var exif = new ExifReader(); exif.load(fileBuffer); var imageDate = exif.getTagDescription('DateTimeOriginal'); var allTags = exif.getAllTags();
The easiest way is to use Bower:
bower install exifreader
The library makes use of the DataView API which is supported in Chrome 9+, Firefox 15+ and Internet Explorer 10+. If you want to support a browser or Node.js that doesn't have DataView support, you should probably use a wrapper like jDataView by Christopher Chedeau.
A full HTML example page is located in the examples/html/ directory. The example uses the FileReader API which is supported by the latest versions of all the major browsers.
Also, there is a Node.js example in the example/node/ directory that uses a simple wrapper for the DataView API.
- Only load part of the image file since the Exif info segment has a max size. I suggest 128 kB. See the examples folder for a way to do this.
- After parsing the tags, consider deleting the MakerNote tag if you know you will have a lot of ExifReader instances. It can be really large for some manufacturers. See the examples folder to see how you can do that.
Testing is done with jasmine-node. Use either the Cakefile or jasmine-node directly:
jasmine-node --coffee spec/
- The descriptions for UserComment, GPSProcessingMethod and GPSAreaInformation are missing for other encodings than ASCII.
- September 17, 2014:
- Lower memory usage by unsetting the file data object after parsing.
- Add deleteTag method to be able to delete tags that use a lot of memory, e.g. MakerNote.
- September 9, 2013:
- Make parsing of APP markers more robust. Fixes problems with some pictures.
- July 13, 2013:
- Throw Error instead of just strings.
- April 23, 2013:
- Support hybrid JFIF-EXIF image files.
- April 22, 2013:
- Registered with Bower.
- January 8, 2013:
- Updated text about browser support.
- January 19, 2012:
- Added text descriptions for the tags.
- January 1, 2012:
- First release.