File Joiner
Join split parts (.001, .002…) back into one file. Free, no sign-up, files stay on your device.
Choose all partsor drag and drop files here
🔒 100% private — processing happens in your browser. Nothing is uploaded.
How to use the online file joiner
- Select all parts of the split file (for example
video.mp4.001,.002,.003). - Check the order — parts are sorted by number automatically, use ↑ to fix it.
- Click Join files to download the original file.
Put a file back together after it was split with our File Splitter, 7-Zip (“split to volumes” of a non-archive file), HJSplit or the Unix split command. The parts are simply glued together byte by byte in the order shown. If the original was a split ZIP or 7z archive, join it first and then open the archive. The free version accepts parts up to 25 MB each.