#Exiv2
Exiv2 is a native c++ extension for io.js and node.js that provides support for reading and writing image metadata via the Exiv2 library.
To build this addon you'll need the Exiv2 library and headers so if you're using a package manager you might need to install an additional "-dev" packages.
apt-get install libexiv2 libexiv2-dev
You'll also need to install pkg-config to help locate the library and headers.
port install pkgconfig exiv2
brew install pkg-config exiv2
See the Exiv2 download page for more information.
Once the dependencies are in place, you can build and install the module using npm:
npm install exiv2
You can verify that everything is installed and operating correctly by running the tests:
npm test
var ex = require('exiv2');
ex.getImageTags('./photo.jpg', function(err, tags) {
console.log("DateTime: " + tags["Exif.Image.DateTime"]);
console.log("DateTimeOriginal: " + tags["Exif.Photo.DateTimeOriginal"]);
});
var ex = require('exiv2')
, fs = require('fs');
ex.getImagePreviews('./photo.jpg', function(err, previews) {
// Display information about the previews.
console.log(previews);
// Or you can save them--though you'll probably want to check the MIME
// type before picking an extension.
fs.writeFile('preview.jpg', previews[0].data);
});
var ex = require('exiv2')
var newTags = {
"Exif.Photo.UserComment" : "Some Comment..",
"Exif.Canon.OwnerName" : "My Camera"
};
ex.setImageTags('./photo.jpg', newTags, function(err){
if (err) {
console.error(err);
} else {
console.log("setImageTags complete..");
}
});
var ex = require('exiv2')
var tagsToDelete = ["Exif.Photo.UserComment", "Exif.Canon.OwnerName"];
ex.deleteImageTags('./photo.jpg', tagsToDelete, function(err){
if (err) {
console.error(err);
} else {
console.log("deleteImageTags complete..");
}
});
Take a look at the examples/ and test/ directories for more.
email: dberesford at gmail twitter: @dberesford
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