mozilla-b2g/exif-parser

Name: exif-parser

Owner: Mozilla-B2G

Description: Amazing exif parser

Created: 2013-08-23 22:40:06.0

Updated: 2017-06-05 19:55:45.0

Pushed: 2016-01-25 21:00:26.0

Homepage: null

Size: 10662

Language: JavaScript

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README

exif-parser

It provides an API to read and write EXIF metadata from jpeg images.

Try it

• Demo.

Use it

Download the library and include it in your html.

ipt src="js/jpeg.js"></script>

The following code loads a file, reads the exif metadata, modifies the rotation tag and creates a new blob with the new metadata.

ipt>

r readExif = function(fileBlob) {
JPEG.readExifMetaData(fileBlob, function(error, metaData) {
  console.log(JSON.stringify(metaData))
});


r writeExif = function(fileBlob) {
JPEG.writeExifMetaData(
  fileBlob,
  {"Orientation" : 1},
  function(error, modifiedBlob) {
    // Process modified file
  });


r processImage = function() {
var request = new XMLHttpRequest();
request.open("GET", "/exif-parser/examples/images/sample.jpg", true);
request.responseType = "arraybuffer";
request.onload = function (event) {
  var arrayBuffer = request.response; // Note: not request.responseText
  var blob = new Blob([arrayBuffer],{type: "image/jpeg"});
  readExif(blob);
  writeExif(blob);
};
request.send(null);


ocessImage();

ript>

Test it

• Tests.