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ToolSuite
File & Archive Tools

Join Split File Parts

Rejoin numbered file parts back into the original file.

or drag them here

Any file · up to 200 MB · up to 200 files

Processed in your browser

Fill in the form and press “Join parts” to see the result here.

How to use it

  1. 1Select your file, or drag and drop it onto the upload area.
  2. 2Adjust the options if you need something other than the defaults.
  3. 3Press the button. Everything happens on your device.
  4. 4Download the result.

About the Join Split File Parts

Parts are sorted by natural filename order before joining, so part 2 comes before part 10 regardless of the order you selected them. The join order is shown so you can confirm it.

The type of the rejoined file is detected from its leading bytes, so the download gets a sensible extension even if the parts were named opaquely.

Questions people ask

Is your file uploaded to a server?

No. This tool runs entirely in your browser using standard web APIs, so your file never leaves your device. You can confirm it by opening your browser's network panel while the tool runs, or by disconnecting from the internet after the page has loaded.

Is it free, and do I need an account?

Yes, it is free, and there is no account, no sign-up and no watermark on the result. The project is funded by optional donations.