Online CRN Viewer & Decoder - Read and Open CRN, Convert to PNG
Discover the best free online CRN viewer meant to easily decode and read .crn files within seconds. Decode complex textures directly and export from CRN to standard PNG format safely.
Related Resources
Upload CRN File
Key Features
CRN-focused decoding
Powered by crunch wasm for end-to-end CRN container decode and preview.
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
.crn is Crunch's compressed texture container, typically transcoded to BC block-compressed data.
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.
Basis Universal uses lossy compression, so some quality loss is expected. The amount depends on whether ETC1S (more loss) or UASTC (less loss) was used during encoding.
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.