EXIF is the data a camera or phone writes into each photo: the camera and lens, shutter speed, aperture, ISO, the date and time it was taken and, on most phones, the GPS position. Editing apps add XMP data, and news and stock photos often carry IPTC captions and copyright. This viewer reads all of it and lays it out in plain groups: camera, exposure, date and time, location and image details.
When a photo has a GPS position, you get the coordinates in decimal and degrees-minutes-seconds, the altitude and direction where recorded, and a link that opens the spot in OpenStreetMap. Below the summary, every tag is listed by block (EXIF, GPS, XMP, IPTC, ICC colour profile and more). You can copy the whole result as JSON or download it as a file.
Limits: it reads one photo at a time. It supports JPG, HEIC and HEIF, PNG, TIFF, WebP and AVIF; RAW camera files and videos are not supported. Camera maker notes (private manufacturer data) are not decoded. If a photo shows no data, it was most likely removed by an app or website before it reached you; the viewer can't recover it.