HEIC to PNG — When iPhone Photos Need Transparency or Lossless Quality

HEIC to PNG: The Less Common (But Sometimes Essential) iPhone Conversion

Most people converting HEIC files want JPG — it's smaller and plays everywhere. But there are specific situations where PNG is the right target:

1. You need transparency (e.g., iOS portrait mode depth cutout)
2. You need lossless quality for editing or archival
3. You're creating screenshots or technical documentation where JPG compression artifacts would be visible
4. A platform or application specifically requires PNG

If none of these apply, HEIC to JPG is probably what you actually want — smaller files, faster transfers.

What HEIC Actually Contains

HEIC (High Efficiency Image Container) isn't really a single format — it's a container based on the HEIF standard that usually holds HEVC (H.265) compressed image data. Apple adopted it in iOS 11 (2017) because HEVC images are roughly 50% smaller than equivalent JPGs.

Here's what makes HEIC interesting:

Feature	HEIC	JPG	PNG
Compression type	Lossy (usually)	Lossy	Lossless
Bit depth	10-bit	8-bit	8 or 16-bit
Color space	Wide color (P3)	sRGB	sRGB or wider
Transparency	Supported	No	Yes
Depth maps	Yes (portrait mode)	No	No
Multi-image	Yes (burst, HDR)	No	No
Metadata	Rich (EXIF, GPS, depth)	EXIF, GPS	Basic

That 10-bit color depth and P3 wide color gamut is why iPhone photos sometimes look slightly different when converted — the conversion needs to map wide color to sRGB.

The Portrait Mode Depth Trick

If you've shot a portrait mode photo on iPhone, the HEIC file contains both the regular image and a depth map. Some advanced tools can use this depth map to extract the subject with transparency — essentially getting a free background removal. This only works with HEIC → PNG (since JPG can't carry transparency).

How to Convert

Online

MyPDF's HEIC converter handles HEIC to PNG with proper color space mapping. Desktop tools like GIMP (free) or Photoshop also handle HEIC to PNG conversion with proper color space mapping.

On Mac (Built-in, Zero Software)

Mac handles HEIC natively:

1. Open the HEIC file in Preview
2. File → Export
3. Format: PNG
4. Save

Or use Automator for batch conversion — create a Quick Action that converts all selected files.

On Windows

Windows 10/11 supports HEIC through the HEIF Image Extensions (free from Microsoft Store):

1. Install "HEIF Image Extensions" from the Store
2. Open the HEIC file in Paint or Photos
3. Save As → PNG

Or use a dedicated converter like CopyTrans HEIC (free, adds right-click conversion).

Batch Conversion (Desktop)

XnConvert (free, cross-platform): Handles HEIC natively on most systems. Add files → Set output to PNG → Convert. iMazing HEIC Converter (free, Windows/Mac): Purpose-built for HEIC conversion. Drag and drop, choose PNG or JPG, done.

File Size: The Tradeoff

PNG files from HEIC conversion will be significantly larger:

Source	HEIC Size	PNG Output	JPG Output
iPhone photo (12MP)	2-3 MB	15-25 MB	3-5 MB
iPhone photo (48MP)	5-8 MB	40-60 MB	8-15 MB
Screenshot	1-2 MB	3-5 MB	1-2 MB

Those PNG sizes look alarming. For web use or sharing, JPG is usually more practical. PNG only makes sense when you specifically need lossless quality or transparency.

When to Choose PNG vs JPG for HEIC Conversion

Scenario	Choose
Sharing on social media	JPG
Emailing to someone	JPG
Printing photos	JPG (or TIFF)
Editing in Photoshop/GIMP	PNG or TIFF
Technical documentation	PNG
Screenshots with text	PNG
Background removal workflow	PNG
Website images	WebP (or JPG)
Archival	PNG or TIFF

Frequently Asked Questions

Does HEIC to PNG conversion lose quality?

Converting from HEIC (lossy) to PNG (lossless) preserves whatever quality the HEIC file has. No additional quality loss occurs — PNG stores the data losslessly. But you can't recover detail that was already lost during HEIC compression.

Can I convert HEIC files on an iPhone?

The simplest way: use the Files app's share sheet to convert, or email the photo (iOS automatically converts to JPG when sharing). For PNG specifically, use the Shortcuts app to create an automation.

Why are my converted colors slightly different?

iPhone shoots in P3 wide color gamut. If your conversion tool maps to sRGB (which most do), some colors — particularly vivid reds, greens, and blues — may shift slightly. For most photos, the difference is imperceptible.

Related Tools

• HEIC to JPG — The more common conversion (smaller files)
• Convert Image — Any format to any format
• Compress Image — Reduce PNG file size
• Remove Background — AI background removal