A high-performance, browser-based painting application built with WebGPU and Rust.

Try it live here!

Impression uses a hybrid architecture: a powerful Rust drawing engine running in WebAssembly handles brush dynamics and pixel rendering, while a TypeScript/WebGPU frontend provides a modern UI and fast layer compositing.

• Pressure-sensitive brush engine with fine-tuned dynamics (size, opacity, flow, hardness, roundness, angle).
• Custom brush tips via Photoshop .abr file import.
• Layer management with support for multiple blending modes, adjustment layers, and non-destructive editing.
• High-performance compositing powered by WebGPU alpha blending.
• Selection tools (marquee, lasso) with advanced boolean operations (add, subtract, intersect).
• Infinite pan and zoom canvas navigation.

Impression features a highly customized Soft Graphite user interface. Designed specifically to look like a premium creative tool rather than standard developer software, it uses warm grays, cream tones, and shadow-based elevation to create a "tactile" and un-distracting environment that focuses attention on your artwork.

The interface works similarly to standard professional image editing software:

• Select tools from the left toolbar.
• You can use standard keyboard shortcuts like B for Brush, I for Eyedropper, Space to Pan, or Alt with Brush to temporarily sample a color.
• Create and manage layers from the right-hand panel.
• Right-click or use the layer panel menu for layer operations (duplicate, merge, mask).
• Your paintings and brush presets are automatically saved locally in your browser so you don't lose any progress.

Want to contribute or learn how Impression works? Please see the documentation for AI coding agents and human developers:

• Interested in submitting patches? Check out CLAUDE.md for engineering practices.
• Deep architectural explanation: docs/architecture.md
• Development environment and build setup: docs/development.md
• Feature implementation details: docs/features.md
• Multiplayer/sync design concepts: docs/multiplayer-design.md