Extract .RAR Files Online
(No Size Limits)
Open and unpack compressed folders instantly in any web browser. Perfect for Chromebooks, school laptops, and managed devices where software installation is locked.
About Decompression of RAR
A .rar file is a compressed folder made by WinRAR. It compresses better than ZIP, particularly across many similar files, which is why it stayed popular for large downloads long after ZIP became universal.
Why RAR is the awkward one
RAR is proprietary. The compression format is owned by RARLAB, and while the decompression source is published, it is not a free licence in the way ZIP or gzip are. That single fact explains most of the frustration around it: operating systems could not simply build support in, so for decades opening a .rar meant installing WinRAR or 7-Zip first.
| System | Opens it natively | What to do |
|---|---|---|
| Windows 11 (23H2 and later) | Yes | Right-click, Extract All |
| Windows 10 | No | Install 7-Zip or WinRAR, or extract on this page |
| macOS | No | Archive Utility has never supported RAR |
| ChromeOS | No | Extract on this page |
| Linux | Only with unrar installed | unrar x archive.rar |
WinRAR's famously endless trial exists because of that licensing. You are not required to pay, and it never stops working, which is a large part of why so many people have simply lived with the nag screen since the 1990s.
Why this one was hard to build
The usual way to run unrar in a browser hands the library the whole archive as a single array, which meant reading a multi-gigabyte .rar entirely into memory before starting. Large files died there with an opaque permission error, and a 32-bit WebAssembly address space caps out at 4 GB regardless, so buffering could never have worked.
The fix was not a different library. The unrar WebAssembly build already delegates all of its file access to JavaScript, defining hooks for open, read, seek, write and tell with 64-bit offsets. What was missing was an implementation of those hooks over a browser file rather than over Node's filesystem or an in-memory array.
Both halves have to be synchronous, because the WASM calls them mid-operation and cannot wait. Inside a worker that is possible: reads use a synchronous reader over a sliding window of the file, so only the current window is ever resident, and writes use a synchronous file handle. The archive is never copied into the WASM heap at all.
Encrypted RAR files
Password-protected RAR archives are supported, and the password is checked on your device and never transmitted.
What does not work
Multi-part archives split across several files, named .part1.rar and .part2.rar or with .r00 and .r01 extensions, are not supported. This is the most common reason a RAR fails here. If you have only one piece of a set, no tool can reconstruct the rest, and you need every part before extraction can start.
Related reading
RAR FAQ
Everything you need to know about how unpk.app processes RAR locally.
Is it safe to extract RAR files online with unpk.app?
Yes, extracting RAR files on unpk.app is completely secure. The entire decompression process runs locally in your browser memory via WebAssembly. Your RAR archive is never uploaded to a server, keeping your confidential contents entirely private.
Can I unpack large RAR archives like 5GB or 10GB files?
Yes! There are no artificial file size caps or upload limits for RAR archives. Since unpk.app extracts RAR files entirely within your browser using WebAssembly, you are only limited by your device's physical memory (RAM).
Do I need an app like WinRAR or 7-Zip to extract RAR files?
No software installation or browser extensions are needed to open RAR files. unpk.app decompresses RAR archives directly in your browser tab, making it ideal for restricted school Chromebooks or locked-down corporate environments.
Can unpk.app extract password-protected or encrypted RAR files?
Yes! unpk.app supports unlocking password-protected RAR archives locally. Since the password prompt and decryption run completely client-side in your browser, your passwords are never sent over the network or stored on any server.
Can I decompress RAR files on mobile browsers like iOS Safari?
Yes! You can extract and view the contents of RAR files directly on iOS Safari or Android Chrome. unpk.app runs smoothly on mobile devices, allowing you to open RAR archives on the go without installing extra apps.
Is there a limit on how many RAR files I can extract for free?
No. unpk.app offers unlimited, free RAR file extractions. Because the processing runs locally on your computer rather than our servers, we don't charge any fees or enforce any bandwidth or volume limits.
What other formats can I extract here besides RAR?
In addition to RAR, unpk.app supports 9 other formats: ZIP, RAR, 7Z, TAR, GZ, TAR.GZ, XZ, TAR.XZ, BZ2, and ISO. All formats are unpacked entirely locally inside your browser via WebAssembly.