Online CRN Viewer & Converter - Open .crn Files & Convert to PNG Free
Free online CRN viewer and decoder. Open, inspect, and preview Crunch .crn textures directly in your browser. Convert CRN to PNG without uploading files.
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Upload CRN File
Drag and drop a CRN file here
or
Key Features
Fast Crunch Decompression
Instant browser-based decompression of Unity Crunch (.crn) textures into high-fidelity previews.
Browser-Based Decoding
All decoding happens locally using WebAssembly - no server uploads
Real-Time Preview
Instantly view decoded textures with interactive zoom and pan controls
Channel Filtering
View individual RGBA channels or combined RGB output
PNG Export
Export decoded textures as standard PNG images
Detailed File Info
View comprehensive metadata including format, dimensions, and compression type
How to Use
Upload CRN File
Drag and drop or click to select a .crn file from your computer
View Decoded Image
The decoder automatically parses CRN and displays a preview
Inspect Details
Use channel filters and zoom controls to examine the texture in detail
Export if Needed
Download the decoded texture as a PNG file if required
Frequently Asked Questions
Simply drop your .crn file into this page. The WebAssembly decoder transcodes and displays Crunch textures instantly without needing the Unity editor or desktop command-line utilities.
Current decode path handles common DXT1/3/5, DXN, and DXT5A cases depending on file content.
No, decoding is fully local in the browser.
Channel filters let you view individual color channels (R, G, B, A) separately, which is useful for inspecting texture data like normal maps or packed textures.
You can export the decoded texture as PNG, which represents the transcoded output. Note that lossy compression means the result won't be pixel-perfect to the original source image.
Crunch applies perceptual quantization optimized for GPU block endpoints. At standard and high quality settings, visual differences from the original image are virtually imperceptible, and can be inspected pixel-by-pixel using our zoom and channel isolation controls.
The current version displays the base mipmap level. Support for viewing all mipmap levels is planned for a future update.
Any modern browser with WebAssembly support can run the decoder, including Chrome, Firefox, Safari, and Edge.