AI Assistant Feature Update Announcement | Aspect Ratio Adjustment
copainter’s AI Assistant now has a stable aspect ratio feature with more presets, improving composition freedom, accuracy, and reliability for creative workflows.
Latest
Entering the Era of Creating Manga with AI — Double Your Production Speed with copainter!
Using copainter, manga creators can cut production time in half by integrating AI for storyboards, line art, and coloring, boosting speed and efficiency.
[Results Announcement!!] copainter × Shibuya Zensen Manga & Illustration Contest
Thank you for all entries. After careful judging, winners of the copainter × Shibuya Zensen contest were selected and will be contacted individually.
Training Feature Added to the Enterprise Plan! | How to Use copainter’s Training Feature
copainter’s new Training feature (Enterprise only) lets businesses train custom AI models on their characters or styles, ensuring consistent outputs and faster, more efficient illustration production.
Tips for Creating High-Accuracy, Company-Specific AI Models with copainter’s Training Feature
copainter’s new Training feature lets Enterprise users train custom character or style models. High accuracy depends on consistent, high-quality images, sufficient data, and iterative testing with AI Assistant support.
Easily Generate Facial Expression Variations with AI! Streamline Character Design Using copainter’s AI Assistant
Facial expression variations are vital to character design. copainter’s AI Assistant quickly generates consistent expressions, reducing manual work and improving efficiency across games, manga, and webtoons.
Create Character Turnarounds with copainter’s AI Assistant | How to Streamline Character Design
Character turnaround sheets are essential for consistent design. copainter’s AI Assistant generates accurate front/side/back views quickly, improving efficiency for anime, game, and webtoon production.
assets
![[Free Download] Children’s Poses Holding a Pencil — Copainter users can use it for free, including commercial use.](/content/images/size/w720/2026/01/header_pose-collection_kid-holding-a-pencil-1.png)
[Free Download] Children’s Poses Holding a Pencil — Copainter users can use it for free, including commercial use.
A free base pose collection of children holding a pencil.
Free to use for commercial projects, with edits, modifications, and tracing allowed.
![[Free Download] Female Poses Holding a Pen — Copainter users can use it for free, including commercial use.](/content/images/size/w720/2026/01/header_pose-collection_woman-holding-a-pen-1.png)
[Free Download] Female Poses Holding a Pen — Copainter users can use it for free, including commercial use.
A free base pose collection of women holding a pen.
Free to use for commercial projects, with edits, modifications, and tracing allowed.
![[Free Download] Theater Background Illustration (Landscape) — Copainter users can use it for free, including commercial use.](/content/images/size/w720/2026/01/header_background_theater-1.png)
[Free Download] Theater Background Illustration (Landscape) — Copainter users can use it for free, including commercial use.
Free theater background illustration assets.
These 16:9 landscape backgrounds are easy to use for PC-oriented projects. Commercial use and tracing are allowed—perfect for manga, Webtoons, and game backgrounds!
![[Free Download] Flower Field Background Illustration (Landscape) — copainter users can use it for free, including commercial use.](/content/images/size/w720/2026/01/header_background_flower-garden-1.png)
[Free Download] Flower Field Background Illustration (Landscape) — copainter users can use it for free, including commercial use.
Free flower field background illustration assets.
These 16:9 landscape backgrounds are easy to use for PC-oriented projects. Commercial use and tracing are allowed—perfect for manga, Webtoons, and game backgrounds!
![[Free Download] Space Background Illustration (Landscape) — copainter users can use it for free, including commercial use.](/content/images/size/w720/2026/01/header_background_universe-1.png)
[Free Download] Space Background Illustration (Landscape) — copainter users can use it for free, including commercial use.
Free space background illustration assets.
These 16:9 landscape backgrounds are easy to use in PC-oriented projects. Commercial use and tracing are allowed—perfect for manga, Webtoons, and game backgrounds!
![[Free Download] Male Workout Pose Collection — Copainter users can use it for free, including commercial use.](/content/images/size/w720/2026/01/header_pose-collection_muscle-training-1.png)
[Free Download] Male Workout Pose Collection — Copainter users can use it for free, including commercial use.
A free base pose collection of men working out.
Free to use for commercial projects, with edits, modifications, and tracing allowed.
