HEIC Metadata and EXIF Data: What Transfers When You Convert

HEIC files carry extensive metadata. Every HEIC photo from an iPhone contains EXIF camera data, GPS coordinates, timestamps, color profiles, and Apple-specific data like depth maps and Live Photo sequences. When you convert to JPG, some of that metadata transfers and some is permanently lost.

This guide explains exactly what metadata HEIC files contain, what survives conversion, what disappears, and how to control metadata for privacy.

What Metadata HEIC Files Contain

HEIC files store four distinct categories of metadata. Each category serves a different purpose and has different compatibility with other formats.

EXIF Data

EXIF is the core metadata standard for digital photographs. Every HEIC file from a camera or smartphone includes these fields:

• Camera make and model (e.g., Apple iPhone 16 Pro)
• Lens information (focal length, aperture, lens model)
• Exposure settings (shutter speed, ISO, aperture value)
• Date and time (original capture and digitized timestamps)
• GPS coordinates (latitude, longitude, altitude)
• Image dimensions (pixel width and height)
• Color space (sRGB, Display P3, or other ICC profiles)
• Orientation (rotation and mirror flags)
• Flash status (fired, did not fire, auto mode)
• White balance (auto, daylight, cloudy, custom Kelvin value)

EXIF data in HEIC follows the same specification as JPG. The fields are identical. The storage mechanism differs -- HEIC embeds EXIF inside an ISOBMFF container rather than in the JFIF/APP1 header -- but the data itself is the same.

XMP Metadata

XMP (Extensible Metadata Platform) stores richer descriptive data. Adobe created the standard, and it is widely used in professional photography. HEIC files support XMP fields including:

• Keywords and tags added in editing applications
• Star ratings and color labels from Lightroom or Bridge
• Copyright and creator information
• Edit history markers from Adobe tools
• Custom metadata schemas defined by photographers

XMP data in HEIC transfers to JPG during conversion because JPG also supports XMP. The data is stored differently in each format, but quality conversion tools remap it correctly.

IPTC Metadata

IPTC fields store editorial and publishing metadata. News agencies and stock photography services rely on these fields:

• Headline and caption
• Credit line and source
• City, state, country location
• Category codes and supplemental categories
• Usage rights and licensing terms

HEIC supports IPTC metadata, and it transfers to JPG during conversion. Professional photographers who embed IPTC data for stock submissions do not lose it when converting HEIC to JPG with proper tools.

Apple-Specific Metadata

This is where HEIC diverges sharply from JPG. The HEIC container stores data types that have no equivalent in the JPG format:

• Depth maps from Portrait Mode (a secondary image encoding distance from the camera)
• Image sequences from Live Photos (the still frame plus 1.5 seconds of video before and after)
• Non-destructive edit history (every adjustment made in Apple Photos stored as reversible instructions)
• HDR gain maps (additional data that maps standard dynamic range to HDR when displayed on HDR screens)
• Auxiliary images (alpha masks, semantic segmentation data for foreground/background separation)
• Burst sequence metadata (grouping and key photo selection for burst shots)

This Apple-specific data is permanently lost when converting to JPG. The JPG format has no container structure to hold depth maps, image sequences, or edit history. No conversion tool can preserve what the target format cannot store.

What Transfers During Conversion to JPG

Standard EXIF data transfers fully. Camera model, exposure settings, timestamps, GPS coordinates, color profiles, and orientation tags all survive conversion to JPG when using a quality conversion tool.

Basic XMP data transfers. Keywords, ratings, copyright fields, and creator information carry over. Complex XMP schemas from proprietary tools may lose custom fields.

IPTC data transfers. Headlines, captions, credit lines, and licensing terms move from HEIC to JPG without loss.

ICC color profiles transfer. The Display P3 or sRGB profile embedded in the HEIC carries over to the JPG. This ensures colors render consistently after conversion.

What Is Lost During Conversion

Depth maps are lost. JPG has no mechanism to store a secondary depth image. Portrait Mode blur adjustments become baked into the pixel data. You can no longer change the blur amount or focal point after conversion.

Live Photo sequences are lost. The video component of a Live Photo exists only in the HEIC container. Converting to JPG extracts the still frame only. The 3-second video clip is discarded.

Non-destructive edit history is lost. Edits made in Apple Photos become permanent. You cannot revert a crop, exposure change, or filter after converting to JPG. The edited result is baked into the pixels.

HDR gain maps are lost. iPhones since the 12 series embed HDR gain maps in HEIC files. These maps allow HDR-capable displays to show extended dynamic range while SDR displays show a standard rendition. JPG cannot store gain maps. The converted file becomes a standard dynamic range image.

Auxiliary images are lost. Semantic segmentation masks, alpha channels, and supplementary image data stored in the HEIC container have no equivalent in JPG.

