exifreader2.8.2 • Public • Published
ExifReader supports module formats AMD, CommonJS and globals and can therefore easily be used from Webpack, RequireJS, Browserify, Node etc. Since it is written using ES2015, you can also import the ES2015 module directly from your own ES2015 project.
Easiest is through npm or Bower:
npm install exifreader --save
bower install exifreader --save
If you want to clone the git repository instead:
git clone email@example.com:mattiasw/ExifReader.gitcd ExifReadernpm install
After that, the transpiled, concatenated and minified ES5 file will be in the
dist folder together with a sourcemap file.
Type definitions for TypeScript are included in the package.
const ExifReader = ;
const tags = ExifReader;const imageDate = tags'DateTimeOriginal'description;const unprocessedTagValue = tags'DateTimeOriginal'value;
By default, Exif, IPTC and XMP tags are grouped together. This means that if
Orientation exists in both Exif and XMP, the first value (Exif) will be
overwritten by the second (XMP). If you need to separate between these values,
pass in an options object with the property
expanded set to
const tags = ExifReader;
Some XMP tags have processed values as descriptions. That means that e.g. an
Orientation value of
3 will have
Rotate 180 in the
If you would like more XMP tags to have a processed description, please file an
issue or do a pull request.
Some text tags use TextDecoder to decode their content. If your specific environment does not support it at all or a specific encoding, you will not be able to see the decoded value. One example is when Node.js wasn't compiled with support for the specific encoding.
The library makes use of the DataView API which is supported in Chrome 9+, Firefox 15+, Internet Explorer 10+, Edge, Safari 5.1+, Opera 12.1+. If you want to support a browser that doesn't have DataView support, you should probably use a polyfill like jDataView.
Node.js has had support for DataView since version 0.12 but ExifReader will also try to polyfill it for versions before that (this is not well tested though).
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 examples/nodejs/ directory.
- After parsing the tags, consider deleting the MakerNote tag if you know you will load a lot of files and storing the tags. It can be really large for some manufacturers. See the examples folder to see how you can do that.
- The descriptions for UserComment, GPSProcessingMethod and GPSAreaInformation are missing for other encodings than ASCII.
ExifReader uses the Mozilla Public License 2.0 (MPL-2.0). In short that means you can use this library in your project (open- or closed-source) as long as you mention the use of ExifReader and make any changes to ExifReader code available if you would to distribute your project. But please read the full license text to make sure your specific case is covered.
- January 2019:
- For Node.js, remove dependency of jDataView and explicit dependency of XMLDOM.
- Add type definitions for TypeScript.
- February, 2018:
- Change license to Mozilla Public License 2.0 (MPL-2.0).
- December, 2017:
- Add option to separate different tag groups (Exif, IPTC and XMP).
- February, 2017:
- Add support for XMP tags.
- December, 2016:
- Merge IPTC branch.
- Remove need to instatiate the ExifReader object before use.
- Add UMD support (CommonJS, AMD and global).
- Publish as npm package.
- 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.