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PART ZIP
File conversion

Convert PART to ZIP

Verified by Adam B.· reviewed by FE Editorial ·updated Jul 24, 2026
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Is it possible to convert PART to ZIP?
Yes - PART converts to ZIP.

Resume the download in Firefox (Ctrl+J) or re-download from the original URL. If the download reached 100%, rename the file by removing .part from the end. A truncated .zip is corrupt and cannot be opened regardless of its name - missing bytes cannot be recovered.

Also to ZIP: KGL · IMAZINGAPP · LOCKER

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Tested on macOS, Windows & Linux
Last verified Sep 2026

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Why convert PART to ZIP?

A .part file is an unfinished ZIP sitting on disk under a temporary staging name used by Firefox, wget, aria2, and other download managers during active transfers. The goal is recovering the complete archive, not converting between formats - the .part suffix is the only obstacle when the download finished successfully.

How to convert PART to ZIP

Mozilla Firefox FREE

Press Ctrl+J to open the Downloads panel, find the interrupted item, and click the resume arrow. Firefox renames filename.zip.part to filename.zip automatically when the download reaches 100%.

7-Zip FREE

As a last resort, rename the .part file to .zip and open it with 7-Zip. 7-Zip reads local file headers and may recover files fully written before the download stopped, but entries near the end of the archive are likely corrupt.

About these formats

.PART Partial Download File

A PART file is a temporary file a downloader writes while data is still arriving. Firefox saves an active download as "filename.ext.part" and renames it to the real name only when the…

Open .PART details →
.ZIP ZIP Archive

A ZIP file is a compressed archive that stores one or more files in a single smaller package. On Windows, macOS, iOS, and Android you can open it without installing anything - just…

Open .ZIP details →

Quality & what to watch

  • A ZIP whose download was interrupted is corrupt - a truncated .zip fails its checksum and most or all entries inside will be unreadable.
  • Rename filename.zip.part to filename.zip only when the file size matches the expected archive size - partial renaming does not repair missing bytes.
  • Server support for HTTP range requests is required for any resume to work; if the server does not support them, the download must be restarted from the beginning.

Frequently asked questions

7-Zip says the archive is corrupt when I open my renamed `.part` file - why?
The download was interrupted before completing, so the ZIP's central directory and checksums are incomplete; partial extraction may recover some files but cannot repair the archive.
Can I extract at least some files from a partial ZIP?
7-Zip can sometimes read local file headers and extract entries that were fully received before the download stopped, even if the central directory is missing.
The download shows 100% but the file still ends in `.part` - what should I do?
Compare the file size to the expected archive size; if they match, rename the file to .zip and open it normally.