mozlz4

Decompress Mozilla Firefox bookmarks backup file.

Node module

Installation

To install as a local module and include as a dependency:

npm install --save mozlz4

Usage

const fs = require('fs');
const jsonlz4 = require('mozlz4');

// Read file into buffer
fs.readFile('/path/to/bookmarkbackups/recovery.jsonlz4', function(err, fileBuffer) {
  // decompress file buffer to JSON
  decompressedJson = jsonlz4.decompress(fileBuffer);

  // do something with the JSON
  console.log(decompressedJson);
});

Commandline

Installation

To install as a command line application:

npm install mozlz4

You may need to prefix the command with sudo.

Usage

  Usage: mozlz4 [options] <file>

  Decompress a Firefox bookmark backup jsonlz4 file to JSON.

  Options:

    -h, --help    output usage information
    -p, --pretty  Pretty print JSON

Output is sent to stdout

Notes

bytes 0-7: Magic number when converted to a string mozLz40 followed by a null character. bytes 8-11: Uncompressed file size. Little endian unsigned 32bit integer. bytes 12-EOL: LZ4 compressed blocked.