#EDIT EXIF METADATA HOW TO#
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Piexifjs is available as a Node.js package and can be installed by using npm as shown below: npm install piexifjs Unlike most other JavaScript Exif libraries, Piexif not only allows you to read Exif data, but edit and erase it as well. There are a number of JavaScript libraries that can access the Exif data in digital photos. Before continuing, you should download these images from this article’s companion Github repository and put them into a directory named images. In the exercises below, you’ll use images containing Exif metadata. Along the way, you’ll use not just your programming skills, but you’ll do some detective work as well! This article will answer these questions with the help of JavaScript and the Piexifjs library. How can I alter, add, or erase Exif metadata programmatically?.How can I programmatically detect and read the Exif metadata in photos?.Combined with the site’s poor security, these recordings provided law enforcement with evidence that clearly placed the people who made them at the scene of the crime.īeing the security-conscious developers that I suspect you are, you’re probably asking yourself questions like these: Many of the participants posted photos and videos to a social media site that didn’t take the precaution of “scrubbing” their Exif data during the upload process.

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The January 6th storming of the United States Capitol is full of examples of incriminating Exif.

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In his DEF CON 23 presentation, Confessions of a Professional Cyber Stalker, security analyst Ken Westin talked about the privacy problems that Exif can cause. The 2012 privacy incident involving antivirus company founder John McAfee is a popular one. Information security professionals tell cautionary tales about Exif metadata. However, it also introduces privacy and security concerns that many users don’t take into account. This metadata is useful for sorting, cataloging, and searching through photos, which is why the Exif standard was defined.

Various camera settings, including zoom, aperture, and flash.

The speed at which the camera was moving when the photo was taken.

The altitude at which the photo was taken.

The orientation of the device when the photo was taken.

Where the photo was taken, with the accuracy of GPS.

The date and time when the photo was taken, down to the millisecond.

The make and model of the device used to take the photo.

In photos, Exif can include information such as: This metadata is stored in a format called Exif, which is short for Exchangeable image file format, a continually evolving standard for information added to digital image and sound recordings. In addition to picture data, photos taken with smartphones and modern digital cameras contain metadata, which is additional information about the photo.

By default, the photos taken with these cameras can give away sensitive information, and many users are unaware that it’s happening.

More people than ever have a camera that’s usually within arm’s reach.The mass adoption of smartphones - essentially portable, sensor-rich, location-aware, always-networked computers - has given us two major consequences whose effects on privacy and security we don’t yet completely understand: There's More Than Just Pictures in Your Photos

#EDIT EXIF METADATA HOW TO#

In this article, you’ll learn about the Exif metadata format and how to use JavaScript and the Piexfjs library to find and read this data, edit it, and even erase it from your photos. They also contain Exif metadata, which provides additional information about each photo, such as when and where it was taken, as well as other data that could be used to compromise your privacy or even incriminate you. TL DR: The photos you take on your smartphone are made up of more than just pictures.

Edit exif metadata