Best Aspect Ratio for AI Comics: Webtoon, Manga, and Video
A practical guide to choosing between 1:1, 9:16, and 16:9 for your AI comic project depending on your publishing format and platform.
Why it matters
Aspect ratio is not just a technical setting. It shapes how much of a scene fits in one frame, how characters are positioned, and how comfortable it feels to read on your target platform.
9:16 — The webtoon and mobile format
9:16 is a tall vertical format, the same shape as a phone screen held upright. It is the native format for webtoon platforms (LINE Webtoon, Tapas, Lezhin), TikTok video covers, and Instagram Stories or Reels.
For comic use, 9:16 works well for character-focused scenes where you want a full head-to-body shot without cropping. Action scenes with vertical movement — jumping, falling, a character standing tall — feel natural in this format. Crowd scenes or wide establishing shots can feel cramped.
Works well for
Character portraits, webtoon scroll reading, mobile-first publishing, short video covers
Less ideal for
Wide panoramas, multi-character group shots, desktop reading, YouTube thumbnails
1:1 — The square format
1:1 is a square, and it is the most versatile format for AI comics. It works well for traditional manga pages, Instagram posts, and any context where you are unsure about the final display environment. Because it is neither tall nor wide, it handles both character shots and scene compositions without extreme bias in either direction.
Most print-ready comic book formats approximate a near-square or slightly tall rectangle. If you plan to collect pages into a PDF or printed book, 1:1 images are easy to arrange on a standard page without much cropping or whitespace.
Works well for
Manga pages, Instagram grid, PDF collections, general-purpose publishing, unsure use case
Less ideal for
Full-screen webtoon reading, YouTube video backgrounds, ultra-wide cinematic scenes
16:9 — The video and presentation format
16:9 is a wide landscape format, matching the shape of a laptop screen, TV, or YouTube video frame. It is the right choice when your comic images are destined for video production: faceless YouTube videos, educational presentations, lecture slides, or widescreen digital reading apps.
For comics, 16:9 works best for establishing shots, battle scenes, and panoramic environments. It gives you room to show a character and a background together without crowding. Dialogue-heavy scenes with two characters facing each other also work well in this format.
Works well for
YouTube video frames, presentations, widescreen scenes, establishing shots, faceless video production
Less ideal for
Mobile-first reading, portrait character close-ups, webtoon platforms, Instagram posts
What to do when you need multiple formats
If you need to publish the same comic on multiple platforms — for example, a webtoon site and a YouTube channel — the cleanest approach is to generate two separate project runs with different aspect ratios. The same story text produces images shaped for each platform.
This doubles the credit cost, but gives you platform-native images rather than cropped or letterboxed versions. For a first experiment, start with 1:1 and crop to 9:16 or 16:9 after downloading. You lose some of the composition, but it is a low-cost way to test your content before committing to a full second run.
Summary: which format to pick
9:16
Webtoon, mobile, short video, TikTok covers, Reels
1:1
Manga pages, Instagram, PDF books, unsure use case
16:9
YouTube videos, presentations, widescreen reading, faceless content
Final thought
When in doubt, start with 1:1. It is the easiest format to work with across multiple contexts, and you can always crop for a specific platform later. The most important thing is to pick one ratio per project and keep it consistent so all your pages feel like they belong together.
Start creating