What DDS compression formats are supported?

This tool supports the most common DDS formats: DXT1 (BC1), DXT3 (BC2), DXT5 (BC3), BC4 (ATI1), BC5 (ATI2), BC7, and uncompressed RGBA/BGRA/RGB formats. Cubemap and volume texture DDS files are not currently supported.

Can I crop the DDS texture before converting to AVIF?

Yes — the tool provides an interactive crop overlay on the decoded texture. Drag the corner and edge handles to define exactly which portion of the DDS texture you want in the output AVIF. Click Preview Crop to see the result before downloading.

Does my DDS file get uploaded to a server?

No. All processing — DDS decoding, cropping, and AVIF encoding — happens entirely in your browser using JavaScript and the HTML5 Canvas API. Your file never leaves your device.

Why convert DDS to AVIF?

DDS is a DirectX texture format designed for GPU hardware — not for sharing, web display, or archiving. AVIF is a modern image format supported by all major browsers and operating systems, offering excellent quality at small file sizes. Converting DDS to AVIF makes your game texture crops viewable and shareable anywhere.

What browsers support AVIF encoding?

Chrome 85+, Edge 85+, and Firefox 93+ fully support AVIF encoding via the Canvas API. Safari 16.4+ supports AVIF decoding; encoding via canvas.toBlob may vary. For best results use Chrome or Edge.

How do I reset and convert a different DDS file?

Click the Start Over button that appears after loading a file. This clears the current DDS and resets the crop area so you can load a new file.

DDS to AVIF Crop Converter

Load a DDS game texture, drag the crop handles to define exactly the region you need, preview the result, then download a modern AVIF. Supports DXT1–DXT5, BC4–BC7, and uncompressed DDS. Everything runs in your browser — your files never leave your device.

⚠ Your browser does not support AVIF encoding. Please switch to Chrome 85+, Edge 85+, or Firefox 93+ to convert DDS files to AVIF.

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Drop a DDS file here

or Browse Files · DDS supported

What This Tool Does

This tool decodes DDS (DirectDraw Surface) game texture files entirely in the browser using a JavaScript DDS decoder that supports DXT1/BC1, DXT3/BC2, DXT5/BC3, BC4, BC5, BC7, and uncompressed RGBA/BGRA/RGB formats. The decoded texture is rendered onto an HTML5 Canvas with an interactive SVG crop overlay. You drag the handles to define your crop region, and when you convert, the selected area is encoded to AVIF using the browser's native canvas.toBlob('image/avif') API. No server upload is required — the full workflow runs client-side. The output is a compressed AVIF file compatible with all modern browsers and operating systems.

Who This Is For

Game developers and modders who need to extract a specific region from a DDS texture and export it as a web-ready AVIF
3D artists who want to isolate and convert a specific area of a DDS normal map, diffuse, or specular texture
Content creators sharing game screenshots or texture details online where AVIF's small file size is an advantage
Anyone needing to trim and convert a DDS asset without installing Photoshop, GIMP, or a separate DDS plugin

DDS vs AVIF: Format Comparison

Property	DDS	AVIF
Primary use case	GPU texture storage (DirectX)	Web images, photos, graphics
Compression type	GPU block compression (DXT/BCn)	AV1-based intra coding
Browser display	Not supported natively	Supported in all modern browsers
Transparency support	Yes (DXT3, DXT5, BC7)	Yes — full alpha channel
File size (photo-like)	Large — GPU format not web-optimized	Small — excellent compression ratio
Mipmaps	Yes — stored in file	No standard mipmap support
Web shareability	Requires conversion or plugin	Directly viewable in browsers
Best for	Real-time rendering, game engines	Web delivery, sharing, archiving

Frequently Asked Questions

What DDS compression types are supported?▼

The tool supports DXT1 (BC1), DXT3 (BC2), DXT5 (BC3), BC4 (ATI1 single-channel), BC5 (ATI2 dual-channel), BC7 (high-quality), and uncompressed formats including RGBA8, BGRA8, and RGB8. Cubemap DDS and volume/3D textures are not currently supported.

How precise is the crop tool?▼

The crop operates at native pixel accuracy on the original DDS dimensions. The canvas is scaled to fit your screen for display, but the crop coordinates are mapped back to the full-resolution decoded texture before AVIF is generated. You get an AVIF at the exact pixel dimensions shown in the crop dimensions badge.

Can I move the crop selection after setting it?▼

Yes — click and drag anywhere inside the crop rectangle (away from the handles) to reposition it anywhere within the image. Handles resize; the interior pans.

Will the alpha channel be preserved?▼

Yes — for DXT3, DXT5, BC7, and uncompressed RGBA source files, the alpha channel is preserved in the AVIF output. DXT1 files with 1-bit alpha will also preserve transparency. AVIF supports full 8-bit alpha.

What browsers are supported?▼

All modern browsers — Chrome 85+, Edge 85+, Firefox 93+ support AVIF encoding via canvas. Safari 16.4+ may support encoding; for guaranteed results use Chrome or Edge. The DDS decoder and crop UI work in all modern browsers regardless.

Is there a file size limit?▼

There is no server-imposed limit because no upload occurs. The practical limit is your browser's available RAM. Most modern desktops handle typical DDS game textures (up to 4096×4096) comfortably.

DDS to AVIF Crop Converter

What This Tool Does

Who This Is For

DDS vs AVIF: Format Comparison

Frequently Asked Questions

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