Extract RAR, 7z & TAR Files

How to extract a RAR, 7z or TAR file online (free)

1. Drop your archive onto the box above, or click to choose a file. For a split archive, drop all the parts together.
2. Browse the folders, search by name, and click any file to preview it. Nothing is unpacked until you ask for it.
3. Download a single file, tick a few and download them as one archive, or take everything — as .zip, .7z, .tar.gz or .tar. In Chrome and Edge you can also save straight to a folder.

Which formats are supported?

The extractor runs on 7-Zip, built from its official source and compiled to WebAssembly, together with zip.js for ZIP files. These formats have been tested:

• Everyday archives: .zip and ZIP-based files (.jar, .apk, .epub, .docx, .cbz), .7z, and .rar in both RAR4 and RAR5 form, including .cbr.
• Tarballs and compressed files: .tar, .tar.gz, .tar.bz2, .tar.xz, .tar.zst, .tar.lz4, and single files compressed as .gz, .bz2, .xz, .zst, .lz4, .lzma, .Z or .br.
• Disc and disk images: .iso (ISO 9660, Joliet, UDF), Apple .dmg, Windows .wim, raw .img files with ext2/3/4 file systems and GPT or MBR partition tables, fixed VHD and QCOW2. FAT and NTFS volumes are read too. Raw CD dumps (.bin with or without a .cue, .mdf) are converted to a standard ISO on the fly so their files can be listed; audio tracks are skipped.
• Installers and packages: .cab, .msi, NSIS and Inno Setup installers, self-extracting .exe files, .deb, .rpm, and macOS .pkg/XAR packages.
• Older Unix and DOS-era formats: CPIO, AR, LZH and ARJ.

Some things are not supported, and it is better to know before you try: encrypted DMG images, InstallShield installers and password-protected Inno Setup installers, macOS packages with a pbzx payload, and 7z archives that use non-standard Zstandard, Brotli or LZ4 codecs. Each format page linked below lists its own details.

Browse, preview and extract only what you need

Opening an archive shows its file list first. You get a folder tree with breadcrumbs, sortable columns and a search across the whole archive. Click a file to preview it: images, text and source code with syntax highlighting, the first pages of a PDF, audio, video, and a hex view for everything else. The preview also shows the stored CRC32 and can compute MD5, SHA-1, SHA-256 and SHA-512 checksums. In an Android .apk, AndroidManifest.xml is shown decoded to readable XML.

A file is only decompressed when you preview, download or save it, so taking one document out of a large archive does not mean unpacking the rest. Archives inside archives can be opened in place. Hidden system files such as __MACOSX, .DS_Store and Thumbs.db are tucked away by default.

When the archive is a .zip, an Edit this ZIP button appears in the toolbar. It opens the same editor as the ZIP editor page with your archive already loaded, so you can add, remove, rename or move files and save the ZIP again. Untouched files are copied as they are, without recompressing. Other formats cannot be edited in place; tick the files you want and download them as a new archive instead.

Passwords, split archives, integrity test and file names

Password-protected ZIP, 7z and RAR archives prompt for the password, and a wrong one is reported clearly. Split and multi-volume sets — RAR volumes, .zip with .z01, .7z.001 and plain .001/.002 parts — open when you drop every part together.

The Test button checks every file against its stored checksum and reports the damaged ones; it does not fix them. If a ZIP is truncated and its directory is missing, the tool scans the file and lists the entries it can still find: the intact files extract and the broken ones are reported. And when a ZIP made on a system with another language shows scrambled file names, the filename encoding dropdown lets you pick the right legacy encoding with a live preview. That fix applies to ZIP files only.

Why katlab’s extractor is different

Most “online extractor” sites upload your archive to their servers to unpack it. This one doesn’t. The archive is read inside your browser tab, so your files never touch the network and there is nothing to leak, cache or delete later. There is no account either. Turn off your Wi-Fi after the page loads and the tool still works.

Frequently asked questions

Which archive formats can it open?

RAR (RAR4 and RAR5), 7z, ZIP and ZIP-based files such as JAR and APK, TAR and compressed tarballs (.tar.gz, .tar.bz2, .tar.xz, .tar.zst), single .gz, .bz2, .xz, .zst and .br files, ISO, DMG and WIM images, CAB, MSI, NSIS and Inno Setup installers, DEB and RPM packages, plus CPIO, AR and LZH. Encrypted DMGs and InstallShield installers are not supported.

Can I extract just one file instead of the whole archive?

Yes. The file list is shown first and a file is only decompressed when you preview or download it. The exception is a solid archive, such as most .7z files and compressed tarballs: reaching one file there means decompressing everything stored before it, which can take a while for a large archive.

Can it join split .001 / .002 files?

Yes. Drop all the parts at once and the set is opened as one archive. Numeric .001/.002 parts, 7-Zip volumes, multi-volume RAR sets (.part1.rar or .r00) and split ZIPs (.z01) all work. If a part is missing, the tool names it and only the complete files can be extracted.

Are my files uploaded to a server?

No. Everything runs locally in your browser with WebAssembly. Your files never leave your device, and the page keeps working offline once it has loaded.

Can it open password-protected archives?

Yes. Encrypted ZIP (ZipCrypto and AES-256), 7z and RAR archives prompt for the password, including those with encrypted file names. You need to know the password; there is no way to recover a lost one. The password stays on your device, like your files.

Is there a file size limit?

There is no fixed cap. The archive is read from your disk in pieces rather than loaded into memory, and extracted data is written to your browser’s private temporary storage. The practical limit is the free space in that storage, normally a share of your free disk space. Some private-browsing modes have no such storage; the tool then falls back to memory and large archives may fail.