since 2000
Opening MASS Files
The MASS file type is primarily associated with Mass Downloader.
What is a MASS file?
MASS files mostly belong to Mass Downloader by MetaProducts Corporation. Mass Downloader (MD) is a Windows program that allows you to download individual files (or lists of files) from Web and FTP sites at the maximum available speed. Multiple channel technology reduces download time. MD also allows you to browse ZIP archives before loading them and to choose only the desired file(s) to download. Downloads get the .MASS extension while downloading and it is removed when the download is complete.
How to open a MASS file
You need a suitable software like Mass Downloader to open a MASS file. You need a suitable software like Mass Downloader from MetaProducts Corporation to open a MASS 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 MASS file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a MASS file directly in the browser:. Just drag the file onto this browser window and drop it.
Online MASS Text Viewer
or drag and drop it here
Read our privacy guarantee in Filext’s terms and privacy policy
Please allow ads on our site
This helps us keep our servers running. Then re-upload your file to view it.Click here to see how to disable the ad blocker for filext.com
How to extract texts from MASS files or capture a screenshot to PDF, JPG, DOCX, TXT, ...
You can extract texts from MASS file or capture a preview screenshot using our online MASS file viewer:- Just click the "Choose your .mass file to view" button on this page.
- Your MASS file will then be displayed in the browser.
- Now click on "Save as..." at the top of the page.
- Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
- Your file will be converted and downloaded.
.MASS File Won't Open? Here is What You Can Do
Because .MASS files can originate from different programs, they aren't universally openable.
- Identify the Source: If downloading large files, it is likely an incomplete download from Mass Downloader. If received from a researcher, it may be specialized mass spectrometry data.
- Check the Header: Open the file in a text editor or hex viewer to inspect the first bytes.
- Readable XML/JSON suggests a structured data file.
- Random binary data often indicates an incomplete download.
- Use the Original Software: The original program is usually required to open the file. Try MetaProducts Mass Downloader, or ask the sender if you are uncertain.
- Use this Webpage: Drag and drop your .MASS file into our viewer to detect the format, extract readable text, and preview when possible.
Technical Data for MASS File Extension
The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.
ProgramID: Mass Downloader work file
EXEFile: %ProgramFiles%\Mass Downloader\massdown.exe
EXEFile: %ProgramFiles%\Mass Downloader\massdown.exe
a mass Partial Download is a special file format by MetaProducts Corporation and should only be edited and saved with the appropriate software.
How to solve problems with MASS files
- Associate the MASS file extension with the correct application.
- Update your software that should actually open partial downloads. Because only the current version supports the latest MASS file format. Search, therefore, e.g. on the MetaProducts Corporation manufacturer website after an available Mass Downloader update.
- To make sure that your MASS file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
- Click here to open your .MASS file online - secure, fast, and no downloads needed.