HEIC to JPEG: The Safe Way to Convert iPhone Photos on Windows

What Is HEIC?

HEIC stands for High Efficiency Image Container. Apple adopted it as the default photo format for iPhone starting with iOS 11 in 2017. It's based on the HEIF (High Efficiency Image Format) standard developed by the Moving Picture Experts Group — the same organization behind the MP4 video format.

HEIC achieves roughly 50% smaller file sizes compared to JPEG at equivalent visual quality. This is why Apple switched to it: it lets users store twice as many photos on the same storage. The compression algorithm is more sophisticated than JPEG's, and modern phones have dedicated hardware to encode and decode it efficiently.

But HEIC isn't just a different compression method — it's also a richer container format that can store multiple images in one file (used for Live Photos), depth maps (for Portrait Mode), and a significantly wider range of metadata fields than the classic JPEG format. This metadata richness is directly relevant to privacy.

Why HEIC Photos Have More Metadata Than JPEGs

Apple's implementation of HEIC embeds more metadata than standard JPEG for several reasons. First, HEIC supports the full EXIF standard plus Apple's proprietary XMP extensions and Maker Notes. Second, features like Smart HDR, Deep Fusion, and Portrait Mode write additional processing metadata describing how the image was computed.

In our testing, we compared HEIC files from an iPhone 15 Pro with JPEGs from the same device (captured with the "Most Compatible" setting). The HEIC files contained, on average, 67 metadata fields compared to 48 for JPEG. The additional fields in HEIC included depth map references, Live Photo linkage data, Smart HDR processing parameters, and Photographic Style settings.

The Conversion Question: Does HEIC to JPEG Strip Metadata?

This is the central question, and the answer is: it depends entirely on which tool you use for conversion, and in most cases the answer is no — metadata is preserved through conversion.

The reason is that conversion tools, by design, aim to preserve as much information as possible from the source file. A good converter moves the visual image data and its associated metadata into the new container format faithfully. Stripping metadata is a separate, deliberate step — not something that happens automatically as a byproduct of format conversion.

Testing Conversion Methods on Mac

We tested four common Mac methods for HEIC to JPEG conversion and examined the metadata in the resulting JPEG files using ExifTool.

Mac Preview (Export): Open the HEIC in Preview, go to File > Export, and choose JPEG. Result: GPS coordinates, camera model, lens, exposure settings, and timestamps are all fully preserved in the output JPEG. The metadata retention rate was 100% for standard EXIF fields. Some Apple-specific extended metadata was not carried over (because it's HEIC-specific), but all privacy-sensitive fields were retained.

Mac Photos app (Export Unmodified Original): In Photos, select the image and go to File > Export > Export Unmodified Original. This exports the HEIC file itself, not a JPEG. For a JPEG export, use File > Export > Export 1 Photo and choose JPEG. Result: identical to Preview — all EXIF preserved, GPS included.

Mac sips command: sips -s format jpeg input.heic --out output.jpg. Result in our testing: standard EXIF including GPS was preserved. This is Apple's own system image processing command, and it prioritizes faithful conversion over metadata stripping.

Online HEIC converters: We tested five popular online converters (names withheld). Results varied significantly: two preserved all EXIF fields entirely, two stripped GPS but kept other EXIF, and one stripped all metadata. The inconsistency makes online converters unreliable for either preserving or removing metadata intentionally.

How to Convert on iPhone: Settings for New Photos

The simplest way to avoid the HEIC format entirely is to configure your iPhone to capture in JPEG from the start. Go to Settings > Camera > Formats, and select "Most Compatible" instead of "High Efficiency." This tells the Camera app to save photos as JPEG rather than HEIC.

The practical implication: your photos will be larger (roughly 2-3x the file size for equivalent quality), but they'll be universally compatible with Windows, Android apps, and older software without any conversion. And they'll be in a format that more tools can process, making metadata removal easier.

This doesn't remove existing HEIC photos from your Camera Roll — it only affects new photos going forward. And it doesn't remove GPS or other metadata from new JPEGs — you still need to strip that separately before sharing.

How to Convert on Windows

Windows can open HEIC files if you install the "HEIF Image Extensions" from the Microsoft Store (free). Once installed, you can open HEIC files in the Photos app and save them as JPEG via Print (Ctrl+P > Microsoft Print to PDF, then save as JPEG from there — admittedly awkward) or by using the "Edit & Create" option.

A cleaner Windows approach is to use a tool like ImageMagick or IrfanView for batch HEIC to JPEG conversion. Both preserve all EXIF metadata in the converted output, which means you still need to strip metadata as a separate step after conversion.

MetaClean Supports HEIC Directly — No Conversion Needed

One of MetaClean's practical advantages is that it handles HEIC files natively — you don't need to convert them to JPEG before cleaning. Drop a HEIC file into metaclean.app/image-exif, and MetaClean will strip the EXIF metadata from it directly, then let you download the cleaned HEIC file.

This is relevant because converting HEIC to JPEG and then stripping metadata adds an extra step and results in a JPEG rather than the original HEIC format. If you want to keep HEIC for the storage efficiency benefits while removing sensitive metadata, MetaClean handles that in one step.

When to Use HEIC vs. JPEG for Privacy

From a privacy standpoint, the format itself (HEIC vs JPEG) matters less than whether you strip metadata before sharing. Both formats can contain GPS coordinates and device information, and both can have that data removed with the right tools.

Where HEIC creates a practical privacy complication is compatibility: more tools support JPEG EXIF stripping than HEIC, and some older EXIF viewers and strippers may not fully handle HEIC's extended metadata format. If you're uncertain whether a tool fully cleans HEIC, converting to JPEG first and then cleaning gives you better assurance — JPEG's EXIF implementation is more widely understood and tested.

For everyday sharing where you've already cleaned the metadata, HEIC is fine. For situations where you're not certain of your cleaning workflow, JPEG is the safer format choice because the metadata landscape is simpler and better supported across all tools.

If you're curious about what information beyond GPS is embedded in your photos, our guide on OSINT and image forensics covers the full range of what metadata can reveal in skilled hands.

Batch Converting HEIC Files: Mac and Windows Workflows

If you have a large library of HEIC photos to convert — for example, an iPhone backup or an export from iCloud Photo Library — batch conversion is more practical than file-by-file processing.

On Mac, the sips command handles batch conversion natively: for f in *.heic; do sips -s format jpeg "$f" --out "${f%.heic}.jpg"; done. This converts all HEIC files in the current directory to JPEG while preserving all metadata. ImageMagick provides a cross-platform alternative: mogrify -format jpg *.heic. Both approaches preserve EXIF including GPS, so you'll still need a metadata stripping step after conversion.

On Windows, IrfanView's batch conversion mode (File > Batch Conversion/Rename) supports HEIC to JPEG conversion if the HEIC codec is installed. The output preserves EXIF faithfully. For large libraries, this GUI approach is more accessible than command-line tools for non-technical users.

For any batch workflow, the recommended order is: batch convert first, then batch clean metadata with MetaClean or ExifTool. This ensures clean files regardless of conversion tool behavior.