Image Metadata Viewer

Image Metadata Viewer: Explore EXIF, IPTC, XMP, and File Properties

Every digital image carries far more information than the pixels you see. Embedded within the file are metadata records describing how, when, and where the image was captured; what camera and lens were used; copyright and authorship information; GPS coordinates; color space; and much more. Our Image Metadata Viewer extracts and displays all available metadata from JPEG, PNG, WebP, TIFF, RAW, and other image formats "” instantly, without uploading your file to any server.

Understanding image metadata matters in multiple professional contexts: photographers need EXIF data for legal and portfolio purposes; forensic investigators use metadata for provenance verification; web developers need to check metadata before publishing images to avoid privacy leaks; SEO specialists check alt text and color profiles; content moderators verify claimed timestamps; and journalists verify image authenticity.

What is EXIF Data?

EXIF "” Exchangeable Image File Format "” is the most common image metadata standard. Developed by the Japan Electronic Industries Development Association (JEIDA) in 1995 and now maintained by JEITA, EXIF defines a set of tags embedded in JPEG and TIFF files (and supported in WebP, HEIF, and PNG via compatible mechanisms) that record technical parameters of the image capture.

EXIF data is written by digital cameras, smartphones, and some software at the moment of image capture. Key EXIF tags include:

Camera and Capture Information

• Make and Model: the camera manufacturer and model name (e.g., "Apple", "iPhone 15 Pro")
• DateTimeOriginal: the timestamp when the shutter was pressed, in local time
• ExposureTime: shutter speed (e.g., 1/500 seconds)
• FNumber: aperture as an f-stop value (e.g., f/2.8)
• ISOSpeedRatings: ISO sensitivity (e.g., 800)
• FocalLength: the focal length of the lens in millimeters (e.g., 50mm)
• FocalLengthIn35mmFilm: equivalent focal length on 35mm full-frame sensor
• Flash: whether the flash fired and its mode
• MeteringMode: how the camera measured exposure (spot, center-weighted, evaluative)
• WhiteBalance: auto or manual white balance setting
• ExposureMode: manual, aperture priority, shutter priority, or program
• ExposureBiasValue: exposure compensation applied in stops (e.g., +1.0 EV)
• LensModel: the specific lens used (e.g., "EF 24-70mm f/2.8L II USM")
• BodySerialNumber: camera serial number (privacy-sensitive)

Image Properties

• PixelXDimension / PixelYDimension: image width and height in pixels
• XResolution / YResolution: pixel density (dpi or ppi), e.g., 72 PPI for screen, 300 DPI for print
• Orientation: rotation applied by the camera (1=normal, 3=180°, 6=90° CW, 8=90° CCW)
• ColorSpace: sRGB, Adobe RGB, or uncalibrated
• BitsPerSample: bit depth per channel (8, 16, etc.)
• Compression: compression type (JPEG, uncompressed)

GPS Metadata: Location Privacy Implications

Modern smartphones embed GPS coordinates in image EXIF data by default. The GPS tags include:

• GPSLatitude / GPSLatitudeRef: latitude in degrees, minutes, seconds and N/S hemisphere
• GPSLongitude / GPSLongitudeRef: longitude and E/W hemisphere
• GPSAltitude / GPSAltitudeRef: altitude in meters above/below sea level
• GPSTimeStamp / GPSDateStamp: GPS timestamp (UTC)
• GPSSpeed: speed of the device at capture time (from GPS)
• GPSImgDirection: compass direction the camera was pointing

A GPS-embedded photograph reveals exactly where the user was at the moment of capture. This is a significant privacy risk when sharing images publicly. Notable incidents include journalists inadvertently revealing source locations, domestic abuse victims being tracked through shared photos, and celebrities having home addresses discovered via social media photos.

Most social networks (Facebook, Instagram, Twitter/X) automatically strip GPS metadata from uploaded images, but not all services do. Before sharing images publicly, verify GPS data is removed using a metadata viewer or stripped using a metadata removal tool. On iOS: Settings → Privacy → Location Services → Camera → "Never" prevents GPS embedding. On Android, camera settings include a "Location tags" or "Save location" toggle.

