EXIF Viewer (Photo Metadata)
Open a photo (JPEG or TIFF) and read the EXIF metadata the camera wrote into it: the make and model, the exposure time, aperture, ISO and focal length, the lens, the date the shot was taken, and any embedded GPS location shown as decimal coordinates with a link to view the spot on a map. A thumbnail preview sits alongside the data. Everything is parsed in your browser, so your photo — and the location it may reveal — never leaves your device.
Read locally in your browser — nothing is uploaded.
How to use the EXIF Viewer (Photo Metadata)
Choose a .jpg or .tif photo, or click Example to load a sample image carrying a full set of tags. The viewer locates the EXIF block inside the file and decodes it, then lays the values out in labelled groups — Camera (make, model, software, lens), Exposure (shutter speed, f-number, ISO, focal length, flash), Date (when the photo was taken and modified), Image (dimensions and orientation), and GPS when present — with a thumbnail of the photo shown beside them. Raw values are converted into the forms photographers expect: exposure as a fraction like 1/250 s, aperture as f/1.8, focal length in millimetres, and orientation as a readable label.
If the photo contains GPS tags, the viewer converts the stored degrees-minutes-seconds into decimal latitude and longitude and offers a link to view the location on a map — useful for confirming where a shot was taken, and equally useful as a reminder of what a photo can reveal. Because everything is decoded locally from the file you selected, that location data never leaves your browser. This makes the tool handy in two opposite directions: reading the technical details of your own photos, and checking what metadata is embedded in an image before you share it, so you know whether it carries your camera serial, the exact time, or your location.
What EXIF metadata is & why a viewer helps
EXIF — Exchangeable Image File Format — is the standard set of metadata that digital cameras and phones embed inside the photos they take. Every time you press the shutter, the device records not just the pixels but a block of structured data describing how the photo was taken: the camera make and model, the exposure time, aperture, ISO and focal length, whether the flash fired, the lens used, the orientation the camera was held in, and timestamps down to the second. Phones and many cameras also record GPS coordinates, writing the latitude, longitude and sometimes altitude of the spot where the photo was taken.
Technically, EXIF is stored using the structure of the TIFF file format. The metadata lives in a series of image file directories (IFDs), each a table of tagged entries where a numeric tag identifies the field and a type code says whether the value is a string, an integer, or a rational number (a pair of integers forming a fraction, used for things like exposure time). In a JPEG, this TIFF block is tucked into an application marker segment near the start of the file labelled Exif; in a TIFF image it is the file's native structure. A crucial detail is byte order: the block begins with either II (little-endian) or MM (big-endian) to say how its multi-byte numbers are arranged, and a reader must honour that to decode the values correctly. GPS data sits in its own sub-directory, with coordinates stored as three rationals (degrees, minutes, seconds) plus a reference letter for the hemisphere.
A browser-based viewer is useful for two reasons. First, it answers technical questions about your own images — what settings produced this shot, which lens, what time exactly — without opening a heavy photo application. Second, and increasingly important, it lets you see what you are about to share. Because EXIF can include your precise location and the exact moment a photo was taken, it is a genuine privacy consideration: a photo posted publicly can inadvertently reveal a home address or a daily pattern. Reading the metadata locally, with nothing uploaded, is the safe way to check what a file carries before it leaves your hands — and decoding it in the browser means the very location data you are worried about is never transmitted to a server.
Common use cases
- Check a photo before sharing. See whether an image carries your GPS location, camera serial, or exact timestamp before you post or send it.
- Read camera settings. Inspect the shutter speed, aperture, ISO, focal length and lens that produced a shot, to learn from it or document it.
- Confirm where a photo was taken. Convert embedded GPS tags to decimal coordinates and view the location on a map.
- Verify metadata privately. Audit a sensitive image locally in the browser rather than uploading it to an online EXIF service.