How to open unknown files - without extension
There are times when we are not quiet sure which program could be used to open a file. Worst case scenario is when the file doesn’t have an extension. Here are some ways in which you can recognize/open such files.
Try the extension at an online file extension archive.
Use a Universal File viwer to open the file.
If everything else fails open the file with a HEX editor or using Notepad. Look for the first few charecters. These will be the filetype headers in most cases. Here is a small list of filetypes and header charecters for popular file types.
| MIME type | File Extension | Starting characters |
| image/ | PNG | ‰PNG |
| image/gif | GIF | GIF |
| image/jpeg | JPG | ÿØÿà |
| image/bmp | BMP | BM |
| imagge/tiff | TIF | II* |
| MID | MThd | |
| audio/mp3 | MP3 | ÿú |
| application/zip | ZIP | PK |
| application/rar | RAR | Rar! |
| MKV | .Eߣ | |
| DB | ÐÏ | |
| application/pdf |
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Tags: Answer, File, Tips, Windows
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Also, a lot of people don’t know about the hiding of extensions They can go to Control Panel -> Folder options -> View -> Deselect “Hide extensions for known file types-OFF”