Mhtml to pdf conversion - OutOfMemoryError: Java heap space

Aspose.HTML Product Family
1

Volleyballclub Baustetten e. V. :volleyball:.zip (41.5 KB)

language: java21
aspose-html 25.2.2

when i tried to convert the attached mhtml file to pdf, the java program ran for more than 8 minutes and then threw OutOfMemoryError: Java heap space

please help to fix this

2

@divine1

The OutOfMemoryError: Java heap space error you are encountering during the conversion of an MHTML file to PDF typically indicates that the Java Virtual Machine (JVM) has run out of memory. This can happen when processing large files or when the memory allocated to the JVM is insufficient for the operation.

Here are some steps you can take to resolve this issue:

  1. Increase Java Heap Size: You can increase the maximum heap size allocated to the JVM. This can be done by setting the -Xmx option when starting your Java application. For example, to set the maximum heap size to 2 GB, you would use:

    java -Xmx2g -jar your-application.jar

  2. Optimize MHTML File: If possible, try to optimize the MHTML file you are converting. This could involve reducing the size of images or simplifying the content to decrease memory usage during conversion.

  3. Use PdfSaveOptions: When converting, you can customize the PdfSaveOptions to manage memory usage better. For instance, you can adjust the JPEG quality or set specific page sizes to reduce the overall memory footprint. Here’s a simple example of how to set up the conversion with options:

    try (java.io.FileInputStream fileInputStream = new java.io.FileInputStream("path/to/your.mht")) {
    com.aspose.html.saving.PdfSaveOptions options = new com.aspose.html.saving.PdfSaveOptions();
    options.setJpegQuality(80); // Adjust JPEG quality to reduce memory usage
    String outputFile = "output.pdf";
    com.aspose.html.converters.Converter.convertMHTML(fileInputStream, options, outputFile);
}

  4. Monitor Memory Usage: Use tools like VisualVM or JConsole to monitor the memory usage of your application while it runs. This can help you identify if there are specific points where memory spikes occur.

  5. Check for Memory Leaks: Ensure that your application does not have memory leaks, which can exacerbate memory issues. Review your code for any objects that are not being released properly.

By following these steps, you should be able to mitigate the OutOfMemoryError and successfully convert your MHTML file to PDF. If the problem persists, consider breaking down the MHTML file into smaller parts for conversion.

For more detailed information on converting MHTML to PDF and managing options, you can refer to the official documentation here.

If you have any further questions or need additional assistance, feel free to ask!

3

when i ran the input files attached in below link using aspose-html 25.3, it ran infinitely. kindly fix this issue

4

@divine1

We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.

Issue ID(s): HTMLJAVA-2019

You can obtain Paid Support Services if you need support on a priority basis, along with the direct access to our Paid Support management team.