[Feature Request] Broken Files - Add option to rename files with incorrect file extension

[dnutan]

I think it would be a nice feature to be able to correct the file extension on those Broken Files where the file extension does not match the file header signature / magic number (not 100% accurate due to some file formats using container formats). This could work for images, .CHK files, etc. either applying a suggested file extension to all selected files or with a custom file extension (on GUI an extra editable column with suggested extension).

About File Signatures

• https://en.wikipedia.org/wiki/List_of_file_signatures
• https://www.garykessler.net/library/file_sigs.html
• https://www.nationalarchives.gov.uk/PRONOM/Default.aspx
• https://filesignatures.net/index.php?page=all (webpage with unsecure certificate warning)

Some programs that can detect file signatures

• TrID

• file command (based on libmagic library) (GNU/Linux)

• exiftool (for images, can also extract metadata useful to rename filename by date or other fields)

• DROID

• Windows PowerShell (Get-FileMetaData -Signature)

• File Carving and File Recovery software

• https://tika.apache.org/2.3.0/detection.html

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Feature Request slightly related to #309

[qarmin]

Most tools are written in C/C++ and similar, so integration can be problematic.

From Rust side, probably something like https://crates.io/crates/mime_guess can be used

[dnutan]

For Rust, maybe something like mime2ext, infer (or tree_magic or tree_magic_mini) would help doing the job. Regards.