Every photo carries a hidden record of how it was made. An overlay makes that record visible on the image itself — useful for teaching, for portfolio transparency, for field documentation, and for any photo that will be read by someone who cannot open the file's properties.
What EXIF fields are worth showing
- DateTimeOriginal — the capture moment. The single most useful field.
- Make / Model — the camera or phone body.
- LensModel — often missing on phones, present on interchangeable-lens cameras.
- FocalLength, FNumber, ExposureTime, ISO — the exposure quartet, best shown as one line: 35mm f/1.8 1/250s ISO 200.
- GPSLatitude / GPSLongitude — where it was taken.
- GPSImgDirection — which way the camera pointed, shown as a compass bearing.
Building a readable data plate
Technical overlays work best as a monospace block on a translucent dark plate, aligned to one edge. Monospace keeps columns aligned across a set of photos; the plate guarantees contrast without dominating the frame. Two or three lines is the practical maximum — date on one line, exposure on the next, location on the third.
Doing it without uploading anything
EXIF can include a home address in coordinate form, so a metadata overlay tool that uploads your file is a poor trade. The labeler parses EXIF in the browser using JavaScript and draws the overlay on a canvas element; the image bytes never leave your machine.
When metadata is missing
Social platforms and messaging apps strip EXIF on export, and screenshots never had it. If the fields come back empty, that is the file, not the reader. Enter what you know manually — the date at minimum — and label from there.
Privacy before you publish
Showing coordinates is exactly as sensitive as it sounds. Do it for landscapes, job sites, and public landmarks; do not do it for photos taken at home, at a school, or anywhere a repeat visit could be predicted. A city name is often the right level of precision for a public post, with full coordinates reserved for internal records.
Do it now: open the free photo labeler, drop in your image, and drag the label where you want it. Everything runs in your browser — the photo is never uploaded.