iPhones save photos as HEIC by default because it keeps good quality at a smaller size. The problem appears when you send those photos somewhere else: many upload forms, older Windows apps and websites still expect JPG. Here are the practical ways to convert HEIC to JPG, and when each one makes sense.
The useful takeaway
For a quick batch, convert in the browser. To avoid HEIC in future, switch the iPhone camera format to Most Compatible. Keep your original HEIC files as master copies.
What is a HEIC file?
HEIC is Apple’s name for photos stored in the HEIF container using modern compression. A HEIC photo is often noticeably smaller than a JPEG of similar visual quality, which saves space on the phone.
JPEG is older but accepted almost everywhere: job portals, government forms, marketplaces, email clients and every photo editor. Converting to JPG trades some of that efficiency for compatibility.
Method 1: convert HEIC to JPG in your browser
PikoZip’s HEIC to JPG tool decodes and converts photos on your own device, so the images are not uploaded to a server. This works on Windows, Mac, Linux and Android without installing anything.
- Open the HEIC to JPG tool and add up to 30 HEIC or HEIF photos.
- Adjust JPEG quality, or set a maximum width if the destination does not need full camera resolution.
- Review the preview, then download one photo or the whole batch as a ZIP.
Method 2: make the iPhone save JPG instead
If you regularly need JPG files, change the camera setting: open Settings, then Camera, then Formats, and choose Most Compatible. New photos are then saved as JPEG. Existing HEIC photos are not converted, and new files will be larger than before.
When you share photos from an iPhone to some apps, iOS may convert them to JPEG automatically. That behaviour depends on the app and how the photo is shared, so do not rely on it for an important upload.
Method 3: Windows and Mac built-in tools
On Windows 10 and 11, the Photos app can open HEIC files once the HEIF Image Extensions are installed from the Microsoft Store. You can then save a copy in another format. Converting many files this way is slow.
On a Mac, open the photo in Preview, choose File, then Export, and select JPEG as the format. For several files, select them all in Preview and export them together.
Which method should you use?
Choose based on how many photos you have and where they are going.
| Situation | Best option |
|---|---|
| A batch of photos for an upload form | Browser converter with a KB target or width |
| You never want HEIC again | iPhone setting: Most Compatible |
| One photo on a Mac | Preview export |
| Private photos you do not want uploaded | A converter that runs in your browser |
Quality and file-size tips
A JPG made from HEIC is usually larger than the original HEIC at similar visual quality. That is expected; you are paying in bytes for compatibility. If the destination has a size limit, set a maximum width or use a KB target in the same step instead of compressing twice.
Animated HEIC files are not supported by PikoZip. Static photos are converted normally. Always keep the original HEIC files, because converting back cannot restore detail removed by JPEG compression.
Make the next export a deliberate one.
Choose a representative image, check the actual result and keep your source master.
Convert HEIC to JPG