Create an ISO from files or a folder
Drop a folder or some files and get an .iso disc image that mounts on Windows, macOS and Linux. Long and Unicode file names are kept, and nothing is uploaded.
How to create an ISO file online
- Drop a folder onto the box above, or click Add a folder. You can also drop or choose loose files, and add more before building.
- Type a disc label if you want one; it becomes the drive name when the image is mounted.
- Click Create ISO and save the
.isofile.
Opens everywhere
The image is a standard ISO 9660 disc image with Joliet extensions, the combination Windows, macOS and Linux all mount with a double-click, and that 7-Zip, PeaZip and other archive tools open. File and folder names keep their spaces, accents and non-Latin letters. The output was tested with three independent readers: 7-Zip, libarchive and the macOS disk-image mounter.
Instant, for any size
Your files are not copied into memory or uploaded. The tool writes the disc directory and file tables, and the browser stitches them together with the files straight from your disk as the ISO is saved. A 20 GB folder takes as long as a 20 MB one to build; saving it takes as long as your disk needs to copy it.
Limits worth knowing
- Data images only. The ISO is not bootable, so it is not suitable for making an operating-system installer.
- Files must be under 4 GB each. That is a limit of the ISO 9660 format. For larger files, use a 7z or ZIP archive instead.
- Names longer than 64 characters are shortened, keeping the extension, because Joliet stores at most 64 characters per name. The tool tells you when that happens.
- File dates are kept; Unix permissions and macOS extended attributes are not.
- Empty folders are kept when you drag a folder onto the page. The Add a folder button cannot see them, because browsers only report folders that contain files.