Open ISO files in your browser
A whole CD, DVD or Blu-ray in one file, the way Windows, Linux and most software come. Open one right here, see every file and open the ones you need. Nothing leaves your device.
Or drop it anywhere on this page
What you'll see
Your disk opens like a folder, each volume's files listed on the left, with a map of its partitions and what the disk holds beside them.
- A map of the disk • Every partition to scale
- Every volume as a folder • Files open at once
- Verify • SHA-256, SHA-1 or MD5
- Export • Save as ZIP or Extract all
About ISO
An ISO is a copy of an optical disc, sector by sector: 2,048 bytes each, with the disc's file system on top. ISO 9660 came out in 1988 for CD-ROMs and still holds Linux and many software discs, with Joliet adding Windows' long names and Rock Ridge Unix's, along with permissions and links. DVDs, Blu-rays and Windows' own install ISOs use UDF, which keeps files of any size.
Most ISOs start a computer too. El Torito boot images make a disc boot on BIOS or UEFI, and Linux ISOs are hybrids, laid out to boot from a USB stick written with them as well. Windows keeps its editions in sources/install.wim or install.esd, and Linux names itself in .disk/info or .treeinfo.
Filepeek reads ISO 9660 and UDF with a reader of its own, so the files of a 6 GB ISO list in a moment and open at once, straight from the disc's sectors, with nothing unpacked. The disc's card says what it is, like Windows 11 • 24H2 or Ubuntu 24.04 LTS, with every edition a Windows ISO holds and whether it boots on BIOS, UEFI or both. Verify works out its SHA-256, SHA-1 or MD5 and checks it against the one its maker gives.
ISO disc image
.iso
Format
- MIME type
- application/x-iso9660-image
- Made by
- ISO and Ecma International
- Released
- 1988
Inside the file
- File systems
- ISO 9660, Joliet, Rock Ridge and UDF
- Sectors
- 2,048 bytes each
- Boot
- El Torito, for BIOS and UEFI
- Big files
- Over 4 GB on UDF, or in extents
Opens in every browser
No browser opens an ISO: they download it. Filepeek opens it as a folder in Chrome, Edge, Firefox and Safari.
- YouChromeOpens through Filepeek
- YouEdgeOpens through Filepeek
- YouFirefoxOpens through Filepeek
- YouSafariOpens through Filepeek
Questions
How do I open an ISO without mounting or burning it?
Drop it on this page or choose Peek an ISO. Its files are listed like a folder, and the one you pick opens right away, with nothing to install.
Can I check an ISO's SHA-256?
Yes. Choose Verify and Filepeek works out its SHA-256, SHA-1 or MD5 inside your browser. Paste the hash its maker gives, or drop its SHA256SUMS file, and it says whether they match. A Linux ISO's own list of MD5s checks every file on it.
Which editions are on a Windows ISO?
The disc's card lists every edition its install image holds, like Home, Pro and Education, with its build, languages and size, and each opens as a folder of its files.
Can I get files out of an ISO?
Yes. Open any file to see it, or choose Export to save the whole disc as a ZIP, or, in Chrome and Edge on a computer, Extract all into a folder.
Is my ISO uploaded?
No. It opens inside your browser and never leaves your device, however big it is.