IPTC Metadata: Professional Image Cataloging

IPTC (International Press Telecommunications Council) metadata standards were developed for photojournalism workflows in the 1990s and remain the standard for professional image management. IPTC fields include:

• Caption/Description: detailed description of the image content
• Headline: short title for the image
• Keywords: searchable keyword tags (comma-separated list)
• Creator/Byline: photographer's name
• Copyright Notice: copyright string (e.g., "© 2025 Jane Smith")
• Credit Line: how the image should be credited when published
• Source: originating organization or news agency
• City / State / Country: location where the image was captured
• Date Created: date the image was taken
• Category: editorial category (arts, news, sports, etc.)
• Rights and Permissions: usage rights information

IPTC metadata is typically embedded by photo editing software (Lightroom, Photoshop, Capture One) as part of the export process for stock photography, news agencies, and editorial workflows. The IPTC Core and IPTC Extension schemas are the professional standards for embedding descriptive metadata in images.

XMP Metadata: Adobe's Extensible Standard

XMP (Extensible Metadata Platform) was introduced by Adobe in 2001 and became an ISO standard (ISO 16684-1) in 2012. XMP uses RDF/XML to store structured metadata in a wide range of file formats including JPEG, PNG, PDF, SVG, audio, and video. It is designed to be extensible "” any application can define custom XMP schemas.

XMP is the primary metadata format used by Adobe applications. Lightroom Classic stores all catalog data (ratings, labels, adjustments, collections) as XMP sidecar files (.xmp) or embedded XMP in JPEG and TIFF files. Key XMP namespaces include:

• dc: (Dublin Core): title, description, subject, creator, rights, date
• xmp:: creation date, modification date, creator tool, rating
• xmpRights:: rights management "” usage terms, web statement URL
• photoshop:: headline, instructions, credit, source, city, country
• Iptc4xmpCore:: IPTC core metadata in XMP format
• exif:: EXIF technical data in XMP format
• lr: (Lightroom): Lightroom-specific fields including hierarchical keywords
• crs: (Camera Raw): Adobe Camera Raw/Lightroom development settings

ICC Color Profiles

ICC (International Color Consortium) profiles embedded in images define the color space of the image "” the gamut and tone response that maps numeric pixel values to absolute colors. Common ICC profiles:

• sRGB: the standard web color space. All consumer displays and browsers use sRGB by default. Images without an embedded profile are assumed to be sRGB.
• Adobe RGB (1998): wider gamut than sRGB, covering more greens and cyans. Used in professional photography and prepress workflows.
• Display P3: the color space used by Apple's Retina displays, iPhones, and many modern monitors. Wider gamut than sRGB (25% larger).
• ProPhoto RGB: very wide gamut used in Lightroom's internal processing. Images should be converted to sRGB or Display P3 before web publishing.
• CMYK: print color space. Web browsers do not natively support CMYK JPEG images "” they will be incorrectly rendered.

Checking an image's color profile before publishing is important: a JPEG with an Adobe RGB profile will look desaturated on screens that don't perform color management (many browsers do handle this, but not all). Publishing a CMYK JPEG to the web will produce unexpected colors.

PNG Metadata Chunks

PNG stores metadata in "chunks" "” named data blocks within the file. Key metadata chunks:

• tEXt/zTXt/iTXt: text metadata. tEXt and zTXt store Latin-1 text; iTXt stores UTF-8 Unicode. Fields like Author, Description, Creation Time, Software are commonly embedded here.
• gAMA: gamma correction value.
• cHRM: chromaticity coordinates defining the color space.
• iCCP: embedded ICC color profile.
• pHYs: physical pixel dimensions "” pixels per unit (DPI/PPI).
• tIME: last modification time.
• eXIf: EXIF data embedded in PNG (standardized in PNG 1.6).
• acTL/fcTL/fdAT: APNG (animated PNG) control chunks.

