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The ink thread

Create your manga and comics with a real drawing engine, not a web toy.

CybManga is a desktop comic studio: offline and pro-grade. Where web tools just handle bubbles and panels, it ships a native-class drawing engine: stabilizer, pressure sensitivity, real-time Bézier smoothing.

View the code on GitHub Explore the features
6 pro formats
A4, US Comic, B5, Tankōbon, Webtoon, Square
PSD export
with layers, PSD import too
100% offline
your data stays local
The core

The drawing engine

It's the backbone of CybManga, and what sets it apart: a real drawing engine inside a web-tech app, not a throwaway toy canvas.

  • Brush, pencil, marker, eraser, eyedropper, fill bucket.
  • LazyBrush stabilizer for clean strokes, even freehand.
  • Pressure sensitivity (size AND opacity), real-time quadratic Bézier smoothing.
  • Coalesced event capture for minimal latency, smooth multi-canvas rendering.
  • Customizable brushes (shape + texture), import/export, pro presets (G-Pen, Maru, calligraphy, airbrush, charcoal).
Features

Everything you need to make a comic page, from sketch to export

  • Pro manga tools

    Adjustable screentone, speed and focus lines generated on the fly, symmetry, shape correction (auto circle/line/rectangle), linear/radial gradients.

  • Pages & layout

    6 pro formats (A4, US Comic, B5, Tankōbon, Webtoon, Square), single / double / all-pages view on an infinite canvas, margins, bleed, grid and snapping.

  • Panels & bubbles

    14 panel shapes (rectangle, circle, diagonals, torn, burst), 8 bubble types with a tail you can reposition a full 360°, images clipped to the panel shape.

  • Layers & colors

    Full layers (visibility, locking, opacity), 10 blend modes that survive PSD export, clipping mask, manga / screentone / skin / nature palettes.

  • Persistence & export

    Auto-save, PNG and Adobe PSD export (with layers), PSD import (Adobe/Fresco), .manga projects, per-action undo/redo and customizable shortcuts.

  • Dual visual identity

    A dark neon cyberpunk theme (cyan, magenta, halos) and a light industrial chrome theme, driven by a single source of tokens. Custom brush cursor that stays visible on any background.

What makes it different

Not just another web toy

  • A pro engine in web-tech

    Stabilizer, pressure, Bézier: native-software grade, not a plain canvas.

  • 100% manga-focused

    Screentone, speed/focus lines, 360° bubble tails, B5/Tankōbon/Webtoon formats: native, not plugins.

  • Honest PSD interoperability

    Import and export with layers, and only the blend modes that are actually supported. No false promises.

  • Offline desktop, local data

    Electron + Spring Boot + H2: it works without internet, nothing goes to the cloud.

  • Document-store persistence

    The frontend is the source of truth, no rigid schema. Flexible and fast, Figma/Excalidraw style.

Under the hood

The tech stack

01 Frontend

  • React 18
  • Vite 5
  • Tailwind 3
  • Electron 40
  • Canvas multi-couches

02 Backend

  • Spring Boot 3.2
  • Java 21
  • H2 (fichier local)
  • JPA
  • springdoc / Swagger

03 Architecture

  • Offline-first
  • Empaquetage jpackage
  • electron-builder
  • Reducer pur par domaine

Curious to see the code?

CybManga is a personal project, designed and built end to end. The repo is public: take a look, or drop me a line if the project interests you.

View on GitHub

Desktop application (Windows). Downloadable build coming soon.