Prepare HEIC photos for email without losing your originals
A practical email workflow: make a compatible JPG copy, check its size and appearance, and keep your original photos separate.
Create a sharing copy, not a replacement
When a recipient cannot open an iPhone photo, making a JPG copy is a useful first step. Keep the HEIC original in your photo library or backup folder. A conversion changes the working file; it should not become a reason to delete the source before you have checked the result.
Start with the exact photos you intend to send rather than exporting an entire library. The 0UB HEIC converter produces one JPG still image per file and does not preserve original metadata. If a photo contains multiple images or information you need to keep, retain the original as well.
Convert one representative photo first
Open the HEIC to JPG tool and select one file. The documented file limit is 20 MB per photo. Start with the default quality setting of 90, convert, and download the result. Open the JPG outside the converter and check orientation, colors, and small details.
Compare the resulting file size with the attachment limit shown by your email service. A quality setting does not guarantee a particular number of megabytes. If the copy is too large, try a lower quality setting and inspect the new result before sending it.
Build a small, understandable attachment set
Use names that help the recipient recognize the subject. Keep originals and exported copies in different folders so that you do not accidentally attach the wrong format. For a larger collection, choose a few photos first and confirm that the recipient can open them.
Single-file conversion remains free. A Pro pass enables multi-image processing and ZIP downloads within the stated limits. The converter accepts up to 50 files, but smaller batches may work better on a device with limited memory. A reported decoding failure means that file needs attention; do not assume every selected item was converted.
Check the email before sending
Attach the downloaded JPGs and inspect the attachment names. Check that you have included the intended copies rather than the HEIC originals. For an important message, open at least one attachment from the draft before sending.
Conversion runs locally in your browser; sending an attachment through your email service is a separate action. The tool does not send email or verify delivery. Keep your source photos until the recipient confirms that the files are usable.
Try the HEIC to JPG converter ↗