File splitter — break a large file into parts
Split a large file into fixed-size chunks, delivered as a ZIP. It runs entirely in your browser (0 uploads, works offline).
How to use it
- Add the file and set a chunk size.
- Split it.
- Download the ZIP of parts.
FAQ
How do I split a large file for free?
Add the file, set the chunk size in megabytes, and this page cuts it into numbered parts and zips them — on your device with no upload.
How do I put the file back together?
Concatenate the parts in numerical order. On a terminal, cat file.part* (or the Windows copy /b) rebuilds the original exactly.
Is my file uploaded anywhere?
No. Splitting happens entirely in your browser and nothing is transmitted or stored, which you can verify by turning off your Wi-Fi.
Why split a file?
To fit size limits on email, chat or storage, or to transfer a big file in manageable pieces.
Limits
Splits by byte size into a ZIP; it does not split archives by their internal entries.
Related
The create-ZIP tool bundles files; the bulk renamer renames many files.
Bookmark this page (Ctrl+D, or ⌘D on Mac) or install the app — it works offline the next time you need it.