Free Online Excalidraw Viewer — Open .excalidraw Diagrams & Export PNG
View Excalidraw Whiteboards & Export PNG Online. View, pan, and zoom hand-drawn Excalidraw vector whiteboards and system architecture sketches with instant PNG export.
What is Excalidraw Viewer and what does it do?
The Excalidraw & Sketch Diagram Viewer is an offline hand-drawn vector sketch explorer that renders .excalidraw wireframes and system architecture diagrams.
Open whiteboard files, pan and zoom complex canvas scenes, and export high-resolution PNG images without internet connectivity.
- Render Excalidraw JSON elements: rectangles, ellipses, diamonds, arrows, lines, and text.
- Sketchy hand-drawn styling with custom fill colors and double-strokes.
- Pan and zoom navigation with light and dark canvas background modes.
- Export high-resolution PNG images for presentations and design docs.
How does Excalidraw Viewer work?
Decodes Excalidraw JSON element coordinates and styles, rendering vector geometries to an HTML5 Canvas with hand-drawn aesthetic algorithms.
100% private: all processing happens locally in your browser using client-side WebAssembly, WebCrypto, WebAudio, and HTML5 Canvas. Your files are never uploaded to any server.
Who needs Excalidraw Viewer?
Product Managers & UX Designers
Quickly review whiteboard wireframes and flow diagrams on computers without Excalidraw accounts.
Software Engineers
Inspect system architecture sketches and export PNG diagrams for technical design documents.
Supported file formats
Excalidraw & Sketch Diagram Viewer opens and processes the following file extensions directly in your browser:
.excalidraw.jsonHow to use Excalidraw Viewer — step by step
- 1
Open .excalidraw File
Select your exported Excalidraw JSON document.
- 2
Pan & Zoom Canvas
Navigate through wireframes, flowcharts, and sketches.
- 3
Export High-Res PNG
Download a crisp PNG rendering of the full whiteboard canvas.
Frequently asked questions
Does it support dark and light canvas modes?
Yes, toggle between clean light grid and slate dark canvas themes instantly.
Do my design diagrams stay private?
100% private. Files are rendered directly on HTML5 Canvas inside your local browser.
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