How to Decode a Base64 Encoded Bookmark

Log4TurtleShell ozpbi123 

The state of bookmarks is gzipped, so after you decoded it from base64 you need to decompress it:

static class Program
{
    public static void Main()
    {
        // Replace with your actual Base64-encoded and gzipped string
        string encodedAndGzippedString = "";

        // Decode the Base64 string
        byte[] decodedBytes = Convert.FromBase64String(encodedAndGzippedString);

        // Decompress the gzipped data
        string decompressedString = DecompressGzip(decodedBytes);

        Console.WriteLine("Decompressed data:");
        Console.WriteLine(decompressedString);
    }

    public static string DecompressGzip(byte[] compressedData)
    {
        using (var memoryStream = new MemoryStream(compressedData))
        using (var gzipStream = new GZipStream(memoryStream, CompressionMode.Decompress))
        using (var reader = new StreamReader(gzipStream, Encoding.UTF8))
        {
            return reader.ReadToEnd();
        }
    }

}

Hi Log4TurtleShell ,

Please review the following links, hope they can help you.

Base64 encoding and decoding in client-side Javascript

How do I decode a Base64 encoded string in JavaScript?

console.log(atob('TXkgU3RyaW5nIFRvIEVuY29kZQ=='));

Base64 Decode a Value in Node.js

const plain = Buffer.from('dXNlcm5hbWU6cGFzc3dvcmQ=', 'base64').toString('utf8')  

Best Regards