What is a PART File and How to Open or Convert It?

PART files represent partially downloaded files from the Internet, which can be of any type, such as software, documents, videos, audios, etc. It is generated when the download process is incomplete. In other words, when the download is still in progress or interrupted, you will see the downloaded file ending with a .part extension, such as XXXX.mp4.part. Once the download is complete, you'll notice that the file has removed the .part extension and returns to its assumed filename, such as XXXX.mp4.

There are several programs that create files of this type. The most common is the Mozilla Firefox browser. (By the way, Google Chrome generates partially downloaded files in CRDOWNLOAD format). Other file transfer programs, such as Go!Zilla and eMule, also generate such files.

Some PART files can be opened directly even if they are incomplete. For example, video and audio files can be opened and played with VLC media player. You can also play in other media players by removing .part extension. But you need to be aware that these files will only represent part of the total content, since they are incomplete files after all.

Other types of PART files, such as software, games, and compressed files, cannot be opened. In this case, it is recommended that you resume the download process or download the file again.

How to Resume Downloads in Firefox?

• Open Firefox
• Click the download button to open the Downloads Library (or press Ctrl + J)
• Find the unfinished download and right-click on it to select Resume.

Unfortunately, there is no way to convert a .part file to .mp4, even if it contains video data. Therefore, do not trust any PART-to-MP4 converter that claims to achieve this conversion. The only way to get the full video is to resume the download or re-download the file.

That’s all I want to share about the PART file. If you have any doubts, please feel free to reach me at any time. Thanks for reading!