CPIO Extractor

Open and extract CPIO archive files directly in your browser. Perfect for Linux initramfs images and Unix system archives.

Drop CPIO file here

.cpio files

CPIO contents will appear here

ISO Extractor - Open Disk Images Online …

GZ Extractor - Decompress Gzip Files Onl…

Z Extractor - Decompress Unix Compress F…

UDF Extractor - Extract DVD & Blu-ray Di…

ZIP File Extractor - Extract Specific Fi…

View all Archive extractors →

Frequently Asked Questions

CPIO (Copy In/Copy Out) is a Unix archive format used for file archiving. It's commonly found in Linux initramfs images, RPM packages, and system backups.

CPIO is used in Linux kernel initramfs/initrd images, Red Hat RPM packages (internally), macOS pkg installers, and Unix system backups. It preserves file permissions and ownership.

No. All extraction happens locally in your browser using WebAssembly. Your files never leave your device.

Binary, old ASCII (odc), new ASCII (newc), and CRC formats are supported. The tool auto-detects the format.

Yes. Linux initramfs images are typically CPIO archives, sometimes compressed with gzip. Decompress first if needed, then extract the CPIO.

RPM packages contain a CPIO archive inside. Use rpm2cpio to extract the CPIO portion, or our RPM extractor for direct extraction.

No hard limit, but large CPIO files may be slow due to browser memory constraints.

Yes. Browse the archive contents and click download on any file, or get everything as a ZIP.

File permissions are read and displayed but not enforced in browsers. They're restored when extracting on Unix systems.

After the first load, the extraction engine is cached and works offline.

Related Tools