[英]Compress png with Java
i want compress png with graphicsmagick or ImageMagick using im4java , anyone can help me about it ? 我想使用im4java用graphicsmagick或ImageMagick压缩png,有人可以帮助我吗? i found
我发现
package example;
import com.googlecode.pngtastic.core.PngImage;
import com.googlecode.pngtastic.core.PngOptimizer;
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.InputStream;
/**
* Example pngtastic image optimization usage from java
*/
public class Test {
public static void main(String[] args) throws Exception {
// load png image from a file
final InputStream in = new BufferedInputStream(new FileInputStream("/input.png"));
final PngImage image = new PngImage(in);
// optimize
final PngOptimizer optimizer = new PngOptimizer();
final PngImage optimizedImage = optimizer.optimize(image);
// export the optimized image to a new file
final ByteArrayOutputStream optimizedBytes = new ByteArrayOutputStream();
optimizedImage.writeDataOutputStream(optimizedBytes);
optimizedImage.export("/output.png", optimizedBytes.toByteArray());
}
}
using pngtastic but it very small image before compress 198.3kB and after compress 179.6kB 使用pngtastic,但在压缩198.3kB之前和压缩179.6kB之后图像非常小
i found it pngnq on linux , you can install it and using Runtime.getRuntime().exec("pngnq <file png>");
我在Linux上找到了pngnq,可以安装并使用
Runtime.getRuntime().exec("pngnq <file png>");
in java 在java中
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