What Is HEIC and Why Does iPhone Use It?
HEIC (High Efficiency Image Container) is Apple's preferred image format since iOS 11 in 2017. Every photo your iPhone takes by default is saved as a HEIC file. Apple chose this format because it offers several technical advantages over JPEG:
- 50% smaller file sizes — HEIC uses the HEVC (H.265) codec, which compresses images far more efficiently than JPEG. This means you can store twice as many photos on your iPhone without running out of space.
- Better image quality — HEIC supports 16-bit color depth compared to JPEG's 8-bit. This means richer colors, smoother gradients, and more detail in highlights and shadows.
- Transparency support — Unlike JPEG, HEIC supports alpha transparency, similar to PNG.
- Burst photo support — HEIC can store multiple images in a single file, making burst photography seamless.
- Non-destructive editing — When you edit a photo on iPhone, the original HEIC data is preserved alongside the edits.
The tradeoff is compatibility. While Apple devices handle HEIC natively, most Windows PCs, Android phones, web browsers, and social media platforms do not support HEIC out of the box. This is why you frequently need to convert HEIC to JPG.
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Why You Need to Convert HEIC to JPG
There are several practical reasons why converting HEIC to JPG is often necessary:
Sharing with Non-Apple Users
If you send a HEIC photo to someone on Windows or Android, they may not be able to open it. Converting to JPG ensures universal compatibility — every device, browser, and app in the world can open a JPG file.
Social Media Uploads
Most social media platforms either do not accept HEIC uploads or convert them automatically with unpredictable results. Converting to JPG before uploading gives you control over the quality and dimensions.
Printing
Print shops and photo labs almost universally require JPG or TIFF files. HEIC files need to be converted before printing.
Web Use
Websites and blogs require JPG, PNG, or WebP. HEIC is not a web-friendly format. If you need to display iPhone photos on a website, convert them first.
Email Attachments
Many email clients cannot render HEIC previews. Recipients may see a blank placeholder instead of your photo. JPG works everywhere.
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Method 1: Online Converter (Recommended)
The fastest and most reliable way to convert HEIC to JPG is using an online converter like ImageResizer Studio. This method works on any device and gives you full control over output quality.
Step 1: Go to the HEIC to JPG Converter
Navigate to ImageResizer Studio's HEIC to JPG converter. The tool runs entirely in your browser — no file is uploaded to any server.
Step 2: Upload Your HEIC Photos
Drag and drop your HEIC files onto the upload area, or click to browse your device. You can upload multiple files at once for batch conversion.
Step 3: Choose JPG as Output Format
Select JPG as your output format. You can also adjust the quality slider:
- 85% quality — Best balance of file size and visual quality for most uses
- 90% quality — Higher quality for printing or archival purposes
- 95% quality — Near-lossless conversion when you need maximum fidelity
Step 4: Resize (Optional)
If you want to resize the image at the same time, enter your target dimensions. For example, resize to 1920×1080 for web use or 400×400 for a profile picture.
Step 5: Download Your JPG
Click "Convert" and download your JPG file. The conversion preserves the visual quality of the original HEIC while creating a universally compatible file.
Why This Method Is Best
- No software installation — Works in any modern browser
- Privacy-first — Processing happens locally, files never leave your device
- Batch conversion — Convert multiple HEIC photos at once
- Quality control — Adjust compression to your needs
- Resize while converting — Save a step by resizing during conversion
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Method 2: Windows Photos App (Built-in)
Windows 10 and 11 include a built-in HEIC codec that lets you view and convert HEIC files without installing additional software.
Viewing HEIC Files
Windows 10 version 1803 and later can display HEIC files in the Photos app. If your version of Windows does not show HEIC thumbnails, you may need to install the HEIF Image Extensions from the Microsoft Store (free).
Converting HEIC to JPG via Photos App
1. Open the HEIC file in the Windows Photos app (double-click the file)
2. Click the three-dot menu (⋯) in the top-right corner
3. Select "Save as" from the dropdown menu
4. Choose JPG as the output format
5. Select a save location and click "Save"
Limitations of the Photos App Method
- No quality control — The app uses a default compression level with no way to adjust it
- One file at a time — You must convert each HEIC file individually
- No resize option — You cannot change dimensions during conversion
- No batch processing — Converting 50 photos means 50 manual operations
- Codec required — Older Windows versions need the HEIF Image Extensions installed
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Method 3: Preview on Mac
If you are on a Mac, the built-in Preview app handles HEIC to JPG conversion effortlessly.
