Join File Parts
Join File Parts online — Rejoin .part files back into the original file. 100% in your browser, no upload.
🔒 Archives are built and opened on your device — contents never touch a server.
Join File Parts: rejoin .part files back into the original file. Built on your device with no upload — even confidential files stay private.
About Join File Parts
Join File Parts in your browser. Rejoin .part files back into the original file. Splits/rejoins with simple byte slicing — entirely offline, so your files never leave your device.
How to use Join File Parts
- 1Drop ALL the .part files together.
- 2The result is created instantly.
- 3Download the output.
Why use Join File Parts?
- ✓A quick join file parts without WinRAR, 7-Zip or an upload site.
- ✓Private — files are processed locally.
- ✓Works on desktop and mobile in any modern browser.
Frequently asked questions
How do I join file parts?+
Drop your all the .part files here and the tool rejoins them into the original — all in your browser.
Is my data uploaded?+
No. Join File Parts runs entirely on your device, so even sensitive archives never touch a server.
What ZIP/gzip standard is used?+
Standard formats: ZIP with DEFLATE (RFC 1951) and gzip (RFC 1952), so the output opens in every common archive tool.
Is there a size limit?+
No fixed limit, but very large files use more memory since everything is processed in the browser. Splitting huge files first can help.
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