No uploads · runs in browser
Split & Join Files
Split a large file into chunks you can download as a ZIP, and join the parts back into one file.
Splitting and joining run entirely on your device. Files are never uploaded.
Favorite it to find it fast on home
When to use it
Split a 1GB video into 100MB chunks for upload
Fit under a 25MB messenger attachment limit
Join parts and compare hashes to confirm the original
How to use it
1Step 1Pick a file in What do you want to do, or drag and drop it
2Step 2Press Split and save ZIP and it is done
3Step 3Download the result, or send it with the share button
If the result looks off
The file will not open
Check that the format is supported. If it is password protected, unlock it and try again.
I do not like the result
Your original is untouched — change the options or preset and try again.
Frequently asked questions
Why split a file?
To get past email or messenger attachment limits, then reassemble it on the other side.
How do I know the joined file is identical?
Both screens show a SHA-256 hash. If they match, the file is restored perfectly.
What if the parts are out of order?
They are sorted by file name automatically, so leave the part names as they are.