buffer-type

Detect content-type from Buffer data.

Install

$ npm install buffer-type

Usage

const bt = require('buffer-type');
const fs = require('fs');

const info = bt(fs.readFileSync(__dirname + '/logo.png'));
console.log(info);
// {
//   type: 'image/png',
//    extension: '.png',
//    width: 618,
//    height: 96,
//    bit: 8, // bit depth
//    color: 6,
//    compression: 0,
//    filter: 0,
//    interlace: 0
// }

References

• http://www.onicos.com/staff/iz/formats/
• http://www.fastgraph.com/help/image_file_header_formats.html
• http://en.wikipedia.org/wiki/Portable_Network_Graphics
• http://en.wikipedia.org/wiki/Image_file_format

TODO

• Image
  • [√] .png
  • [√] .jpg
  • [√] .bmp
  • [√] .gif
  • [√] .webp
  • [ ] .svg
  • [ ] .tif
  • [ ] .psd
• Tar
  • [ ] .tar
  • [ ] .gzip
  • [ ] .zip
  • [ ] .rar
• PE file
  • [ ] .exe
  • [ ] .msi
  • [ ] .apk
  • [ ] .ipa
• Text
  • [ ] .xml
  • [ ] .html
  • [ ] .json
• Media
  • [ ] .mp3
  • [ ] .mp4
  • [ ] .avi

License

MIT

1.0.0 / 2018-06-28

others

• [e07ae1b] - * feat: support Exif - Exchange Image File Format image (fengmk2 <fengmk2@gmail.com>)

0.0.2 / 2014-05-04

• add webp detect

0.0.1 / 2013-08-13

• add bmp detect
• add jpeg detect
• add png image detect
• add gif image detect
• first commit