Petalica Paint - AI Sketch Colorization Tool
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Petalica Paint Brief Overview
Petalica Paint (previously known as PaintsChainer) is an AI-assisted tool designed to automatically colorize black-and-white line art. The core idea is simple: you upload a sketch or line drawing, and the system generates a colored version in seconds. It’s especially useful for artists who want fast base colors, quick concept variations, or a starting point before doing detailed manual rendering.
Beyond “one-click coloring,” Petalica Paint also supports light user control. You can guide the AI by adding rough color hints (simple strokes that suggest what color a region should become). It also includes a “sketch simplification” function intended to clean up messy or rough lines before colorization, which can help produce more consistent results.
Important availability note: the Petalica Paint web service was officially discontinued on July 31, 2025 (4:00 PM JST), meaning the standalone service is no longer accessible today.
How to Use
- Prepare a clear black-and-white line drawing (clean lines generally produce better results).
- Upload the artwork (when the service is available) or access the AI coloring feature through supported integrations such as pixiv Sketch.
- Choose a colorization style (the tool provides multiple preset “looks”).
- Review the auto-colored output.
- If the result isn’t what you want, add quick color hints (simple strokes) to tell the AI what colors to use in key areas.
- Update/refresh the preview to see the new colorized version.
- If your original sketch is rough, switch to the sketch/line simplification mode, pick a simplification style, and refine the lines before colorizing again.
- Once satisfied, apply the result to your canvas/workflow and export your image.
Key Features and Functions
- Automatic colorization on upload for fast results.
- Three colorization styles (Tanpopo, Satsuki, Canna) to change the overall look of the output.
- Color hints (guided coloring) so users can influence regions like hair, skin, clothing, and backgrounds.
- Auto-refresh / update behavior to quickly preview changes after adding hints.
- Sketch simplification (line refinement) with dedicated simplification styles (Panda, Shirokuma).
- pixiv Sketch integration, enabling AI coloring inside a drawing/social platform workflow.
- Commercial use permitted under the tool’s terms, as long as the user agrees to and follows the published policies.
Petalica Paint Pricing
Petalica Paint was offered as a free-to-use AI coloring service (no standard paid tiers were publicly advertised for typical users). The related automatic-coloring feature released through pixiv Sketch was also listed as free.
Because the standalone Petalica Paint service ended on July 31, 2025, there is no current pricing or subscription plan to purchase today—availability depends on whether any integration, successor product, or re-release exists outside the discontinued service.
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