Most websites clean photos of EXIF data while uploading the photo - this is done for many reasons, some un-intentional but
- Privacy and Security: EXIF data can contain sensitive information, such as the location where the photo was taken (GPS coordinates), the date and time it was captured, and details about the camera used. Websites may strip this data to protect the privacy and security of their users.
- Reducing File Size: EXIF data can increase the size of an image file. Removing it helps to reduce the file size, which is particularly important for web use, as it decreases loading times and saves bandwidth.
- Uniformity and Processing: When users upload photos, websites often process these images to conform to certain standards or formats. This processing can include resizing, cropping, and compressing, which can strip out EXIF data.
- Simplification and Compatibility: Removing EXIF data can simplify image handling and ensure compatibility across different platforms and devices. Some websites or applications might not support all types of EXIF data, so removing it can help avoid compatibility issues.
- User Preferences and Control: Some users prefer not to share certain details included in EXIF data. Websites may provide an option to remove this data during the upload process, either as a default setting or as a choice for the user.
Exif data is generally removed when uploading GLOB data for example automatically, its just what happens to the image, its not like the website chose to do this. In other sites Exif data is purposely removed for user security should their upload system somehow not strip it automatically. Modules like FFMPEG strip it automatically, this is the most common used image handler online.