Reading Image Metadata Programmatically

JavaScript / Node.js with ExifReader

import ExifReader from 'exifreader';
import fs from 'fs';

const tags = ExifReader.load(fs.readFileSync('photo.jpg'));
console.log(tags['DateTimeOriginal']?.description);
console.log(tags['GPSLatitude']?.description);
console.log(tags['Make']?.value);

Browser-Side with ExifReader (no upload needed)

import ExifReader from 'exifreader';

fileInput.addEventListener('change', async (e) => {
  const file = e.target.files[0];
  const arrayBuffer = await file.arrayBuffer();
  const tags = ExifReader.load(arrayBuffer);
  console.log(tags['GPSLatitude']?.description);
});

Python with Pillow and piexif

from PIL import Image
import piexif

img = Image.open('photo.jpg')
exif_data = piexif.load(img.info.get('exif', b''))

for ifd in ['0th', 'Exif', 'GPS', '1st']:
    for tag, value in exif_data.get(ifd, {}).items():
        tag_name = piexif.TAGS[ifd].get(tag, {}).get('name', tag)
        print(f'{tag_name}: {value}')

ExifTool (Command Line)

# View all metadata
exiftool photo.jpg

# View only GPS data
exiftool -GPS* photo.jpg

# Export as JSON
exiftool -json photo.jpg

# Strip all metadata
exiftool -all= photo.jpg

# Copy metadata from one file to another
exiftool -tagsfromfile source.jpg dest.jpg

ExifTool, created by Phil Harvey, is the most comprehensive command-line metadata tool available. It supports hundreds of file formats and thousands of metadata tags, including manufacturer-specific MakerNote tags that other tools cannot read.

Stripping Metadata for Privacy

Before publishing images publicly, consider stripping metadata to protect privacy and reduce file size. Options:

• ExifTool: exiftool -all= photo.jpg removes all metadata.
• ImageMagick: convert input.jpg -strip output.jpg
• Squoosh / TinyPNG: most image optimization services strip metadata by default.
• ffmpeg: ffmpeg -i input.jpg -map_metadata -1 output.jpg
• iOS / macOS: Finder's "Get Info" shows basic metadata; Photos app has limited metadata editing. Use Preview for basic EXIF editing.
• Windows: right-click → Properties → Details tab → "Remove Properties and Personal Information".

Note that stripping metadata completely is different from retaining only certain fields. ExifTool can selectively remove specific tags: exiftool -GPS*= photo.jpg removes only GPS tags while preserving other EXIF data.

Metadata Forensics and Image Authenticity

Image metadata is used in digital forensics to verify image authenticity and provenance. Key forensic applications:

• Timestamp verification: DateTimeOriginal records the camera's time at capture. Cross-referencing with GPS timestamps (which are UTC and sourced from satellites) can reveal timezone discrepancies that indicate metadata tampering.
• Device fingerprinting: camera serial numbers (BodySerialNumber) and lens models (LensModel) can identify the specific device that captured an image.
• Software history: the Software and History XMP tags record which applications have processed the image. A "taken with iPhone" photo that shows Photoshop in the history may have been edited.
• Thumbnail inconsistency: JPEG files contain an embedded thumbnail. If the thumbnail differs from the full image, it may indicate the main image was swapped while the original thumbnail was retained "” a common indicator of manipulation.

Metadata alone cannot definitively prove or disprove image authenticity "” metadata can be easily fabricated or stripped. But inconsistencies in metadata, combined with pixel-level analysis, provide important evidence in authentication workflows.

File Size and Metadata Bloat

Metadata can significantly increase image file sizes. A JPEG exported from Lightroom with full metadata (EXIF, IPTC, XMP, Lightroom history) may have 100-200KB of metadata embedded, a significant overhead for a small image. For web publishing:

• Strip all metadata to minimize file size (most web tools do this automatically).
• Retain only copyright and creator fields if attribution is required.
• ICC profiles are worth keeping "” they are typically small (4-8KB for sRGB) and prevent color shift on color-managed displays.
• Lightroom's "Minimize Embedded Metadata" export option strips all non-essential tags.