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アドビフォトショップファイルフォーマットソリューション

PSD、PSB向けのハイコードAPIと無料アプリにより、ファイルサイズの縮小と文書化されていない可能性を利用した圧縮が可能

PSD ファイルのサイズを小さくする

Aspose.PSD を使用すれば、大きな PSD のサイズを縮小するのは簡単な操作です。サイズの縮小は、PSDファイルからキャッシュデータを削除したり、レイヤーを結合したり、色あたりのビット数を減らしてPSD形式に変換したりすることでアーカイブできます。また、PSDファイルのカラーモードを変更することもできます。たとえば、CMYKカラーからRGBAカラーに変更すると、PSDファイルのサイズが小さくなります。このアプリは文書化されていないPSD形式の機能を使用していたため、最終結果が壊れる可能性があります。アーカイブしたい内容がわかっている場合にのみ、PSD File Reduceを使用してください。

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 PSD 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 CompressionUtils {

    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

PSDの代わりにPSBファイルのサイズを小さくする必要がある場合は、このアプリを少し変更することができます。チェックしてください。」PSB のサイズを小さくする「アプリケーション。