image-info-extractor v0.1.1
Image Info Extractor
A JavaScript lib to read image info and to extract/parse image metadata.
Warning This project is currently experimental.
Features
This lib supports most web image formats: JPEG, PNG, WebP, AVIF, SVG.
Image info reading
Image info reading support: width, height, alpha, bit depth, animation, lossless, rotation, mirror, progressive, grided
Note: the width and height are directly retrieved, you should also look at the rotation and mirror to render an image properly.
Metadata extracting
Metadata extracting support: EXIF, XMP, ICC
Additional extracting support: JFIF, Extended XMP, IPTC for JPEG, XMP in SVG
Table 1: raster image metadata extracting support (Y: yes, N: no)
| Image format \ Metadata format | EXIF | XMP | ICC |
|---|---|---|---|
| JPEG | Y | Y | Y |
| PNG | Y | Y | Y |
| WebP | Y | Y | Y |
| AVIF | Y | Y | Y |
Metadata parsing
Metadata parsing support: EXIF 2.32, XMP 1.0, ICC 4.4
Optional support:
- Vendor-specific XMP tag type mapping
TODOs:
- Vendor-specific EXIF MakerNote parsing
Data getters
- Thumbnail data in EXIF
- GPS info in EXIF
- Date tags in EXIF
Install
Browser Requirements
- Chromium 80
- Firefox 113
- Safari 16.4
Install with NPM
npm install image-info-extractorUsage
import {readFile, parseResult} from 'image-info-extractor';
// first, pick a file
// then pass the file to extractor
readFile(file).then(parseResult).then((result) => {
console.log('result', result);
});For detailed usage, see image-info-extractor and sidecar-file-viewer under examples/
Related Efforts
This project is derived, with heavy modifications, from
- https://github.com/titarenko/fast-exif
- https://github.com/devongovett/exif-reader
- https://github.com/lovell/icc
License
Copyright © 2023 Fuwei Chin and others