Convert HEIC to JPG in the browser, privately

Apple’s default camera format is HEIC (HEIF). It is smaller than JPEG at a similar look, which is why the phone uses it. It is also why a Windows PC, an old CMS, or a school portal answers “unsupported file.” The usual fix is an upload converter. The quieter fix is to decode the file locally and write a JPEG.

What HEIC actually is

HEIF is a container. HEIC is the common iPhone flavor that stores HEVC-coded pixels. The Library of Congress format note on HEIF/HEIC is the short official description. Apple’s support note Using HEIF or HEVC media on Apple devices is the platform side. Neither page requires you to upload the photo to a random website.

Convert on the device

1. Open Convert Image on StackImage.
2. Drop a .heic / .heif file (or a mixed batch of JPEG, PNG, WebP, AVIF).
3. Choose JPG if you need maximum compatibility, or WebP/AVIF if the destination supports them.
4. Download the converted file. The original stays on disk.

After you have a JPEG

• Compress if the converted file is still too large for email.
• Strip EXIF if you are about to post a phone photo that still has GPS.
• Resize if the destination is a 1200-pixel-wide form, not a 48 MP original.

When a cloud converter is still reasonable

Use a service like CloudConvert when you need a rare output (TIFF, JPEG 2000, a color profile you cannot get from canvas) and the photo is not sensitive. For “make this iPhone shot open in Outlook,” a local decode is enough.

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