Archive tools that never see your files
Convert RAR, 7z, TAR and TAR.GZ to ZIP. Open archives Windows and macOS will not touch. Extract exactly the files you want, or build a new archive. All of it runs inside this browser tab.
Not “we delete your files after an hour” — there is no upload. This site has no API routes, no server functions and no storage. Its Content-Security-Policy restricts network connections to its own origin, so the browser itself would block an attempt to send your archive anywhere.
Convert to a format everything opens
Each of these decodes every entry with the source format's own decoder and writes a brand-new container. Nothing is renamed.
Convert RAR to ZIP
Convert RAR archives to ZIP without uploading them. Every entry is decoded with a real RAR decoder and re-compressed into a new ZIP, in your browser.
Convert 7Z to ZIP
Convert 7z archives to ZIP privately. Entries are decoded with libarchive in WebAssembly and re-packed into a new ZIP, with nothing uploaded.
Convert TAR to ZIP
Turn a .tar into a .zip in your browser. Entries are read from the tar stream and compressed into a new ZIP; nothing is uploaded.
Convert TAR.GZ to ZIP
Convert .tar.gz or .tgz archives to ZIP in your browser. The gzip layer is decompressed, the tar is read, and a fresh ZIP is built locally.
Convert ZIP to TAR
Convert a ZIP into a TAR archive locally. Entries are decompressed and written into a new USTAR container with PAX headers where paths need them.
Open, inspect and extract
Look inside before you commit to anything: entry list, sizes, compression ratio, checksums, encryption status and unsafe paths.
Open a RAR file
Open and browse RAR archives in your browser. See every file, its size and checksum, then extract what you actually need. No WinRAR, no upload.
Open a 7Z file
Browse and extract 7z archives in your browser. Inspect every entry, then pull out only the files you need. Nothing is uploaded.
Extract a ZIP file
Unzip files in your browser. Browse the contents, verify checksums, extract everything or a selection — including password-protected ZIPs.
Archive viewer
Inspect any ZIP, RAR, 7z, TAR or TAR.GZ archive in your browser: full file tree, sizes, compression ratio, checksums, encryption status and unsafe paths.
Create a ZIP file
Build a ZIP from files and folders without uploading anything. Drag a whole folder in, keep its structure, and download the finished archive.
Batch is not an afterthought
Drop a hundred archives. Reorder the queue, pause it, stop after the current one, or cancel outright. One corrupt file fails on its own and the rest keep going.
Real limits, stated up front
Entry counts, expanded size and compression ratio are checked from the archive’s own metadata before anything is decompressed. A bomb is refused with the numbers shown.
Paths are treated as hostile
Absolute paths, .. segments and Unicode look-alikes of them are blocked and named, not quietly rewritten into something you did not ask for.
Every output is re-read
Finished archives are parsed again with the reader for their own format and checked entry by entry before the download appears.
Why converting is not the same as extracting
These get conflated constantly, and the difference matters when you are choosing what to click.
Extracting takes the files out of a container. A ZIP holding three photographs gives you three photographs. Converting rebuilds the container itself: the same three photographs, in a different kind of box. Both are lossless, and neither changes what the files inside actually are.
What no tool can do — here or anywhere — is turn the contentsof an archive into a different kind of file. A ZIP is not secretly a 3D model or a spreadsheet. If a site offers “ZIP to STL” and produces something, it is either extracting an STL that was already inside, or giving you a file that is not a model. Unpack Forge does the first and says so: the archive viewer will find and pull out the .stl files an archive already contains, and it will not pretend to do anything else.
The formats page lists exactly which formats can be read, which can be written, where passwords genuinely work, and what the memory budgets are.