减小 PSB 文件的大小

如果您将 PSB 格式另存为 PSD，则可以轻松对其进行压缩，但是 PSD 格式不支持宽度或高度超过 30000 像素的图像。在这种情况下，压缩 PSB 文件是更复杂的解决方案。你可以试试 PSB 压缩软件，但我们不能保证最终压缩的 PSB 文件是可读的。此应用程序使用未记录的PSB格式功能。为了提高正确工作的几率，请尝试使用不会删除重要数据的压缩功能。缩小 “按原样” 提供的 PSB 的大小。最好使用普通的 PSD 缩小大小应用程序

Drag and drop a file or select add Image

your image

Lossless PSD Compress methods

Lossy PSD Compress methods

Compress PSD

You can reproduce the main functionality of this built-in app using Aspose.PSD for .NET

        // Lossless PSB file reduce operation
        // Remove Cache Data			
        Stream RemoveCacheData(PsdImage image)
        {
            foreach (var layer in image.Layers)
            {
                // Can be applied
                if (layer is TextLayer || layer is FillLayer)
                {
                    layer.SaveArgb32Pixels(layer.Bounds, new int[layer.Bounds.Width * layer.Bounds.Height]);
                }
            }

            var stream = new MemoryStream();
            image.Save(stream, new PsdOptions(image));

            return stream;
        }

        // Applying RLE Compression to reduce size of PSD
        Stream ApplyRleCompression(PsdImage image)
        {
            foreach (var layer in image.Layers)
            {

                foreach (var channelInformation in layer.ChannelInformation)
                {
                    // Can be applied
                    if (channelInformation.CompressionMethod == CompressionMethod.Raw)
                    {
                        var stream = new MemoryStream();
                        image.Save(stream, new PsdOptions(image)
                        {
                            CompressionMethod = CompressionMethod.RLE
                        });

                        return stream;
                    }
                }
            }

            // Can not be applied
            return null;
        }

        // Lossy methods of PSD Size Reducing
        // 8 Bit Conversion
        Stream ApplyConversionTo8Bit(PsdImage image)
        {
            if (image.BitsPerChannel > 8)
            {
                var stream = new MemoryStream();
                image.Save(stream, new PsdOptions(image)
                {
                    ChannelBitsCount = 8
                });

                stream.Position = 0;

                return stream;
            }

            return null;
        }
       
        // RGBA Conversion
        Stream ApplyConversionToRGBA(PsdImage image)
        {
            if (image.ColorMode == ColorModes.Cmyk)
            {
                var stream = new MemoryStream();
                image.Save(stream, new PsdOptions(image)
                {
                    ColorMode = ColorModes.Rgb
                });

                stream.Position = 0;

                return stream;
            }

            return null;
        }

        // Layers merging
        Stream ApplyMergingLayers(PsdImage image)
        {
            if (image.Layers.Length > 1)
            {
                image.FlattenImage();
                var stream = new MemoryStream();
                image.Save(stream, new PsdOptions(image));

                stream.Position = 0;

                return stream;
            }

            return null;
        }

        // Remove Not Visible Layers
        Stream RemoveNotVisibleLayers(PsdImage image)
        {
            var layersSet = new List<Layer>();
            foreach (var layer in image.Layers)
            {
                // Can be applied
                if ((!layer.IsVisible || !layer.IsVisibleInGroup) && !(layer is LayerGroup))
                {
                    layersSet.Add(layer);
                }
            }

            image.Layers = layersSet.ToArray();
            var stream = new MemoryStream();
            image.Save(stream, new PsdOptions(image));

            return stream;
        }

You can download Aspose.PSD for .NET from Nuget package manager

You can reproduce the main functionality of this built-in app using Aspose.PSD for Java

    public class PsbCompressionUtils {

    public static OutputStream removeCacheData(PsdImage image) {
        for (Layer layer : image.getLayers()) {
            if (layer instanceof TextLayer || layer instanceof FillLayer) {
                layer.saveArgb32Pixels(layer.getBounds(), new int[layer.getBounds().getWidth() * layer.getBounds().getHeight()]);
            }
        }

        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        image.save(stream, new PsdOptions(image));

        return stream;
    }

    public static OutputStream applyRleCompression(PsdImage image) {
        for (Layer layer : image.getLayers()) {
            for (var channelInformation : layer.getChannelInformation()) {
                if (channelInformation.getCompressionMethod() == CompressionMethod.Raw) {
                    ByteArrayOutputStream stream = new ByteArrayOutputStream();
                    image.save(stream, new PsdOptions(image) {{
                        setCompressionMethod(CompressionMethod.RLE);
                    }});

                    return stream;
                }
            }
        }

        return null;
    }

    public static OutputStream applyConversionTo8Bit(PsdImage image) {
        if (image.getBitsPerChannel() > 8) {
            ByteArrayOutputStream stream = new ByteArrayOutputStream();
            image.save(stream, new PsdOptions(image) {{
                setChannelBitsCount(8);
            }});

            stream.Position = 0;

            return stream;
        }

        return null;
    }

    public static OutputStream applyConversionToRGBA(PsdImage image) {
        if (image.getColorMode() == ColorModes.Cmyk) {
            ByteArrayOutputStream stream = new ByteArrayOutputStream();
            image.save(stream, new PsdOptions(image) {{
                setColorMode(ColorModes.Rgb);
            }});

            stream.Position = 0;

            return stream;
        }

        return null;
    }

    public static OutputStream applyMergingLayers(PsdImage image) {
        if (image.getLayers().length > 1) {
            image.flattenImage();
            ByteArrayOutputStream stream = new ByteArrayOutputStream();
            image.save(stream, new PsdOptions(image));

            stream.Position = 0;

            return stream;
        }

        return null;
    }

    public static OutputStream removeNotVisibleLayers(PsdImage image) {
        List layersSet = new ArrayList<>();
        for (Layer layer : image.getLayers()) {
            if ((!layer.isVisible() || !layer.isVisibleInGroup()) && !(layer instanceof LayerGroup)) {
                layersSet.add(layer);
            }
        }

        image.setLayers(layersSet.toArray(new Layer[0]));
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        image.save(stream, new PsdOptions(image));

        return stream;
    }
}

You can download Aspose.PSD for Java from Aspose Repository

This App is completely free, but it just a small piece of functionality that offers for you Aspose.PSD library. You can make your own app with any functionality of Aspose.PSD. If you can not find needed feature in Aspose.PSD, you can post on PSD Support Forum. The great support, different priceing plans, prioritized bug fixes and feature releasing for the Paid Support Customers.

List of Aspose.PSD versions for different configurations

Aspose.PSD for .NET

Aspose.PSD for Java


Aspose.PSD for .NET has the version for the most popular .NET versions including: .NET Framework 2, 3.5, 4.0, 4.0CP, .netstandard 2, .NET 5, 6, 7. Version of .NET Library for .NET 7 is suitable for the mobile development		Aspose.PSD for Java made on the Java 1.6, so it can be used in the any popular Java configurations. It's suitable for Cross-platform developement
Official Aspose.PSD for .NET pageOfficial Aspose.PSD for Java page
Aspose.PSD for .NET Pricing plansAspose.PSD for Java Pricing plans

Please check the support forum. Where you can feel the real customer care

PSB 文件最大可达 2GB，因此当此应用程序无法上传 PSB 文件以减小其大小时，您可能会遇到这种情况。在这种情况下，最好使用 本地 psd 格式解决方案如 Aspose.PSD 然后自己写压缩代码。本文中可以找到热压缩 PSB 格式的代码示例，只需在内置 PSB File Reduce App 中切换选项卡即可