EXIF for image information
What is EXIF?
EXIF means "Exchangeable Image File Format" and is based on TIFF and JPEG as the standard image format. Technical image information such as shooting details or camera settings are stored in the headers of the image files. RAW images cannot store EXIF data.
When taking TIFF or JPEG images, EXIF data is added automatically. EXIF data such as date and time, white balance, aperture, focal length or exposure time are now added by every modern smartphone. A total of over 100 standardised EXIF tags can be added to an image.
Reading EXIF data
EXIF data is read out via internet browser, with a special programme or with photo tools. However, this is only possible with TIFF or JPEG formats. EXIF information cannot be saved from uncompressed photographs.
How to display, read and change EXIF data
In Mozilla Firefox and Google Chrome, the desired metadata can be displayed with add-ons such as Exify or ExifViewer. By software, EXIF information can also be read out with image editing programmes. In principle, EXIF data can be changed with all programmes that can read it. You can change file names for easier archiving or correct dates and times due to incorrect camera settings. However, other EXIF information can also be changed if it is important for later use of the images.
Deleting EXIF data
The easiest way to delete EXIF information is in the respective image property. It is recommended that you do not delete the information in the original image. Instead, you should create copies of the image without metadata. In case of doubt, you will then still have all the necessary information at hand, as it is not possible to restore it. However, valuable EXIF information can be lost if an image is saved but then saved incorrectly.
