Tools
Merge several ZIP files into one
If you have received an archive in many parts, or collected several that belong together, we put them into one. Everything happens on your own machine — nothing is uploaded.
Choose the archives you want to merge
Your original archives are untouched. You get one new archive in addition to the ones you chose.
How it works
-
1
Choose two or more ZIP files. You can drag them in together, or pick them one at a time — the list builds up as you go.
-
2
Decide how they should be put together: each archive in its own folder, or everything at the same level.
-
3
Press «Merge the archives» and download the result. You are told whether any file names had to be changed along the way.
Two files cannot have the same name
That is the one real pitfall when archives are put together. If two of them hold a file called «photo.jpg», only one can keep the name — the other would otherwise overwrite the first without anyone noticing.
That is why «one folder per archive» is chosen in advance. Each source archive then gets its own folder named after the file, and no files can get in each other’s way. Choose «everything at the same level» instead, and the second «photo.jpg» becomes «photo (2).jpg», and you are told how many were changed.
Parts of a spanned archive cannot be merged here
If you receive files called something.z01, something.z02 and something.zip, those are not several archives — they are one archive cut into pieces by a program like 7-Zip or WinRAR. The pieces are not valid ZIP files on their own, and cannot be read without each other.
Those must be put together by a program that understands the format. 7-Zip is free and does the job: open the first part, and it finds the rest by itself.
Password-protected archives are skipped
If one of the files is locked, we cannot read it out without the password, and it is left behind. You are told which ones, rather than having them disappear quietly.
If a locked archive has to be part of the merge, unlock it under «Open ZIP file» first, make a new archive from the contents, and use that here.
Questions and answers
I have files called .z01 and .z02 — does that work?
No. That is one archive split by another program, not several independent archives, and the parts cannot be read separately. Use 7-Zip and open the first part, and they are put together automatically. Parts you make here with us are ordinary ZIP files, and those can be merged again without any trouble.
Are the folders inside the archives kept?
Yes. The whole folder structure comes along. If you choose «one folder per archive», it is simply placed one level further down, under a folder named after the source archive.
How many archives can I merge?
There is no fixed limit on the number of archives, but they are read one at a time, so many large archives take time. The limit of 20,000 files applies per source archive.
Does merging make the archive smaller?
A little, but not much. You save one table of contents per archive you remove, so a few hundred bytes each. The files themselves are compressed individually in the ZIP format, so there is no extra gain from gathering them.
Are my files uploaded?
No. Both the reading and the packing happen in your own browser. You can see it yourself in the Network tab of the developer tools — no request goes out while the work is running.