premium audiovisual components mandates certifying bottom bounds exceeding 1280 x 720 pixel measures confidently. Observing these mandates definitively allows maximizing native output capacities completely. Summarily realizing subsequent requirements confirming optimal entries effectively bridges success ultimately profoundly.
Restrictions Managing Animation Commercials
Proceeding towards showcasing ideal measurements alongside sequencing durations next to loop specifications distinctly addressing animated features predominantly mimicking GIF formats natively inevitably.
Animating features lean heavily upon employing GIF extensions. This schema portrays moving mediums proficiently specifically optimizing visually immersive influences particularly fitting commercial broadcasts functionally. Animated advertisements respect tight limitations capping maximally toward 1MB purely. These constrained sizes inherently guard viewership conveniences actively maintaining rapid visual loading tempos essentially avoiding heavily loaded articles degrading streaming velocities consequently dictating cautious monitoring inherently.
Transmitting animated commercials thoroughly demands observing alongside following native LINE advertising policies faithfully. Deploying matters contesting foundational principles yields inherent rejections signifying anticipating thorough fundamental knowledge becomes necessary essentially natively. Considering animated attributes bestow immense impacts toward viewer mindsets dictates treating design conceptualization rigorously. Deliberating balancing arrays spanning colors natively against motion vectors considering global composition ensures presenting alluring naturally decipherable formats acting securely as ultimate triumph keys naturally.
Formulating formidable animated promotions mandates accommodating visual ingredients equally alongside conceptual deliveries advocating respective patron calls structurally natively. Persuing creative pathways echoing actively within designated target pools anticipates generating significantly uplifted response frequencies definitively.
LINE Ad Screening Points

Screening criteria applied across prospective commercial broadcasts operates under extreme rigidity strictly natively. Representing rudimentary taboos includes substances portraying violence, explicit sexual connotations alongside disparaging manifestations fundamentally natively. Moreover violating copyright legislations remains absolute minimum expectations natively. This designates automatic expulsions plainly. Mandating destination domains remain devoid of malware characteristics alongside avoiding phishing behaviors remains strictly compulsory natively.
Subsequent clearing aforementioned examinations expects ascertaining authentic representations refraining employing exaggerated narratives matching realistically against corresponding properties actively correctly. Implementing premium qualities matching imagery beside videography encouraging spontaneous user engagements invariably bumps concurrent click scales alongside conversion outputs consistently properly.
Tomira LINE Ad Operation & Consulting

Tomira's service features professionals well-versed in the characteristics of LINE Ads, implementing ad management in the most suitable form for our clients. Therefore, ad management reflecting the latest trends is possible, and significant growth in results can be expected.
In addition, because we have established Tomira's unique operational logic based on insights to date, stable long-term customer attraction is possible. By rotating the PDCA cycle quickly, higher cost-effectiveness can be expected.
Furthermore, we can handle a wide range of requests, from consulting for accounts managed in-house to integrated plans where we handle production, operation, and analysis together. This allow us to identify improvement points from daily operations, reflect them quickly, and support result enhancement.
| Item | Content |
|---|---|
Service Name | Tomira LINE Ad Operation & Consulting |
Company Name | Tomira Inc. |
Address | BIZ SMART 235, 2-12-8 Kita-Aoyama, Minato-ku, Tokyo |
Business Content | ・Web/Digital Marketing Support |
Official Site | https://tomira.co.jp/marketing/ads/ads_line/ |
Summary

In this article, we thoroughly explained the various formats of LINE Ads and their merits. As an SNS ad that achieves ONE TO ONE communication, LINE Ads boast high targeting accuracy and high conversion rates. In particular, LINE, which has a large number of active users in Japan, enables businesses to deliver ads efficiently. We also discussed the characteristics and specifications of each ad format, such as image and video guidelines, carousel ads, and rich message ads. By following these rules and using suitable creatives, you can maximize the effectiveness of LINE Ads. Additionally, since click rates and conversion rates can be tracked in real-time when running LINE Ads, it is easy to optimize your advertising strategy based on data.

