Aspose.Pdf open pdf file error

Aspose.PDF Product Family
1

use python, aspose-pdf=25.5.0,open pdf file error
document = ap.Document(file_path)

RuntimeError: Proxy error(InvalidPdfFileFormatException): Trailer not found
file:
GB2828-2003 抽样标准.pdf (5.1 MB)

2

@David_Matin

The error you’re encountering, InvalidPdfFileFormatException: Trailer not found, indicates that the PDF file you’re trying to open is either corrupted or not in a valid PDF format. Here’s how to diagnose and resolve the issue:

  1. Check the PDF File: Ensure that the PDF file is not corrupted. Open it with a standard PDF viewer (like Adobe Acrobat) to confirm it opens without issues.

  2. File Path: Verify that the file_path variable correctly points to the PDF file. Check for any typos or incorrect paths.

  3. File Format: Confirm that the file is indeed a PDF. Sometimes files may have a .pdf extension but are not in valid PDF format.

  4. Update Aspose.PDF: Make sure you are using the latest version of the Aspose.PDF library. If you are on version 25.5.0, consider updating to the latest version to take advantage of bug fixes and improvements.

  5. Try a Different PDF: If possible, test with another PDF file to see if the issue persists. This will help determine if the problem lies with the specific file or the library itself.

Here’s a minimal code snippet to help you check if the file can be opened:

import aspose.pdf as ap

file_path = "path/to/your/file.pdf"

try:
    document = ap.Document(file_path)
    print("PDF opened successfully!")
except ap.InvalidPdfFileFormatException as e:
    print(f"Error: {e.message}")
except Exception as e:
    print(f"An unexpected error occurred: {e}")

Please follow these steps and let me know if you need further assistance or if the issue persists!