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NOIRADIX Studio

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NOIRADIX Studio — A free, open-source browser pixel art and sprite animation studio with structured PIX2 projects and Unity 2D export.

About NOIRADIX Studio

# NOIRADIX Studio

NOIRADIX Studio is a free, open-source pixel art editor and sprite animation suite for pixel artists, indie game developers, and technical artists. It runs in a modern web browser, requires no account, and can also be downloaded and run locally.

## Create and edit pixel art

Draw directly on a precision pixel canvas with tools for painting, erasing, lines, shapes, fills, color picking, and selection. Organize artwork with layers, groups, and regions; manage palettes; use symmetry tools; and inspect pixel coordinates with rulers. The standalone PixelArt editor also provides a flexible canvas for creating and refining individual pieces of artwork.

## Build and preview sprite animations

Organize artwork into sprite sheets and animation frames, then preview clips in real time. NOIRADIX supports 4-direction, 8-direction, Platformer 2D, and custom animation workflows. The four-direction workflow shown in the demo is one example of the supported animation options.

## Work with structured PIX2 projects

Projects can be saved in .pix2, a human-readable, machine-readable text format for representing pixel artwork, sprite sheets, structural layers, palettes, and animation data. PIX2 makes project content easier to inspect, edit, compare, and version with Git than an opaque binary-only workflow.

PIX2 can also be used with an external AI coding assistant. Copy a project prompt, ask an assistant to create or modify PIX2 source, then bring the resulting text back into NOIRADIX Studio to inspect and edit it. NOIRADIX does not generate artwork by itself; the AI assistant is a separate tool.

## Import and export

Import raster sprite sheets and animation metadata, then inspect and organize the resulting frames in the editor. Export artwork as PNG sprite sheets or individual frames, and export TexturePacker-compatible JSON for use in other game-development workflows.

The Unity 2D package includes a sprite atlas, metadata, and Pix2UnityImporter.cs. The importer slices the sprites and creates native Unity .anim AnimationClip assets. Animator Controller setup is done in Unity; the export package does not generate an Animator Controller asset.

## Run locally and work offline

NOIRADIX Studio is a client-side browser application. Download or clone the source repository and launch it locally with the included Windows, Linux, or macOS launcher. Once the files are available on the device, the editing workflow does not require an account or a server-side project service.

## Project details

- Free to use; no paid plans or subscriptions.

- Open source under the Apache License 2.0.

- Official website: https://noiradix.me/

- Source code: https://github.com/dotlinux26/noiradix-studio

- Demo video: https://www.youtube.com/watch?v=XikhVI0APQg

Who it is for
Pixel artists, indie game developers, and technical artists creating 2D sprites, sprite sheets, and directional animations.
Problem it solves
Creating game sprites often means drawing frames in one tool, organizing animation data in another, then preparing and slicing assets manually for a game engine. Raster-only workflows can also make precise edits, reuse, and version review difficult.
The solution
NOIRADIX brings pixel drawing, sprite-sheet organization, layers, groups, regions, palettes, symmetry tools, and animation previews into one browser-based workflow. Projects use PIX2, a readable structured format that can be edited directly or used with an external AI coding assistant. Users can import sprite sheets and metadata, then export atlases and Unity-ready sprite and animation assets.
What makes it unique
NOIRADIX pairs a visual pixel-art editor with human-readable, versionable sprite data. Artists can draw and refine on the canvas while developers can inspect, edit, and reuse project structure. Its Unity importer creates sprite assets and native .anim clips; Animator Controller setup remains in Unity.

Features

  • Pixel Art Editor

    Draw and refine sprites with pixel tools, symmetry, palettes, and a precision canvas.

  • Layers and Regions

    Organize artwork with editable layers, groups, and regions.

  • Animation Previews

    Preview 4-direction, 8-direction, Platformer 2D, and custom animation clips.

  • PIX2 Language Projects

    Edit readable, structured sprite data directly or use it with an external AI coding assistant.

  • Import and Slice

    Import raster sprite sheets and animation metadata into editable projects.

  • Unity 2D Export

    Export an atlas, metadata, and an importer that creates sprites and native .anim clips in Unity.

Details

Platforms
  • Web
  • Windows
  • macOS
  • Linux
  • Self-hosted
Pricing
  • Free
  • Open source
Built for

Pixel artists, indie game developers, and technical artists creating 2D sprites, sprite sheets, and directional animations.

Building since

2026

Technology

NOIRADIX Studio screenshot showing a cartoon character

1 / 5

Website performance

Recorded mobile lab measurements and finalized weekly standings from IndieTools Speed.

NOIRADIX Studio website speed overview

64
Performance scoreNeeds improvement

In IndieTools' mobile lab test on November 14, 2026, the NOIRADIX Studio website scored 64 out of 100 (needs improvement). Largest Contentful Paint took 17.52 s and Speed Index took 10.39 s, both rated poor.

Measured (UTC)

LCPLargest Contentful Paint
17.52 s
Poor
TBTTotal Blocking Time
5 ms
Good
CLSCumulative Layout Shift
0.000
Good
FCPFirst Contentful Paint
2.12 s
Needs improvement

Not ranked in a finalized week yet.

Stored lab observations from controlled test runs, not real-user Core Web Vitals or a guarantee of search rankings. Weekly standings remain attached to their finalized edition.Method psi-mobile-two-sample-mean-v1, 2 samples per reading. Lab results can vary between runs.

DR4 (primary model)
0

First DR4 reading

DR3
0

First DR3 reading

Model difference0. DR4 matches DR3 for this domain.

Measured · noiradix.me

What do DR4, DR3 and the model difference mean?
DR4:
Ahrefs' newer model. It gives more weight to links from sites with organic search traffic and rates a subdomain on its own links.
DR3:
The previous model, shown in the Ahrefs app until 1 December 2026.
Model difference:
DR4 minus DR3 for the same domain. The models calculate differently, so this is not growth or a drop; the “since” lines compare each model with itself.

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