GitHub - rsdoiel/mimetype-js: A mime type catalog for mapping file extensions to their mime type string.
GitHub - jsdom/whatwg-mimetype: Parses, serializes, and manipulates MIME types, according to the WHATWG MIME Sniffing Standard
![Detect file mime type using magic numbers and JavaScript | by Andreas Kihlberg | The everyday developer | Medium Detect file mime type using magic numbers and JavaScript | by Andreas Kihlberg | The everyday developer | Medium](https://miro.medium.com/max/978/1*14oL4nEoBxj7eDXnYIS6rQ.png)
Detect file mime type using magic numbers and JavaScript | by Andreas Kihlberg | The everyday developer | Medium
![Custom mime type validation using Angular, what am I doing wrong here, when this worked previously? - Stack Overflow Custom mime type validation using Angular, what am I doing wrong here, when this worked previously? - Stack Overflow](https://i.stack.imgur.com/i4Nm9.png)
Custom mime type validation using Angular, what am I doing wrong here, when this worked previously? - Stack Overflow
![Android install and No app associated with this mime type issue · Issue #23 · vinzscam/react-native-file-viewer · GitHub Android install and No app associated with this mime type issue · Issue #23 · vinzscam/react-native-file-viewer · GitHub](https://user-images.githubusercontent.com/28162527/47728811-518a1900-dc1c-11e8-8cdc-d6bfb8efffd2.png)