Browse ISO Files Online — Explore Disc Images Without Mounting
ISO files are disc images — byte-for-byte copies of a CD, DVD, or Blu-ray disc. They're commonly used to distribute operating systems (Ubuntu, Fedora, Windows installers), software, and classic games. Mounting an ISO traditionally requires virtual drive software (like Daemon Tools on Windows or Disk Utility on macOS) or burning it to a physical disc.
FastZip lets you browse and extract files from ISO images directly in your browser using Preview mode — no mounting software, no burning, no admin rights.
What you can do with ISO browsing — Many ISOs contain specific files you need without requiring the full installation. For example: grabbing a driver from a Windows driver disc, checking the README or version file from a Linux ISO before downloading the full install, or extracting a specific configuration file from a software disc.
ISO 9660 and UDF filesystems — ISO images use either ISO 9660 (the original CD-ROM format, max 4 GB per file, 8-character filenames in strict mode) or UDF (Universal Disk Format, used for DVDs and Blu-rays, supports larger files and longer names). FastZip handles both through libarchive's ISO support. Most software and OS distribution ISOs use a combination: ISO 9660 for compatibility with a UDF extension for larger files.
Linux distribution ISOs — Ubuntu, Fedora, Mint, Debian, and other Linux distribution ISOs contain the live system, bootloader, and installer. Browsing with FastZip reveals the casper/ or live/ directory with the compressed filesystem (squashfs), the EFI/ bootloader, and isolinux/ configuration. Useful for verifying ISO integrity before burning or checking specific boot parameters.
Size limit note — Linux ISOs are typically 800 MB–2 GB, which exceeds the free tier 200 MB limit. For large ISOs, the Pro tier (2 GB) is needed. For smaller software or driver discs (under 200 MB), the free tier works fine.
Format & Feature Reference
| ISO Type | Filesystem | FastZip Support |
|---|---|---|
| Software discs (small) | ISO 9660 / UDF | Full |
| Linux ISO (< 200 MB) | ISO 9660 / UDF | Full (free tier) |
| Linux ISO (> 200 MB) | ISO 9660 / UDF | Pro tier required |
| Windows installer ISO | UDF | Browse only |
| DVD-Video ISO | UDF / VIDEO_TS | File listing (no playback) |
| Game ISO (disc image) | ISO 9660 / custom | Varies by format |
Extracting Files from a Linux ISO Without Burning
Linux ISOs often contain setup scripts, preseed configuration files, or specific packages you might want without running the installer. FastZip's Preview mode lets you browse the full ISO directory tree and download individual files.
For Ubuntu-based ISOs, look for casper/filesystem.manifest (package list), README.diskdefines (edition info), and EFI/boot/ (bootloader files). Fedora ISOs contain .treeinfo metadata and images/ with the boot kernel and initrd.
Driver Disc ISOs on Windows
Hardware manufacturers sometimes provide drivers as ISO images rather than plain ZIP files — especially for RAID controllers, specialized networking hardware, and server components. If you need a specific .inf or .sys driver file from such an ISO without mounting it, FastZip's ISO browser saves you from needing to install Daemon Tools or similar software.
Simply drop the ISO into FastZip, use Preview to browse the directory, and click the specific driver file to download it.