# GPU texture formats reference > Explore texture formats by quality, and the default and supported texture formats by platform. ## Texture formats, by quality The table below shows each format available in Unity, and their quality details. | **Texture format** | **Description** | **Channels** | **Quality** | **Bits per pixel** | **Size of 1024x1024 texture, in MB** | | -------------------------------------------- | ------------------------------------------------------------------------------ | ------------ | ------------- | -------------------------------------------------------------- | ------------------------------------------------------------------- | | **Alpha 8** | Uncompressed single channel (A) | A | High | 8 | 1 | | **R 8** | Uncompressed single channel (R) | R | High | 8 | 1 | | **R 16 bit** | Uncompressed single channel (R), very high precision | R | Very high | 16 | 2 | | **R Float** | HDR, uncompressed single channel (R), very high precision | R | Very high | 32 | 4 | | **R Compressed BC4** | Compressed single channel (R) | R | High | 4 | 0.5 | | **R Compressed EAC 4 bit** | Compressed single channel (R) | R | High | 4 | 0.5 | | **RG 32 bit** | Uncompressed two channel (RG), very high precision | RG | Very high | 32 | 4 | | **RG Float** | HDR, uncompressed two channel (RG), very high precision | RG | Very high | 64 | 8 | | **RG Compressed BC5** | Compressed two channel (RG) | RG | High | 8 | 1 | | **RG Compressed EAC 8 bit** | Compressed two channel (RG) | RG | High | 8 | 1 | | **RGB + 1-bit Alpha Compressed ETC2 4 bits** | Compressed RGBA, with alpha values fully opaque or fully transparent | RGBA | Medium | 4 | 0.5 | | **RGB 16 bit** | Also known as RGB 565. Quantized RGB | RGB | Medium | 16 | 2 | | **RGB 24 bit** | Uncompressed RGB. Converted to RGBA 32 bit for the GPU | RGB | High | 24 disk, 32 GPU | 3 disk, 4 GPU | | **RGB 48 bit** | Uncompressed RGB, very high precision. Converted to RGBA 64 bit for the GPU | RGB | Very high | 48 disk, 64 GPU | 6 disk, 8 GPU | | **RGB Compressed BC6H** | HDR, compressed RGB, 0 to +64k range | RGB | High | 8 | 1 | | **RGB Compressed DXT1** | Also known as BC1. Compressed RGB | RGB | Medium | 4 | 0.5 | | **RGB Compressed ETC** | Compressed RGB | RGB | Low | 4 | 0.5 | | **RGB Compressed ETC2** | Compressed RGB | RGB | Medium | 4 | 0.5 | | **RGB Crunched DXT1** | Also known as BC1. Compressed RGB, with additional on-disk Crunch compression | RGB | Low to medium | Variable | Variable | | **RGB Crunched ETC** | Compressed RGB, with additional on-disk Crunch compression | RGB | Low | Variable | Variable | | **RGB(A) Compressed ASTC HDR** | HDR, compressed RGB or RGBA, size & quality dependent on block size | RGB or RGBA | Low to High | 12x12: 0.89, 10x10: 1.28, 8x8: 2, 6x6: 3.56, 5x5: 5.12, 4x4: 8 | 12x12: 0.11, 10x10: 0.16, 8x8: 0.25, 6x6: 0.45, 5x5: 0.64, 4x4: 1.0 | | **RGB(A) Compressed ASTC** | Compressed RGB or RGBA, size & quality dependent on block size | RGB or RGBA | Low to high | 12x12: 0.89, 10x10: 1.28, 8x8: 2, 6x6: 3.56, 5x5: 5.12, 4x4: 8 | 12x12: 0.11, 10x10: 0.16, 8x8: 0.25, 6x6: 0.45, 5x5: 0.64, 4x4: 1.0 | | **RGB(A) Compressed BC7** | Compressed RGB or RGBA | RGB or RGBA | High | 8 | 1 | | **RGB9e5 32 Bit Shared Exponent Float** | HDR, quantized RGB, 0 to +64k range | RGB | Medium | 32 | 4 | | **RGBA 16 bit (4444)** | Quantized RGBA | RGBA | Medium | 16 | 2 | | **RGBA 32 bit** | Uncompressed RGBA | RGBA | High | 32 | 4 | | **RGBA 64 bit** | Uncompressed RGBA, very high precision | RGBA | Very high | 64 | 8 | | **RGBA Float** | HDR, uncompressed RGBA, very high precision | RGBA | Very high | 128 | 16 | | **RGBA Compressed ETC2** | Compressed RGBA | RGBA | Medium | 8 | 1 | | **RGBA Crunched DXT5** | Also known as BC3. Compressed RGBA. With additional on-disk Crunch compression | RGBA | Low to medium | Variable | Variable | | **RGBA Crunched ETC2** | Compressed RGBA, with additional on-disk Crunch compression | RGBA | Low to medium | Variable | Variable | | **RGBA Half** | HDR, half-precision (FP16) RGBA, –64k to +64k range | RGBA | High | 64 | 8 | ## Supported texture formats, by platform The table below shows each texture format available in Unity, and the platforms that support them. | **Texture format** | **Windows** | **macOS** | **Linux** | **Android** | **iOS & tvOS** | **Web (Desktop Browsers)** | **Web (iOS and Android browser)** | | -------------------------------------------- | ----------- | --------- | --------- | ----------- | -------------- | -------------------------- | --------------------------------- | | **Alpha 8** | yes | yes | yes | yes | yes | yes | yes | | **R 8** | yes | yes | yes | yes | yes | yes | yes | | **R 16 bit** | yes | yes | yes | partial (4) | partial (4) | **yes (10)** | yes (10) | | **R Float** | yes | yes | yes | yes | yes | yes | yes | | **R Compressed BC4** | yes | yes | yes | no | no | **yes** | no | | **R Compressed EAC 4 bit** | no | no | no | partial (9) | yes | no | yes | | **RG 32 bit** | yes | yes | yes | partial (4) | yes | no | no | | **RG Float** | yes | yes | yes | yes | yes | yes | yes | | **RG Compressed BC5** | yes | yes | yes | no | no | **yes** | no | | **RG Compressed EAC 8 bit** | no | no | no | partial (9) | yes | no | yes | | **RGB + 1-bit Alpha Compressed ETC2 4 bits** | no | no | no | partial (9) | yes | no | yes | | **RGB 16 bit**, also known as RGB 565 | yes | yes | yes | yes | yes | yes | yes | | **RGB 24 bit** | yes | yes | yes | yes | yes | yes | yes | | **RGB 48 bit** | yes | yes | yes | partial (4) | yes | no | no | | **RGB Compressed BC6H** | yes (1) | yes (1) | yes | no | no | **yes (1)** | no | | **RGB Compressed DXT1**, also known as BC1 | yes | yes | yes | no (3) | no | partial (2) | no | | **RGB Compressed ETC** | no | no | no | yes | yes | no | yes | | **RGB Compressed ETC2** | no | no | no | partial (9) | yes | no | yes | | **RGB Crunched DXT1**, also known as BC1 | yes | yes | yes | no (3) | no | partial (2) | no | | **RGB Crunched ETC** | no | no | no | yes | yes | no | yes | | **RGB(A) Compressed ASTC HDR** | no | no | no | partial (7) | partial (7) | no | partial (7) | | **RGB(A) Compressed ASTC** | no | no | no | partial (5) | yes (6) | no | yes (6 and 9) | | **RGB(A) Compressed BC7** | yes (1) | yes (1) | yes | no | no | **yes (1)** | no | | **RGB9e5 32 Bit Shared Exponent Float** | yes | yes | yes | yes | yes | yes | yes) | | **RGBA 16 bit (4444)** | yes | yes | yes | yes | yes | yes | yes | | **RGBA 32 bit** | yes | yes | yes | yes | yes | yes | yes | | **RGBA 64 bit** | yes | yes | yes | partial (4) | yes | no | no | | **RGBA Float** | yes | yes | yes | yes | yes | yes | yes | | **RGBA Compressed DXT5**, also known as BC3 | yes | yes | yes | no (3) | no | partial (2) | no | | **RGBA Compressed ETC2** | no | no | no | partial (9) | yes | no | yes | | **RGBA Crunched DXT5**, also known as BC3 | yes | yes | yes | no (3) | no | partial (2) | no | | **RGBA Crunched ETC2** | no | no | no | partial (9) | yes | no | yes | | **RGBA Half** | yes | yes | yes | yes | yes | yes | yes | **Notes:** 1. Except on pre-DX11 level GPUs, or macOS when using WebGL or OpenGL. When not supported, BC6H textures get decompressed to RGBA Half, and BC7 get decompressed to RGBA32 at load time. 2. With [linear rendering](/engine/6000.6/manual/materials-and-shaders/graphics-color/color-spaces.md) on web browsers that don't support sRGB DXT, textures are decompressed to RGBA32 at load time. 3. Except on Android devices with NVIDIA Tegra GPUs; these do support DXT/BC formats. 4. Requires GL\_EXT\_texture\_norm16 or corresponding Vulkan capability on Android. 5. Requires Vulkan or [GL\_KHR\_texture\_compression\_astc\_ldr](https://opengles.gpuinfo.org/listreports.php?extension=GL_KHR_texture_compression_astc_ldr) OpenGL ES extension. 6. Except on Apple A7 chip devices (2013). 7. Android: requires [GL\_KHR\_texture\_compression\_astc\_hdr](https://opengles.gpuinfo.org/listreports.php?extension=GL_KHR_texture_compression_astc_hdr) extension. iOS: requires A13 or later chip (2019). WebGL: requires [WEBGL\_compressed\_texture\_astc](https://developer.mozilla.org/en-US/docs/Web/API/WEBGL_compressed_texture_astc) extension and [HDR profile](https://developer.mozilla.org/en-US/docs/Web/API/WEBGL_compressed_texture_astc/getSupportedProfiles). When not supported, the texture is decompressed to RGB9E5 format, losing the alpha channel. 8. Except on Android devices with Imagination PowerVR GPUs. 9. Requires [WEBGL\_compressed\_texture\_astc](https://developer.mozilla.org/en-US/docs/Web/API/WEBGL_compressed_texture_astc) extension. 10. Requires [EXT\_texture\_norm16](https://developer.mozilla.org/en-US/docs/Web/API/EXT_texture_norm16) extension and WebGL 2. ## Supported texture formats in Web The following table provides the supported texture formats for the Web platform. | **Format** | **Description** | | ---------- | --------------------------------------------------------------------------------------------------------------------------------------------- | | **ASTC** | Adaptive Scalable Texture Compression (ASTC) is an advanced lossy texture compression format. Widely used for mobile browsers / devices. | | **DXT** | Also known as S3 Texture Compression (S3TC), DXT is mainly used for desktop browsers and devices. | | **ETC2** | Ericsson Texture Compression (ETC) is an older lossy texture compression format, lower quality than ASTC, used for mobile browsers / devices. | ## Additional resources: * [Texture Inspector window reference](/engine/6000.6/manual/materials-and-shaders/textures/textures-reference/class-texture-importer.md) * [Texture compression in Web](/engine/6000.6/manual/platform-specific/webgl/develop/texture-compression.md) * [Texture Compression format in Android](/engine/6000.6/manual/platform-specific/android/introducing/requirements-and-compatibility.md#texture-compression)