since 2000
Opening a DUM File
The DUM file type is primarily associated with PDF viewer.
What is a DUM file
DUM files mostly belong to PDF viewer.
DUM files are container files that do not always use their displayed extension to show their true format. In many cases the file holds PDF data, meaning that it is essentially a renamed PDF document. However, a DUM file can also store image formats such as JPEG or PNG.
If the file contains PDF data, any PDF reader should work. When the data is image based, you may find that the file is a document image file. For example:
- If the internal format is PDF, simply renaming the file to end with .pdf lets your PDF viewer open it.
- If it is a JPEG image, opening it with a common image viewer works. Learn more about JPEG support at JPEG.org.
- If it contains PNG data, many users use screenshot or image tools (such as those related to Greenshot) to view it. More on Greenshot is available at getgreenshot.org.
FilExt.com tip: Checking the file header with a hex editor may also reveal the true format. Changing the extension to the correct one frequently enables the proper application to display the file.
How to open DUM files
You need a suitable software like PDF viewer to open a DUM file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your DUM file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a DUM file directly in the browser:. Just drag the file onto this browser window and drop it.
Online DUM Text Viewer
or drag and drop it here
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Programs that open and convert DUM files:
- PDF viewer
See the previous paragraphs to learn more about the main application. DUM files are often referred to as PDF viewer data files because this type of file is primarily created or used by this software.
- Ada ADA
Technical Data for DUM File Extension
a dum container file is a special file format and should only be edited and saved with the appropriate software.
How to solve problems with DUM files
- Associate the DUM file extension with the correct application.
- Update your software that should actually open container files. Because only the current version supports the latest DUM file format. Search, therefore, e.g. on the manufacturer website after an available PDF viewer update.
- To make sure that your DUM file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
- Click here to open your .DUM file online - secure, fast, and no downloads needed.