Open-The-File.com

Find how to open any file type

.CAR file extension

To open .CAR files on Windows, install and use IPFS Kubo (CLI) to import/export CAR data (see the Kubo CLI reference for CAR-related workflows).

To open a .car file, use IPFS/IPLD tools such as the IPFS Kubo CLI (for importing/exporting) or a CAR utility like ipfs-car (for packing/unpacking). On phones, there is usually no common native app support, so transfer the file to a desktop environment for inspection or conversion.

HomeExtension IndexData in indexData category page

Last updated: April 29, 2026 · Reviewed by Julian Stricker

Open on your device

Choose your operating system for a dedicated step-by-step opening guide.

How to open .CAR files

Use these platform-specific instructions to open .CAR files safely.

Windows

  1. Install and use IPFS Kubo (CLI) to import/export CAR data (see the Kubo CLI reference for CAR-related workflows).
  2. If you need to inspect or convert the archive, use the ipfs-car tool to unpack/list/pack CAR content from the command line.
Full Windows guide

Mac

  1. Install and use IPFS Kubo (CLI) to work with .car files via DAG import/export workflows described in the Kubo CLI docs.
  2. Use ipfs-car to pack/unpack CAR archives when you want to extract content or rebuild a CAR file.
Full Mac guide

Linux

  1. Use IPFS Kubo (CLI) for importing/exporting CAR archives as part of IPFS/IPLD data transfer workflows.
  2. Use ipfs-car to unpack or create CAR files from local data when you need a standalone CAR utility.
Full Linux guide

iOS

  1. There is no common iOS-native viewer for IPLD CAR archives; transfer the .car file to a desktop and open it using IPFS Kubo or ipfs-car.
Full iOS guide

Android

  1. There is no common Android-native viewer for IPLD CAR archives; transfer the .car file to a desktop and open it using IPFS Kubo or ipfs-car.
Full Android guide

Security notes

  • Treat .car files as untrusted input: they are parsed by complex codecs and block-processing code, so only use reputable tools and keep them updated.
  • A .car can encapsulate arbitrary content-addressed data; only render or execute extracted content (scripts, binaries, documents) after verifying it is what you expect.
  • Prefer workflows that validate content by CID when possible; content-addressed verification helps detect tampering, but it does not guarantee the content is safe to execute or view.

Recommended antivirus software

Scan files before opening them. These antivirus tools help protect against malware and viruses.

Avast

Avast offers free and premium antivirus software that protects against viruses, malware, ransomware, and phishing. Scan files before opening them to ensure safety.

Norton

Norton 360 delivers comprehensive antivirus protection, VPN, and identity theft monitoring. Scan files for threats before opening to keep your device secure.

We may earn a commission when you use affiliate links. This supports our free file extension guides.

Can't open this file?

These are the most common causes and fixes when .CAR files fail to open.

Common reasons

  • The .CAR file won’t open in a normal archive or media app
  • Import/export fails (file is malformed or incompatible)
  • You imported the CAR but can’t find the expected content

Fix steps

  1. Open it with IPFS/IPLD tooling (IPFS Kubo for import/export workflows, or ipfs-car for pack/unpack operations).
  2. If you expected regular files (e.g., a folder), use a CAR unpacking workflow (such as ipfs-car) rather than a generic archive utility.

OS-specific troubleshooting

What is a .CAR file?

A CAR file (Content Addressable aRchive) is a container format for IPLD/IPFS data that stores blocks addressed by content identifiers (CIDs). The IPLD CARv1 spec notes it is typically stored with the “.car” filename extension and defines the on-disk structure for interchange. CAR is commonly used to export, import, and move DAG data between systems and tools in the IPFS ecosystem.

Background

CAR (Content Addressable aRchives) is a transport/archive format defined by IPLD for moving content-addressed data (such as IPFS DAGs) between peers, tools, or storage systems. Instead of relying on file paths, CAR bundles blocks identified by CIDs, making it suitable for reproducible, verifiable transfers in content-addressed workflows.

In practice, CAR files often show up when exporting IPFS/IPLD data for backup, offline transfer, ingestion into another node, or interoperability between services. For example, IPFS Kubo provides CLI commands that can export DAG data to a CAR stream and import well-formed CAR files.

For developers, CAR is supported by tooling and libraries such as ipfs-car (CLI/library for packing and unpacking) and js-car (JavaScript reader/writer supporting CAR v1/v2). These are typically used to build pipelines that create CAR files from data or extract/verify their contents programmatically.

Common MIME types: application/vnd.ipld.car

Further reading

Authoritative resources for more details on the .CAR format.

Common .CAR issues

The .CAR file won’t open in a normal archive or media app

CAR is not a ZIP/RAR media container; it stores IPLD/IPFS blocks addressed by CIDs, so typical desktop viewers won’t recognize it.

  1. Open it with IPFS/IPLD tooling (IPFS Kubo for import/export workflows, or ipfs-car for pack/unpack operations).
  2. If you expected regular files (e.g., a folder), use a CAR unpacking workflow (such as ipfs-car) rather than a generic archive utility.

Import/export fails (file is malformed or incompatible)

Tools may reject CAR files that are not well-formed according to the CAR specification or are otherwise truncated/corrupted.

  1. Re-download or re-export the .car file to rule out truncation or partial transfers.
  2. Confirm the producing tool matches the CAR spec expectations (see the IPLD CAR spec hub and CARv1 specification) and use a compatible reader/writer implementation (e.g., Kubo, ipfs-car, or js-car).

You imported the CAR but can’t find the expected content

A CAR can contain multiple roots or a different root than you assumed; without the correct root CID, the data you want may not be obvious.

  1. Check the roots/entry points using CAR-capable tooling (e.g., a CAR reader/writer utility or library) and identify the correct CID root for the data you need.
  2. Repeat the export/import using the intended root CID when generating the CAR (per the IPFS Kubo DAG export/import workflow).

FAQ

What does .car mean here?

In this context, .car refers to IPLD Content Addressable aRchives (CAR), a format used in IPFS/IPLD to transport content-addressed blocks.

What is the official media type (MIME type) for CAR files?

The IANA-registered media type is application/vnd.ipld.car.

Can I open a .car file with 7-Zip/WinZip/Finder Archive Utility?

Usually no. CAR is not a general-purpose compressed archive; use IPFS Kubo workflows or CAR-specific utilities like ipfs-car.

Can I convert a .car to regular files?

You typically unpack or materialize the content using CAR tools (such as ipfs-car) or by importing into an IPFS/IPLD toolchain (such as Kubo) and then exporting the desired data.

Similar file extensions

Compare related formats in the same category to find the right tool faster.