Open Microsoft Cabinet (.cab) files directly in your browser - no 7-Zip, no WinRAR, no admin rights needed. Browse driver packages, Windows Update (.msu) payloads, installer cabinets, and font packs. Preview files inline, extract individual drivers and DLLs, or grab the entire archive as a ZIP. Need to pull icons or resources out of the extracted executables? Use the EXE Icon Extractor or DLL Icon Extractor. Working with other archive formats? Open ZIP, RAR, 7Z, TAR, GZ, BZ2, XZ, or ISO in the Archive Viewer.
or click to browse - works for .cab files up to 500 MB
Drag your .cab file (or .msu Windows Update package) onto the upload area, or click to browse. Files up to 500 MB work comfortably - everything is read in your browser via WebAssembly.
Navigate folders with the breadcrumb trail. Use the search bar to find specific files - particularly handy for locating a .inf driver file or a specific DLL inside a large installer cabinet.
Click any .inf, .txt, .xml, or other text file to read its contents without extracting. Useful for inspecting driver INF directives or installer manifests.
Grab individual drivers, DLLs, or installer files with the download icon. Click Extract All as ZIP to repackage the entire cabinet with a branded README inside.
Once you have an executable extracted, you can pull icons out of it with the EXE Icon Extractor or the DLL Icon Extractor.
A CAB file (short for Cabinet) is a Microsoft-proprietary archive format used throughout the Windows ecosystem to bundle, sign, and compress files. Unlike ZIP, CAB supports multiple compression algorithms - including LZX (high ratio), Quantum (legacy), and DEFLATE (same as ZIP) - and includes built-in digital signature support for integrity verification, which is why Microsoft uses it for trusted system content.
.inf, .sys, .cat, and supporting filesCAB is the raw archive format - just a compressed container with a folder structure. ZIP is a similar general-purpose container, but lacks the digital signature features that Windows uses for trust. MSI (Windows Installer Package) is a higher-level format that includes a relational database describing the installation logic - and often embeds CAB files for the actual payload. If you want to extract the payload from an MSI, this CAB tool can open the inner cabinets after you extract them with a tool like 7-Zip or msiexec.
Need to bundle files into a new archive instead of opening a CAB? Use the Archive Creator (which makes ZIP and TAR archives - CAB creation requires Microsoft's tooling). For other archive formats, the Archive Viewer handles ZIP, RAR, 7Z, TAR, GZ, BZ2, XZ, and ISO.
Navigate the CAB's folder hierarchy with breadcrumbs - the same view you'd see if you extracted the cabinet to disk.
Search by filename across the whole cabinet - quickly locate oem.inf, driver.sys, or any specific file.
Read .inf driver descriptors, .mum update manifests, and .xml configs inline without extracting.
Extract just the driver, DLL, or installer file you need - no need to dump the whole cabinet to disk.
Repackage the entire cabinet as a ZIP with the original folder structure preserved and a branded README inside.
Supports all three CAB compression algorithms - works with modern and legacy cabinets.
Works on Chromebooks, work-locked PCs, and mobile devices where installing desktop software isn't an option.
Everything runs in your browser via WebAssembly. Safe for internal corporate drivers and proprietary CABs.
A CAB (Cabinet) file is a Microsoft-proprietary archive format used to bundle Windows components - drivers, installer payloads, system updates (.msu), font packs, and software setup files. CAB uses LZX, Quantum, or DEFLATE compression and is signed for integrity. It is the workhorse archive format inside the Windows ecosystem.
Drop your .cab file onto this page and the contents appear in your browser immediately. No installation needed, no admin permissions, no third-party software. Particularly useful when you're on a work-locked PC, Chromebook, or mobile device and can't install desktop tools - but you still need to peek inside a CAB.
Yes - driver packages from Microsoft and OEMs are commonly distributed as CABs. You can extract the .inf (driver descriptor), .sys (kernel driver), .cat (catalog signature), and any supporting files for manual installation via pnputil /add-driver or Device Manager's "Have Disk" workflow. Handy for copying drivers to an offline machine.
A .msu Windows Update file is itself a wrapper that usually contains an inner .cab archive plus a properties file and a WSUS metadata XML. This tool opens .msu files directly. Once inside, you'll see the inner .cab - open that too to access the actual update payload, including the .mum and .manifest files used by Windows Servicing.
Yes - click the download icon next to any individual file in the listing to grab just that one entry. Especially handy when you only need one driver file, DLL, or icon from a large installer cabinet without dumping the whole archive to disk.
Indirectly yes - many CABs contain .exe or .dll files that have embedded icons. Extract the executable from the CAB with this tool, then run it through the EXE Icon Extractor or DLL Icon Extractor to pull the icons out as PNG, ICO, or other formats.
No - the entire archive is parsed in your browser via WebAssembly. The CAB never leaves your device, which makes this safe for internal corporate installers, private driver packages, and proprietary OEM software bundles. Still concerned? Please contact us and we'll be happy to help!
The viewer handles CABs up to 500 MB comfortably on modern devices. Larger cabinets (some Windows feature packs and language packs) may still work but parsing speed depends on your device's available memory.
Both are compressed archive containers, but CAB is Microsoft-proprietary and supports digital signatures (which is why Windows uses it for trusted system content - drivers, updates, system files). ZIP is the universal cross-platform format. Both can use DEFLATE compression, but CAB also supports LZX and Quantum for better ratios on Windows binaries.
For those, use the Archive Viewer which handles ZIP, RAR, 7Z, TAR, TAR.GZ, GZ, BZ2, XZ, and ISO in addition to CAB. Or for ISO disc images specifically, the ISO File Viewer.