Image metadata and EXIF: what you need to know
Every photo you take carries more than just pixels. Embedded inside the file is a block of metadata — most commonly in a format called EXIF — that records details about how and where the image was created. Understanding this data matters for both privacy and file size.
What EXIF contains
EXIF metadata can include the camera or phone model, the lens, exposure settings like aperture and shutter speed, the date and time the photo was taken, and — critically — the GPS coordinates of the location, if location services were enabled. Some files also carry editing history, copyright fields, and thumbnail previews.
Why it matters for privacy
The location data is the most sensitive part. A photo posted online with intact EXIF can reveal exactly where it was taken — your home, a child's school, a regular running route. Most major social platforms strip this data automatically on upload, but many do not, and a file shared directly (by email, messaging, or on a personal website) usually keeps it. If you share photos, it is worth knowing whether the metadata is still attached.
Why it matters for file size
Metadata adds weight. An embedded thumbnail and full EXIF block can add tens of kilobytes to each image — negligible for one photo, but meaningful across a gallery of hundreds. Stripping metadata is a small but real optimization.
How to remove it
The simplest way to strip metadata is to re-encode the image. When you convert or compress an image through a tool that renders it to a canvas and exports a fresh file — as the tools on this site do — the new file is generated from the pixels alone, and the original EXIF block is left behind. The result is a cleaner, slightly smaller, more private file. This happens as a natural side effect of conversion, so simply running a photo through the converter or compressor here removes its metadata.
When you might want to keep it
Metadata is not always unwanted. Photographers rely on EXIF to review their settings, and date information helps organise archives. If you need to preserve metadata, keep an untouched original; use the stripped version only for public sharing. The right approach is to keep the data when it helps you and remove it when you publish.