2026-06-293 min readUtilities

Can't open photos taken with iPhone on computer? How to batch convert HEIC to JPEG and save

We will explain in detail the nature and merits of the image format ``HEIC'' taken with the iPhone, compatibility issues in the Windows environment, and the steps to safely convert all images to JPEG/PNG format on a browser without using the Internet.

#iPhone#HEIC#JPEG conversion#I can't open the photo

§1. I sympathize with this problem: Can't open the photos I sent? Days of being confused by the HEIC wall

"When I transferred a beautiful photo I took with my iPhone to my computer, it had an unfamiliar extension '.heic' and I couldn't open it on Windows..."

When I tried to upload a photo to a flea market app, government application form, or company submission system, I got an error saying The format is not supported'' and it was rejected.''

“I wanted to quickly convert the photo to JPEG and submit it, but I couldn’t figure out how to convert it, so I panicked…”

If you are an iPhone user, you have faced this "HEIC compatibility issue" at least once. It is a very stressful experience to have a photo that looks beautiful without any problems on the iPhone screen, but as soon as it is sent to the outside environment (Windows PC or web service), it turns into "baggage that cannot be opened."


§2. Explanation of the cause: Why are iPhone photos marked as HEIC? Compatibility issues

This problem occurs because Apple uses its own highly compressed file format to save space on the iPhone.

  • What is HEIC (High Efficiency Image Container):

This is an image format that Apple has adopted as standard since iOS 11. By applying video compression technology (HEVC/H.265), it is possible to reduce the file size to almost half while maintaining beautiful image quality that is equal to or better than conventional JPEG. This technology is a dream come true for smartphones with severe capacity limitations.

  • Compatibility issues with Windows and other services:

However, this technology is not as widespread as the world standard JPEG. In particular, Windows standard settings and web services that have been in operation for a long time do not have a mechanism to decode HEIC files (expand them as image data), so an error will occur and they cannot be displayed.

There is also a way to add a "HEIF image extension" to display on Windows, but depending on the environment, it may be time-consuming and may require paid extensions.

Additionally, uploading photos all at once to a free HEIC conversion service'' on the Internet consumes data traffic (giga), and private photos are stored on an external server, even temporarily, so there are strong concerns about privacy and security.


§3. Solution using tools: Safe and instant batch JPEG conversion with ZeroTools

"I want to convert important photos all at once to JPEG files that can be opened on Windows without publishing them on the Internet..."

The smartest solution to this request is our iPhone HEIC photo bulk JPEG/PNG conversion tool.

This tool does not send any image data to an external server and converts it to JPEG or PNG at ultra-high speed using only the local rendering engine of your PC or smartphone browser.

Solution steps

1. Open the iPhone HEIC photo bulk JPEG/PNG conversion tool page.

2. Select multiple .heic files that you want to convert, or drag and drop them into the dotted line frame (loading will be completed in an instant as it is processed within the terminal).

3. Select JPEG (or PNG) as the output format.

4. Click “Save all images (ZIP)”.

5. The batch-converted JPEG images will be instantly downloaded as a ZIP file in one folder.

You can safely and comfortably convert HEIC to JPEG without using communication packets. Please bookmark it and use it as an essential tool when exchanging photos taken with your iPhone on your computer.