PNG can store the decoded pixels from a HEIC image without adding JPEG-style compression loss. That does not make the PNG more detailed than the original. It also does not guarantee that metadata, HDR information, depth data or every HEIF item will survive.

Keep the HEIC file as the source. Create a PNG copy when the receiving app needs PNG, transparency or a broadly handled lossless raster file.

HEIC and HEIF are related terms

HEIF is a container format used for high-efficiency images. Files from Apple devices commonly use the .heic extension and HEVC-based image coding. A HEIF file can contain more than one image or related data, while a basic PNG export usually represents one rendered image.

Apple's HEIF and HEVC support guide explains that Apple devices can capture HEIF media and that Photos or Preview on Mac can export an HEIF image as JPEG or PNG.

Use PNG for a clear reason

PNG works well for screenshots, graphics, images with sharp text and files that need alpha transparency. It uses lossless compression, but lossless does not mean small. A full-resolution phone photo converted from HEIC to PNG can become several times larger.

For an ordinary camera photo, JPEG or WebP may be a more practical delivery format when the destination accepts it. Choose PNG when its lossless pixels or transparency solve a real requirement.

Conversion cannot recover original sensor data

The converter first decodes the HEIC image, then encodes those pixels as PNG. It cannot recreate detail that was removed by the camera pipeline or HEVC compression. A larger PNG file is not proof of higher visual quality.

Avoid repeated conversions. Work from the original HEIC for each new output. Converting HEIC to JPEG, editing the JPEG, then saving PNG only carries the already compressed JPEG pixels into a lossless container.

Check color and HDR output

Modern phone photos may contain a wide color gamut or high dynamic range information. A converter or receiving app may map that content into standard dynamic range or a different color space. The PNG can therefore look flatter, darker or more saturated than the photo in Apple Photos.

Compare the files in a color-aware app and in the final destination. For print, client approval or archival work, use a workflow that states how profiles, bit depth and HDR data are handled.

Orientation must be applied correctly

A photo can store orientation as metadata instead of physically rotating every pixel. A converter should display that orientation and write the PNG upright. If it ignores the tag, the output may appear sideways.

Open the PNG after download. Do not trust the converter preview alone. Check portrait photos and images captured with the phone held upside down or rotated.

Transparency is not guaranteed by the file extension

PNG supports alpha transparency. Most normal iPhone photos are opaque. Converting one to PNG does not invent a transparent background.

Some HEIF workflows can carry alpha or auxiliary image data, but support varies. If transparency matters, inspect the actual output on light and dark backgrounds. Do not rely on a converter whose documentation only says “PNG supports transparency.”

Metadata may be dropped

HEIC photos can include capture date, location, camera details, orientation and other metadata. A basic browser or canvas converter may create new PNG pixels without copying those fields. Other apps may copy a subset.

Decide whether you need the metadata kept or removed. For a photo archive, preserve the original and use software that documents metadata handling. For a public upload, inspect the PNG with a metadata viewer instead of assuming conversion removed every private field.

Convert on a Mac

  1. Duplicate or keep the original HEIC in Photos or Finder.
  2. Open the image in Preview or Photos.
  3. Choose the export command available in that app.
  4. Select PNG.
  5. Choose the save location and a new filename.
  6. Open the PNG and check orientation, dimensions and color.
  7. Compare metadata if it matters.
  8. Test the file in the app that requested PNG.

Using Windows or an online converter

Windows may need the relevant HEIF support installed before an app can decode the source. If a converter says the file is invalid, test it in Apple Photos or another known HEIF-capable app before blaming the file.

An online converter may upload the photo. Check its retention policy before using personal, client, medical or location-sensitive images. A local converter avoids that upload only when its code actually processes the file on the device.

Batch conversion needs a sample check

When converting many photos, test three different files first: a portrait image, a landscape image and one with bright highlights or wide color. Confirm the naming pattern and destination folder before running the full batch.

After the batch finishes, compare the file count with the source set. Open samples from the beginning, middle and end. A converter can skip one damaged or unsupported item while still reporting that the overall job finished.

Final checks

  • The PNG has the same intended width and height.
  • The image is upright.
  • Skin tones and highlights look correct.
  • Transparency behaves as expected.
  • Important metadata is present or removed as intended.
  • The file size fits the destination limit.
  • The PNG opens in a second app.
  • The HEIC original remains saved.

HEIC to PNG questions

Does PNG improve HEIC quality?

No. It can preserve the decoded pixels without new lossy compression, but it cannot add missing detail.

Why is the PNG much larger?

PNG uses lossless compression and is often inefficient for full-color camera photos compared with HEIC.

Will PNG keep Live Photo motion?

No. A normal PNG is a still image and does not preserve the paired Live Photo video.

Will the location be removed?

Metadata handling depends on the converter. Inspect the final PNG rather than assuming.

Can PNG preserve transparency from HEIC?

PNG supports transparency, but the decoder and source must expose usable alpha data. Test the output.

Should I delete the HEIC after conversion?

No. Keep it when you need the original Apple photo, metadata, HDR information or future exports.