What Is EXIF Data? The Hidden Information Inside Every Photo

Every photo you take is two things at once: an image, and a small database describing how that image came to exist. That second part is EXIF — and most people have no idea it is there, or that it frequently includes the exact spot where they were standing.

This guide covers what EXIF actually stores, which file formats carry it, how to read it on any device, and when it survives being shared. If you only want to know whether a photo can reveal where it was taken, start here instead.

The standard has been revised repeatedly since the 1990s. Exif 3.0, published in 2023, added UTF-8 support so tags can hold non-Latin text — a long-standing limitation that mangled anything written in Turkish, Japanese or Arabic. It was revised as DC-008-2024 and superseded by Exif 3.1 (CIPA DC-008-2026) in January 2026.

It is worth being precise about one thing: EXIF is not a file type, and it is not the only metadata a photo carries — EXIF, IPTC and XMP are three separate blocks that can coexist in one file. It is a block of tagged data embedded inside a file — usually a JPEG or HEIC — that image software knows to look for and ordinary viewers simply skip past.

The GPS tags are the ones with consequences. When your phone geotags a photo it writes latitude and longitude as degrees, minutes and seconds — how to read those coordinates covers the conversion — plus an altitude and a separate GPS timestamp. Outdoors that is precise enough to identify a specific building. Indoors it is not — the conditions that put you in a room are the ones that degrade a GPS fix.

• JPEG — EXIF lives in an APP1 marker segment near the start of the file, capped at roughly 64 KB.
• HEIC / HEIF — the default on modern iPhones; carries the same tag set in a different container.
• RAW (CR3, NEF, ARW, DNG) — the richest metadata of all, since RAW files are built around it.
• PNG — can hold EXIF in an eXIf chunk, added to the spec in 2017, but many tools neither write nor read it.
• WebP — supports an optional EXIF chunk; converters frequently drop it.
• BMP, GIF — no EXIF support whatsoever.

This is why converting a photo can quietly erase its history: exporting a geotagged HEIC to PNG in the wrong tool discards the GPS tags entirely. Convenient if privacy is the goal, destructive if you were relying on that data.

1. Step 1iPhone and iPadOpen the photo in Photos, then swipe up (or tap the ⓘ button). Camera and exposure details appear, with a map beneath if the photo is geotagged.
2. Step 2AndroidIn Google Photos, open the image and tap the ⓘ icon or swipe up. Manufacturers vary in how much they surface; a dedicated metadata viewer shows the full tag list.
3. Step 3WindowsRight-click the file, choose Properties, then the Details tab. Scroll to GPS at the bottom. The same dialog can strip fields, which is covered below.
4. Step 4macOSOpen in Preview, then Tools → Show Inspector (or ⌘I) and select the EXIF and GPS tabs.
5. Step 5Anything, exhaustivelyThe reference tool is exiftool, a free command-line utility that reads far more tags than any built-in viewer — including maker-specific fields the operating system hides. On a phone, the iPhone walkthrough explains what each line in the built-in panel means.

This is the distinction that catches people out. Posting to a social feed generally sheds EXIF; sending the same file to someone as an attachment generally does not. Platform behaviour also changes without announcement, so treat any specific claim — including this one — as something to verify rather than assume.

That second route — reading the image itself rather than its tags — is what AI geolocation tools do, and it is why removing EXIF is a privacy step rather than a privacy guarantee.

• Strip it when posting anywhere public under a name you would rather not tie to an address — the privacy risks are cumulative rather than per-photo.
• Strip it from photos of children, and from anything showing a home or school.
• Keep it in your own archive — losing capture dates is irreversible and quietly ruins a photo library.
• Keep it when the provenance matters: journalism, insurance claims and legal evidence all rely on it.