You took a great photo on your iPhone, tried to upload it to a website or share it with someone — and got an error saying the format is not supported. The culprit is almost always HEIC.
HEIC is Apple's proprietary image format. It is excellent in many ways, but it creates compatibility problems everywhere outside the Apple ecosystem. This guide explains what HEIC is and how to convert it instantly for free.
Quick Answer: Go to tinypngnow.com, drop your HEIC file onto the upload zone, select JPG or WebP as output format, and download. Done in 10 seconds, no signup, completely free.
What is HEIC?
HEIC stands for High Efficiency Image Container. Apple introduced it as the default photo format for iPhones starting with iOS 11 in 2017. It is based on the HEIF (High Efficiency Image Format) standard developed by the Moving Picture Experts Group.
HEIC uses advanced compression algorithms that produce files roughly 50% smaller than equivalent JPG files at the same visual quality. A photo that would be 4MB as a JPG might be only 2MB as HEIC.
Why iPhones use HEIC
- Smaller file sizes mean more photos fit on your phone storage
- Better quality at equivalent file sizes compared to JPG
- Supports Live Photos, depth maps, and HDR data in a single file
- Faster to encode and decode on Apple silicon chips
Why HEIC Causes Problems
Despite its technical advantages, HEIC has a major drawback — almost nothing outside Apple devices supports it natively.
- Windows — Cannot open HEIC files without installing a paid codec from the Microsoft Store
- Web browsers — Most browsers do not support HEIC for web display
- WordPress and CMSs — Most do not accept HEIC uploads
- Social media — Platforms convert HEIC automatically but often with quality loss
- Email — Many email clients cannot display HEIC attachments
- Android devices — No native HEIC support
Important: When you AirDrop a photo to a Mac or share via iMessage to another iPhone, Apple automatically handles the format. But when you use any other method — email, USB, uploading to websites — the HEIC file goes as-is and causes compatibility errors.
HEIC vs JPG vs WebP — Which to Convert To?
| Format | File Size | Browser Support | Best For |
|---|---|---|---|
| HEIC (original) | Small | Apple only | iPhone storage only |
| JPG | Medium | Universal | Maximum compatibility |
| WebP | Small | All modern browsers | Websites and apps |
| PNG | Large | Universal | When transparency needed |
Recommendation: Convert to WebP if using for websites (smaller files, modern browser support). Convert to JPG if you need maximum compatibility with older software and devices.
How to Convert HEIC to JPG Free — Step by Step
Method 1: TinyPNG Now (Recommended)
TinyPNG Now converts HEIC files entirely in your browser. No upload to any server, no account required, completely free with no limits.
- Open tinypngnow.com on any device
- Drag and drop your HEIC file(s) onto the upload area
- In the Settings panel, select JPG or WebP as Output Format
- Optionally adjust quality (75% recommended for photos)
- Click Compress and wait a few seconds
- Download the converted file
You can convert multiple HEIC files at once using bulk upload or the folder upload option. All files are processed simultaneously and can be downloaded as a single ZIP.
Pro Tip: If you are uploading iPhone photos to a WordPress website, convert to WebP format at 75% quality first. You will get smaller files than JPG with better visual quality — and Google PageSpeed will reward you for it.
Method 2: Change iPhone settings (prevent HEIC)
If you want your iPhone to save photos as JPG from the start, you can change the camera format setting:
- Open Settings on your iPhone
- Tap Camera → Formats
- Select Most Compatible instead of High Efficiency
Note: This will increase the file size of your photos significantly and use more storage. Only do this if compatibility is more important than storage efficiency.
Batch Converting Multiple HEIC Files
If you have an entire camera roll of HEIC photos to convert, TinyPNG Now handles bulk conversion efficiently. You can either drag multiple files at once or use the bulk folder upload button to select an entire folder of HEIC images.
All files are processed simultaneously in your browser, and you can download the converted files as a single ZIP — no need to download one by one.
Frequently Asked Questions
Does converting HEIC to JPG lose quality?
At 75-80% quality setting, the converted JPG will look visually identical to the original HEIC. The file size will be larger than the HEIC original (since JPG compression is less efficient) but the visual quality will be excellent.
Can I convert HEIC on Windows?
Yes. TinyPNG Now works in any modern web browser including Chrome and Edge on Windows. You do not need to install anything. Just open the website and drag your HEIC files.
Is it safe to convert HEIC files online?
With TinyPNG Now, yes — because nothing is uploaded to any server. All processing happens in your browser using JavaScript. Your photos never leave your device.