@11ways/exiv2
v0.7.2
Published
A native c++ extension for node.js that provides support for reading & writing image metadata via Exiv2.
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#Exiv2
Exiv2 is a native c++ extension for node.js that provides support for reading and writing image metadata via the Exiv2 library.
Dependencies
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.
Debian
apt-get install libexiv2 libexiv2-dev
OS X
You'll also need to install pkg-config to help locate the library and headers.
port install pkgconfig exiv2
brew install pkg-config exiv2
Other systems
See the Exiv2 download page for more information.
Installation Instructions
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
Sample Usage
Read tags:
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"]);
});
Load preview images:
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);
});
Write tags:
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.log(err);
} else {
console.log("setImageTags complete..");
}
});
Take a look at the examples/
and test/
directories for more.
email: dberesford at gmail twitter: @dberesford