# Exif.js A JavaScript library for reading [EXIF meta data](https://en.wikipedia.org/wiki/Exchangeable_image_file_format) from image files. You can use it on images in the browser, either from an image or a file input element. Both EXIF and IPTC metadata are retrieved. This package can also be used in AMD or CommonJS environments. **Note**: The EXIF standard applies only to `.jpg` and `.tiff` images. EXIF logic in this package is based on the EXIF standard v2.2 ([JEITA CP-3451, included in this repo](/spec/Exif2-2.pdf)). ## Install Install `exif-js` through [NPM](https://www.npmjs.com/#getting-started): npm install exif-js --save Or [Bower](http://bower.io/): bower install exif-js --save Then add a `script` tag in your an HTML in the [best position](http://stackoverflow.com/questions/436411/where-is-the-best-place-to-put-script-tags-in-html-markup) referencing your local file. **Note**: This repo has no `.min.js`. Do your own [minification](https://en.wikipedia.org/wiki/Minification_(programming)) if you want that. If you prefer another package manager you will probably manage :D. Or you can clone this GIT repository or download it's ZIP file and extract `exif.js` to your project. ## Usage The package adds a global `EXIF` variable (or AMD or CommonJS equivalent). Start with calling the `EXIF.getData` function. You pass it an image as a parameter: - either an image from a `

` - OR a user selected image in a `` element on your page. As a second parameter you specify a callback function. In the callback function you should use `this` to access the image with the aforementioned metadata you can then use as you want. That image now has an extra `exifdata` property which is a Javascript object with the EXIF metadata. You can access it's properties to get data like the *image caption*, the *date a photo was taken* or it's *orientation*. You can get all tages with `EXIF.getTag`. Or get a single tag with `EXIF.getTag`, where you specify the tag as the second parameter. The tag names to use are listed in `EXIF.Tags` in `exif.js`. **Important**: Note that you have to wait for the image to be completely loaded, before calling `getData` or any other function. It will silently fail otherwise. You can implement this wait, by running your exif-extracting logic on the `window.onLoad` function. Or on an image's own `onLoad` function. For jQuery users please note that you can NOT (reliably) use jQuery's `ready` event for this. Because it fires before images are loaded. You could use $(window).load() instead of $(document.ready() (please note that `exif-js has NO dependency on jQuery or any other external library). **JavaScript**: ```javascript window.onload=getExif; function getExif() { var img1 = document.getElementById("img1"); EXIF.getData(img1, function() { var make = EXIF.getTag(this, "Make"); var model = EXIF.getTag(this, "Model"); var makeAndModel = document.getElementById("makeAndModel"); makeAndModel.innerHTML = `${make} ${model}`; }); var img2 = document.getElementById("img2"); EXIF.getData(img2, function() { var allMetaData = EXIF.getAllTags(this); var allMetaDataSpan = document.getElementById("allMetaDataSpan"); allMetaDataSpan.innerHTML = JSON.stringify(allMetaData, null, "\t"); }); } ``` **HTML**: ```html

Make and model: 






```

Note there are also alternate tags, such the `EXIF.TiffTags`. See the source code for the full definition and use.
You can also get back a string with all the EXIF information in the image pretty printed by using `EXIF.pretty`.
Check the included [index.html](/exif-js/exif-js/blob/master/index.html).

Please refer to the [source code](exif.js) for more advanced usages such as getting image data from a [File/Blob](https://developer.mozilla.org/en/docs/Web/API/Blob) object (`EXIF.readFromBinaryFile`).

## Contributions
This is an [open source project](LICENSE.md). Please contribute by forking this repo and issueing a pull request. The project has had notable contributions already, like reading ITPC data.

You can also contribute by [filing bugs or new features please issue](/exif-js/issues).
Or improve the documentation. Please update this README when you do a pull request of proposed changes in base functionality.

	Stars	Issues	Version	Updated	Created
exif-js	4,739	180	2.3.0	7 years ago	10 years ago
exif-parser	212	14	0.1.12	7 years ago	11 years ago
exif-reader	143	3	2.0.1	3 months ago	9 years ago
exiftool	80	14	0.0.3	10 years ago	10 years ago
piexifjs	548	21	1.0.6	5 years ago	9 years ago

exif-js vs exif-parser vs exif-reader vs exiftool vs piexifjs

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