Privacy Considerations

HEIC metadata creates real privacy risks when sharing photos publicly.

GPS Location Data

Every iPhone HEIC photo with location services enabled contains precise GPS coordinates. The latitude and longitude are accurate to within a few meters. Sharing an unstripped HEIC or JPG file from your home, workplace, or child's school publishes those locations to anyone who reads the EXIF data.

GPS data survives conversion to JPG. Converting your HEIC to JPG does not remove location information unless the conversion tool explicitly strips it.

Device Information

EXIF data includes the exact device model, operating system version, and sometimes a unique device identifier. This information can be used to fingerprint or track a specific device across multiple shared images.

Timestamps

Original capture timestamps reveal when you took a photo. Combined with GPS data, this creates a detailed log of where you were and when. Modify or strip timestamps before sharing if this level of tracking concerns you.

How to Strip Metadata Before Sharing

Different tools offer different levels of metadata control.

On macOS

Open the image in Preview. Go to Tools > Show Inspector > EXIF. Preview does not let you delete EXIF fields individually, but you can use the Export function and uncheck "Include location information" to strip GPS data.

For complete metadata removal, use the Terminal command:

exiftool -all= photo.jpg

This removes all EXIF, XMP, and IPTC data from the file. The ExifTool utility is free and available through Homebrew (brew install exiftool).

On Windows

Right-click the file, select Properties > Details > Remove Properties and Personal Information. Windows lets you strip specific fields or all metadata at once.

On iPhone

Before sharing, go to the share sheet and tap Options at the top. Toggle off Location to strip GPS data from the shared copy. The original file retains its full metadata.

With HEICify

HEICify's converter processes files entirely in your browser. No files are uploaded to external servers, so your metadata is never exposed to third parties during the conversion process. Your EXIF data stays on your device throughout the entire conversion.

How to Verify Metadata After Conversion

Always verify that metadata survived conversion if timestamps, GPS, or camera data matters to your workflow.

ExifTool (macOS, Windows, Linux)

The most comprehensive metadata viewer available. Run:

exiftool converted-photo.jpg

This prints every metadata field in the file. Compare against the original HEIC file to confirm nothing was lost:

exiftool original-photo.heic

macOS Preview

Open the converted JPG in Preview. Press Cmd+I to open the Inspector. Click the EXIF tab to see camera data, GPS coordinates, and timestamps.

Windows File Properties

Right-click the JPG file. Select Properties > Details. Windows displays camera model, exposure settings, dimensions, GPS coordinates, and date information.

Online EXIF Viewers

Sites like Jeffrey's EXIF Viewer read metadata from uploaded files. Use these only for non-sensitive images. Uploading a photo to a web service exposes its metadata to that service.

Metadata Preservation by Conversion Tool

Not every converter handles metadata the same way. Some preserve it fully. Some strip it silently. Some destroy it accidentally.

| Tool | EXIF Preserved | XMP Preserved | GPS Preserved | Notes | | --- | --- | --- | --- | --- | | HEICify | Yes | Yes | Yes | Browser-based, no upload, full preservation | | macOS Preview | Yes | Yes | Yes | Native Apple support | | ImageMagick | Yes | Yes | Yes | Requires explicit flags for some fields | | Adobe Lightroom | Yes | Yes | Yes | Adds Lightroom XMP data on export | | GIMP | Partial | No | Partial | Strips some fields by default | | Generic online converters | Varies | Rarely | Varies | Many strip metadata to reduce file size | | iOS share sheet | Yes | Yes | Configurable | GPS can be toggled off per share |

HEICify preserves all standard metadata during conversion. EXIF camera data, GPS coordinates, timestamps, color profiles, XMP fields, and IPTC data all transfer to the output JPG or PNG. The conversion runs entirely in your browser, so metadata is never transmitted to an external server.

Generic online converters are the least reliable. Many strip metadata during server-side processing either intentionally (to reduce file size and processing time) or as a side effect of their conversion pipeline. If metadata preservation matters, avoid converters that upload your files.

The Bottom Line

HEIC files carry rich metadata across four categories: EXIF, XMP, IPTC, and Apple-specific container data. Standard metadata -- camera settings, GPS, timestamps, color profiles, keywords, and copyright -- transfers fully to JPG when using quality conversion tools. Apple-specific data -- depth maps, Live Photo sequences, edit history, and HDR gain maps -- is permanently lost because JPG cannot store it.

For privacy, strip GPS coordinates and device information before sharing photos publicly. On iPhone, use the share sheet's Location toggle. On desktop, use ExifTool for complete control.

When metadata preservation matters, use a tool that explicitly maintains it. HEICify's converter preserves all transferable metadata while processing files entirely in your browser. For more on HEIC's role in photography workflows, see the HEIC for Photographers guide. For a foundational overview of the format, read What is HEIC?.