asar7z x app.asar -o ./output_folder

"asar7z" is great for inspecting code, but modifying it requires bypassing these security mechanisms, which is a topic for a much more advanced post.

: 7z is a compressed archive file format that is used with the 7-Zip archiver. The 7z format provides high compression ratios and supports a wide range of compression methods. It's widely used for compressing and archiving files.

is a specialized third-party plugin for the 7-Zip archiver that enables support for Electron's ASAR (Atom Shell Archive) format. It allows users to browse, extract, modify, and create .asar files directly within the standard 7-Zip interface. Quick Facts Developer: TC4Shell

Asar7z is optimized for speed. It can unpack large ASAR files (hundreds of megabytes) significantly faster than the Node.js equivalent by using native threading and efficient I/O operations.

Since it is a plugin and not a standalone app, you must manually place it in the 7-Zip directory.

Extract the plugin archive and copy Asar.64.dll (for 64-bit systems) or Asar.32.dll (for 32-bit) into that Formats folder.

Open your 7-Zip installation folder (usually C:\Program Files\7-Zip ).

In the early days of Electron, applications consisted of thousands of tiny JavaScript, HTML, and CSS files. When a user launched the app, the operating system had to read thousands of individual inodes from the disk. This caused significant IO overhead and slowed down app startup times.

Get the distribution package from the official TC4Shell website.

: ASAR (Atom Software Archives) is a file archiving format developed by GitHub. It's used for distributing and storing files, similar to ZIP or TAR, but it's specifically designed to work seamlessly with GitHub's Electron framework for building cross-platform desktop applications. ASAR archives are used to package applications and their dependencies.