How to use the Archive Converter
- Drop in the archives to convert: ZIP, RAR, 7Z, or a TAR with or without gzip, bzip2 or xz.
- Pick the output: ZIP, 7Z, TAR.GZ or plain TAR. Enter the source password if an archive is encrypted.
- Click Convert and save the result. A batch gives one new archive per input.
Matching the format to the recipient
For clients and colleagues, ZIP is the safe bet because every desktop and phone opens it natively. For storage, 7Z is usually smallest and can hide file names behind a password. For a Linux server or developer, TAR.GZ is expected. Plain TAR only bundles, which suits a workflow that compresses later anyway.
Whatever the direction, the documents inside are byte-for-byte the same afterwards. Only the wrapper and its compression differ.
What survives the repack
Folder paths, empty folders and modification dates come across. Symbolic links inside tarballs are dropped, and Unix owners are not written into ZIP or 7Z.
Passwords do not transfer by themselves. The source is decrypted with the password you enter, and the output is unprotected unless you choose a fresh one in More settings, which is offered for ZIP and 7Z targets.
Mixed batches
You can drop a RAR from one supplier, a 7Z from another and a tarball from IT at the same time; all of them become the chosen format, each named after its source.
If one archive has the wrong password or is corrupt, only that row reports an error and the rest still complete.
Questions
Why is RAR not an output option?
Writing RAR requires the licensed WinRAR compressor. Free tools, this one included, can read RAR but not create it.
Will the new archive be smaller?
ZIP to 7Z usually shrinks document-heavy archives; RAR to ZIP often grows them slightly. Already compressed photos and video stay about the same.
Do my archives leave the computer?
No. 7-Zip runs in a worker behind this page; only its roughly 1.7 MB WebAssembly program is downloaded, while your archives stay local.