You can filter which .chk files to process. If you are only looking for lost family photos, you can configure CHK-Mate to ignore all text and executable files, processing only image signatures.
While many freeware tools only recognize 10-15 file types (mostly JPG and DOC), modern versions of CHK-Mate support over 200 distinct file signatures, including RAW camera images (CR2, NEF), database files (MDB, ACCDB), virtual machine disks (VMDK), and even Source code files (C++, PY, JAVA). CHK-Mate
Before committing to a restore, CHK-Mate includes a hex viewer and a visual preview pane. You can see the raw binary or, for image files, an actual thumbnail of the recovered photo. You can filter which