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HomeFormats.PARTID

What is a .PART file?

A .part file is an unfinished download, renamed once it completes. Created by Firefox and other apps.

Did you know
  • Firefox and other browsers add the .part suffix while a download is still in progress.
  • Firefox writes a download to a .part file first, renaming it to the real name only once the transfer finishes.
  • Because a .part is an incomplete copy, it is normally unusable until the download completes.
What Analyser reads
Identify BitTorrent files (TORRENT) and their file list, plus partial or incomplete downloads (PART, CRDOWNLOAD).
Depth of analysis
.PART is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
Open a .PART file
Drag a .PART file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.