Is my ISO file uploaded anywhere?

No — extraction runs entirely inside your browser using a real 7-Zip build compiled to WebAssembly.

Will a multi-gigabyte ISO work?

It can, but large disc images use significant browser memory and take real time proportional to the file's size — very large ISOs may be slow or memory-constrained depending on your device.

Do I need to mount the ISO first?

No — this reads the disc image's file structure directly, without needing to mount it as a virtual drive.

Does this preserve the disc's original folder structure?

Yes — extracted files keep their original paths from the disc image, bundled together in the resulting ZIP.

Can this extract a bootable OS installer ISO?

Yes — it reads the standard ISO 9660 file system regardless of whether the disc is also bootable; boot sector data itself isn't something you'd need extracted as a regular file.

Open ISO Image — Free Online Tool

Features

Runs entirely in your browser
Privacy-first — your data is never uploaded
Real-time, instant results
100% free, no sign-up required
Works on desktop, tablet, and mobile
No installation needed

Who uses this tool?

IT adminsDevelopersOffice workersStudents

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About Open an ISO Image

ISO files are exact copies of a CD/DVD disc's contents, commonly used for software distribution and operating system installers, but browsers and many everyday tools have no built-in way to open one without mounting it as a virtual drive. This tool reads an ISO 9660 disc image and extracts its files entirely in your browser using a real 7-Zip build compiled to WebAssembly.

Every file inside the disc image is listed with its size once extraction completes, and everything bundles together into a single ZIP for download — no need to mount the ISO as a virtual drive just to grab its contents.

ISO files are often large — several hundred megabytes to multiple gigabytes for a full disc image — so extraction can use significant browser memory and take real time proportional to the disc image's size.

Everything runs locally: the disc image is read and extracted entirely inside your browser's WebAssembly sandbox, with nothing uploaded to a server at any point.

How it works

Upload your ISO file. Its contents are extracted automatically.
Review the file list. See every extracted file's name and size (may take a moment on large ISOs).
Download all as ZIP. Every extracted file bundled into one download.

Examples

Extracting files from an installer disc image

Input

installer.iso

Output

every contained file, downloadable as a ZIP

Open an ISO Image

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About Open an ISO Image

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Examples

Frequently asked questions