The bsondump debug output is too terse for detailed inspection of BSON files. It could use more info about the field types and values and maybe some ability to see the raw binary.

For example, here's the bsondump output for a sample BSON document:

❯ bsondump --type=debug test.bson            
--- new object ---
        size : 40
                myString
                        type:    2 size: 20
                myInt
                        type:   18 size: 15

For comparison, the fq tool supports decoding BSON and outputs more detailed information with color: