GameMaker Project File (YoYo Games) (.gmk)

ZumiFiles does not currently have a visual parser or converter for proprietary .GMK files, but you can inspect raw file headers, magic bytes, and string offsets locally inside your browser Hex Viewer.

Launch .GMK Hex Inspector in ZumiFiles

What is an .GMK File?

The .gmk (GameMaker Project File (YoYo Games)) file is a specialized container used within Programming languages workflows.

Associated Software & Origin

Created and edited by industry-standard desktop software, digital authoring suites, and specialized operating system tools.

Data Structure & Characteristics

Stored as a structured data stream requiring specialized browser decoding or WebAssembly container parsing.

What ZumiFiles Can Inspect

ZumiFiles inspects header signatures, structural metadata, string tables, and renders visual viewports directly in your browser.

⚡ Advanced ZumiFiles Inspection Capabilities for .GMK

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100% Client-Side WebAssembly Parsing: Parses file streams locally inside your browser sandbox with zero network uploads.

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Syntax & Structural Inspection: CodeMirror 6 grammar highlighting, line folding, and raw string inspection.

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Portable Sidecar Integration: Attach tags, 5-star ratings, custom color tints, and notes via portable .{filename}.json sidecars.

          Technical Parser Engine
          100% Client-Side WebAssembly
        
Proprietary binary format — ZumiFiles Hex Viewer & Byte Header analyzer

Flexible Ways to View Files in ZumiFiles

ZumiFiles adapts to your exact workflow. Choose how you want to open and inspect your files:

1. Browse Local Directory

Mount entire project folders directly from your computer using the browser's File System Access API. Navigate nested subfolders with dual-pane split screens.

2. Instant Single-File Preview

Drag and drop or select a single file to inspect it instantly in a sandboxed viewport. Perfect for quick checks without mounting whole directories.

3. Load Remote File URL

Paste any public web URL to fetch and render remote documents, 3D models, code files, or spreadsheets directly inside your browser.