![[Free Download] Female Hugging Pose Collection — Copainter users can use it for free, including commercial use.](/content/images/size/w720/2026/01/header_pose-collection_woman-making-peace-2.png)
[Free Download] Female Hugging Pose Collection — Copainter users can use it for free, including commercial use.
A free base pose collection of women hugging.
Free to use for commercial projects, with edits, modifications, and tracing allowed.
poses
[Free Download] Children’s Poses Holding a Pencil — Copainter users can use it for free, including commercial use.
A free base pose collection of children holding a pencil.
Free to use for commercial projects, with edits, modifications, and tracing allowed.
[Free Download] Female Poses Holding a Pen — Copainter users can use it for free, including commercial use.
A free base pose collection of women holding a pen.
Free to use for commercial projects, with edits, modifications, and tracing allowed.
[Free Download] Male Workout Pose Collection — Copainter users can use it for free, including commercial use.
A free base pose collection of men working out.
Free to use for commercial projects, with edits, modifications, and tracing allowed.
[Free Download] Female Hugging Pose Collection — Copainter users can use it for free, including commercial use.
A free base pose collection of women hugging.
Free to use for commercial projects, with edits, modifications, and tracing allowed.
![[Free Download] Peace-Sign Posing Collection for Women — Copainter users can use it for free, including commercial use.](/content/images/size/w720/2026/01/header_pose-collection_woman-making-peace-1.png)
[Free Download] Peace-Sign Posing Collection for Women — Copainter users can use it for free, including commercial use.
A free base pose collection of women making peace signs.
Free to use for commercial projects, with edits, modifications, and tracing allowed.
![[Free Download] Child in Kimono Pose Pack — Free to Use (Commercial OK) for copainter Users](/content/images/size/w720/2026/01/header_pose-collection_kid-wearing-kimono-1.png)
[Free Download] Child in Kimono Pose Pack — Free to Use (Commercial OK) for copainter Users
A free pose-base pack of children wearing kimono. Free to use with commercial rights, and tracing or edits are allowed.
![[Free] Kimono Male Poses Collection — Free Commercial Use for copainter Users](/content/images/size/w720/2026/01/header_pose-collection_man-wearing-kimono-1.png)
[Free] Kimono Male Poses Collection — Free Commercial Use for copainter Users
We are offering a free pose collection of men in traditional Japanese clothing for copainter users. The poses are suitable for illustration, manga, games, and webtoons, allow tracing and editing, and can be used commercially within copainter.
Tips
With copainter’s AI Assistant, your reference images can be turned directly into pose mannequins.
With copainter’s AI Assistant, reference images can be turned directly into pose mannequins.
This article introduces pose asset examples using copainter, which is safe and approved for commercial use.
A free pose-base pack of women using a laptop. Free to use with commercial rights, and tracing or edits are allowed.
With copainter’s AI Assistant, you can achieve “just a little more zoomed-out” images.
This article introduces outpainting examples using copainter, a safely designed tool approved for commercial use.
With copainter’s AI Assistant, anyone can create manga—easily.
copainter’s AI Assistant makes manga creation easy by turning simple storyboards into finished pages. By preparing basic character references and a base image, creators can quickly produce 4-panel manga and focus on ideas and storytelling rather than heavy drawing work.
Turn Color Illustrations into Line Art in Seconds! Speed Up Your Inking Workflow with Copainter’s AI Assistant
Copainter’s AI Assistant automates converting color roughs into clean line art, saving time and focus. Use AI line art as a base, then refine details and style for faster illustration, manga, and webtoon workflows.
Change the season while keeping the background consistent: streamline background variations with copainter’s AI Assistant.
copainter’s AI Assistant lets creators efficiently generate seasonal background variations while preserving composition and world consistency, reducing production time and costs for manga, anime, games, and Webtoons.
Instant Outfit Changes with the AI Assistant! How to Change a Character’s Clothing in Seconds with copainter
Character costume changes enhance storytelling but are time-consuming to draw manually. copainter’s AI Assistant lets creators quickly change outfits while preserving character pose and background, reducing production time, cost, and revisions for manga, games, and animation.
Change Composition and Angles While Keeping Background Consistency! How to Streamline Manga and Anime Production with copainter’s AI Assistant
copainter’s AI Assistant lets creators quickly change background composition and camera angles while preserving consistency, greatly reducing workload for manga, anime, games, and webtoons.