The first time I download some split files with .001,.002 and .003 extensions, I was confused about what to do with them. I first thought they were split archives and renamed them to .rar but I got nothing but error extracting the content. I googled out solutions but none made sense till I ran across a software that solved the issue. I was able to join the split files (not archive). Now, I have to explain this: .001 and .002 can either be whole files split into parts or split archives. You’re going to deal with them differently in each cases and there are two solutions I found.

1. Joining .001, .002 as split files

You should first try out this method as it worked in my case. It’s most likely that you’re dealing with a whole file, not a split archive. the file I downloaded the files and they looked like that looked like file_name.exe.001, file_name.exe.002 and so on. It could be file_name.pdf.001, file_name.ipa.exe but you’re likely to see the original extension in this case.

You need a software called hjsplit to join these split files and it’s quite easy to use.

How to use hjsplit to merge / join split files

– Run Hjsplit.exe

– Click Join

– Select Input File and locate the first .001 file.

– Click on Start, this should merge the file. It will locate the rest of the files so far you place them in the same folder.

2. Using 7zip archiver

This is another alternative and you only need it if the file is an archive. Download 7zip from sourceforge and install. This will treat the file as an archive instead and what you’re going to get is the whole content in a folder.

I sill suggest you try out the first method though.