myriadfile

HEIC to PNG converter

Make lossless PNG copies of HEIC photos for editing, design work or apps that reject HEIC. Everything runs locally in your browser.

Runs on your device. Nothing is uploaded.
RunsIn your browser
UploadsNone
CollectionImage tools
Drop HEIC images hereor choose files. PNG output is lossless.or paste with Ctrl V / ⌘ V

Good to know
  • AVIF output appears only in browsers that can encode AVIF. WebP output is unavailable in a few older Safari versions.
  • Converted files contain no EXIF metadata, so location and camera details are removed. Rotation is applied to the pixels.
  • GIF input uses the first frame only. Multi-image HEIC files (bursts) use the first image.
  • Very large batches are converted one file at a time to keep memory use low.

When PNG is the better choice

PNG is lossless: saving a photo as PNG keeps every pixel exactly as decoded, and re-saving it later loses nothing. That makes PNG a good intermediate format when you plan to edit a photo several times, add text, or cut out a background in a design tool.

The cost is file size. A 12-megapixel iPhone photo is often 2–3 MB as HEIC, but can be 15–25 MB as PNG, because lossless compression cannot discard the fine noise that cameras capture. For sharing, emailing or uploading, HEIC to JPG is usually the better choice.

How to convert HEIC to PNG

  1. Add HEIC files. Drop them on the bay, choose them, or paste from the clipboard.
  2. Keep PNG selected. PNG has no quality slider because it is lossless. Optionally set a maximum width or height to keep files manageable.
  3. Convert and check. Each file shows the PNG size. Select a file to compare it with the original.
  4. Download. Save files individually or all at once as a ZIP.

Settings explained

Max width and height
The most effective way to make a PNG smaller. Halving the width and height cuts the pixel count, and roughly the file size, to a quarter.
Max size per image (KB)
For PNG, Myriadfile can only shrink the dimensions to meet a limit, because PNG has no quality setting to lower.

Does HEIC have transparency?

HEIF can store transparency, but iPhone camera photos never use it, so the PNG will be fully opaque. Transparency in PNG matters when you later remove a background in an editor; PNG keeps that cut-out, while JPG would fill it with a solid colour.

PNG and colour

iPhone photos are captured in a wide colour space (Display P3). Browsers convert images to the display’s colour space when drawing them, so very saturated reds and greens may look slightly less vivid after conversion. For most photos the difference is hard to see.

Troubleshooting

The PNG files are huge
That is normal for photos saved losslessly. Set a max width of 2000–2500 px, or use JPG or WebP for photos you only need to view.
My editor still will not open the file
Check the extension is .png and that the download finished. Some editors need the file saved to a local folder rather than opened from the browser’s download bar.

Frequently asked questions

Is PNG better quality than JPG?

PNG is lossless, so it keeps everything from the decoded HEIC. JPG at 90% looks the same to most people at a fraction of the size.

Is HEIC lossless?

iPhone HEIC photos are lossy, like JPG. Converting to PNG preserves the photo as it is, but cannot restore detail the camera already compressed away.

Are my files uploaded?

No. Decoding and PNG encoding happen inside your browser.

Can I convert many files at once?

Yes. Add as many as you like; they are processed one after another and can be downloaded as a ZIP.

Why does the PNG look identical to the JPG version?

Because at normal viewing sizes, a high-quality JPG is visually indistinguishable. PNG’s advantage shows up when you edit and re-save repeatedly.

Sources