EXIF Viewer — Free Online Photo Metadata Viewer & Remover

What EXIF data reveals about you — and why it matters

When you take a photo with a smartphone or digital camera, the device quietly writes a detailed record alongside the image itself. This hidden data — called EXIF metadata — can contain over 200 fields, most of which are invisible to anyone just looking at the photo.

The most sensitive field is GPS location. Smartphones record the precise latitude and longitude where each photo was taken, accurate to within a few metres. A photo of your cat taken in your living room contains your home address. A selfie posted from a hotel embeds the hotel's exact location. Security researchers have repeatedly demonstrated that a sequence of Instagram photos can reveal someone's daily routine, home address, workplace, and frequented locations — all from EXIF coordinates.

Beyond location, EXIF data records your camera's serial number — a unique identifier that can link all photos taken with the same device across different accounts or platforms. The "Artist" and "OwnerName" fields may contain your full name as configured in your camera. The "Software" field reveals which version of Photoshop or Lightroom you used, and the "Edit history" in XMP metadata can show every adjustment you made to the image.

These details matter most when sharing images in sensitive contexts: survivors of domestic abuse, journalists protecting sources, whistleblowers, human rights workers in authoritarian regimes, and anyone who wants basic privacy when sharing photos online. Stripping EXIF data before sharing is a simple, effective privacy measure — and this tool makes it one click.

How lossless JPEG metadata stripping works

JPEG files are structured as a sequence of "markers" — 2-byte codes that signal the start of different data blocks. The file begins with a Start of Image marker (0xFFD8), followed by a series of APP segments (0xFFE0 through 0xFFEF), then the actual compressed image data starting at the Start of Scan marker (0xFFDA).

Metadata lives in the APP segments before the image data: - APP1 (0xFFE1) contains the EXIF block — camera settings, GPS, timestamps - APP13 (0xFFED) contains IPTC data — copyright, keywords, captions - APP2 (0xFFE2) may contain an ICC colour profile or XMP overflow

To strip metadata losslessly, the algorithm simply walks the marker sequence and skips the APP segments it wants to remove, then copies everything from the Start of Scan marker to the End of Image marker (0xFFD9) verbatim — byte for byte, without any decompression or re-encoding. The image data is never touched.

This is fundamentally different from the naive approach of re-encoding through a canvas element (which decompresses and recompresses the image, introducing quality loss). Binary marker manipulation preserves every pixel perfectly. File size decreases because the removed segments (typically 10–200 KB of metadata) are no longer included, but the visual content is identical to the original.

For selective stripping — keeping some EXIF fields while removing others — the tool uses piexifjs to parse the EXIF binary structure, delete specific tag IDs from the IFD entries, and re-serialise the modified EXIF block. Only the EXIF segment is rewritten; the image data remains untouched.

GPS in photos: how precise is smartphone location data?

Modern smartphones achieve GPS accuracy of 3–5 metres under open sky. In practice, photos taken indoors or in urban canyons may have accuracy of 10–50 metres due to satellite signal obstruction — but this is still precise enough to identify a specific room in a building or a specific house on a street.

The GPS data embedded in EXIF is stored as decimal degrees in the GPSLatitude and GPSLongitude tags, along with GPSLatitudeRef ("N"/"S") and GPSLongitudeRef ("E"/"W"). Some cameras also record GPSAltitude (metres above sea level), GPSSpeed (if taken from a moving vehicle), GPSImgDirection (compass bearing the camera was pointing), and GPSDateStamp/GPSTimeStamp (the exact UTC time of the fix).

The GPSHPositioningError field, present in newer iPhone photos, records the estimated horizontal accuracy radius in metres — so you can see exactly how precise the location claim is.

Some cameras offer a "GPS delay" — the camera records the last known GPS fix, which may be from several minutes earlier. Professional photographers sometimes note that GPS accuracy depends on how long the device had been active before the shot. Drones (DJI, etc.) typically achieve the best accuracy, recording sub-metre precision for aerial photography.

For most privacy purposes, the key takeaway is: any photo taken with a smartphone in a familiar location almost certainly reveals where you were to within 5–10 metres. This is precise enough to identify your home, your workplace, your children's school, or any other sensitive location.

IPTC vs EXIF vs XMP — three metadata standards explained

Photo metadata evolved through three separate standards, each serving different needs. Understanding the distinction helps you know which fields to inspect and which to strip.

**EXIF** (Exchangeable Image File Format) was standardised by JEITA in 1998 for digital cameras. It stores camera-generated technical data: camera make and model, lens, f-stop, shutter speed, ISO, focal length, flash, white balance, GPS coordinates, and timestamps. EXIF is automatically written by every digital camera and smartphone — you never have to manually add it. It lives in the APP1 segment of a JPEG file.

**IPTC** (International Press Telecommunications Council) metadata was developed in the 1990s for editorial workflows in newsrooms. It stores human-assigned descriptive data: photo caption, headline, keywords, category, location (city, state, country as text), photographer credit line, copyright notice, and contact information. Photojournalists fill in IPTC fields to label and rights-manage their images. It lives in the APP13 segment of a JPEG.

**XMP** (Extensible Metadata Platform) was created by Adobe in 2001 to address limitations of both EXIF and IPTC. It is an XML-based format stored in the APP1 segment (or as a sidecar .xmp file for RAW formats). XMP extends IPTC fields, adds Adobe-specific data (Lightroom develop settings, edit history, star ratings, colour labels, faces), and allows custom namespaces. The XMP History array records every edit operation performed in Photoshop — including operations that reveal what was cropped out of the original frame.

This tool reads and displays all three namespaces, allowing you to see the complete picture of what any given image file contains.