Converting via Preview
1. Double-click the HEIC file — it opens in Preview by default
2. Go to File > Export
3. Choose JPEG from the Format dropdown
4. Adjust the quality slider — drag left for smaller files, right for higher quality
5. Click Save
Advantages of Preview
- Quality slider — You control the compression level
- Batch conversion — Select multiple files, then File > Export All
- No internet required — Works completely offline
- Free — Already installed on every Mac
Limitations
- Mac only — Not available on Windows or mobile
- Limited format options — Only exports to JPG, PNG, PDF, and TIFF
- No resize during conversion — You must resize separately
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Quality Comparison Between Methods
| Method | Quality Control | Batch Support | Resize Option | Privacy | Speed |
|--------|----------------|---------------|---------------|---------|-------|
| ImageResizer Studio | Yes (1-100%) | Yes (50 files) | Yes | Excellent (local) | Fast |
| Windows Photos App | No (fixed) | No (one at a time) | No | Good (local) | Medium |
| Mac Preview | Yes (slider) | Yes (Export All) | No | Excellent (local) | Fast |
The bottom line: If you need control over quality, batch conversion, or resizing, use ImageResizer Studio. If you just need a quick one-off conversion and are on Mac, Preview works well. The Windows Photos app is the least flexible option.
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When to Use JPG vs PNG vs WebP
Understanding when to use each format helps you choose the right output during conversion:
Use JPG When
- Sharing photos with anyone (universal compatibility)
- Posting on social media
- Sending via email
- Uploading to websites
- Printing photos
Use PNG When
- The image has transparency or sharp graphics
- You need lossless quality (no compression artifacts)
- Editing the image further in another tool
Use WebP When
- Optimizing for web performance (30% smaller than JPG)
- Your audience uses modern browsers (97%+ support)
- You want the best of both worlds (quality + small files)
You can convert HEIC to any of these formats using ImageResizer Studio's HEIC to PNG and HEIC to WebP converters.
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Tips for Preserving Metadata During Conversion
HEIC files contain valuable metadata — camera settings, GPS location, date/time, and more. Here is how to handle metadata during conversion:
Keep Metadata
Most conversion tools preserve EXIF metadata by default. If you want to keep your camera settings and location data, use a tool that supports metadata preservation. ImageResizer Studio retains metadata during format conversion.
Strip Metadata for Privacy
If you are sharing photos publicly, you may want to remove GPS coordinates and other personal data. Use the Image Metadata Viewer to inspect and strip metadata before sharing.
Check Metadata After Conversion
After converting, verify the metadata is intact (or removed) by:
1. Right-click the JPG file in Windows Explorer or Finder
2. Select "Properties" (Windows) or "Get Info" (Mac)
3. Review the Details tab for EXIF data
Common Metadata Fields Preserved
- Camera make and model
- Date and time the photo was taken
- GPS coordinates (latitude/longitude)
- Focal length, aperture, shutter speed, ISO
- Copyright information
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Quick Conversion Checklist
Before converting your HEIC photos, run through this checklist:
1. Back up originals — Keep your HEIC files as master copies
2. Choose the right output format — JPG for compatibility, WebP for web
3. Set quality to 85% — Optimal for most use cases
4. Resize if needed — Don't convert at full resolution if you only need a smaller version
5. Strip metadata if sharing publicly — Remove GPS and personal information
6. Verify the result — Open the converted file and check quality
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Summary
Converting HEIC to JPG on Windows 10/11 is straightforward with the right tool. The three methods covered — ImageResizer Studio, Windows Photos app, and Mac Preview — each have their strengths:
- ImageResizer Studio offers the most control with quality adjustment, batch conversion, resize options, and complete privacy
- Windows Photos app is convenient for quick single-file conversions with no quality control
- Mac Preview provides good quality control and batch support but is limited to Apple devices
For most users, ImageResizer Studio's HEIC to JPG converter is the best choice. It is free, works in any browser, and gives you complete control over the conversion process.
Frequently Asked Questions
Will converting HEIC to JPG reduce quality?
Some quality reduction is inherent in JPG's lossless compression, but at 85% quality or higher, the difference is imperceptible to the human eye. The original HEIC file retains more data, so keep your originals if you plan to edit the photos later.
How do I convert HEIC to JPG on Windows without installing software?
Use the Windows Photos app — open the HEIC file, click the three-dot menu, select 'Save as,' and choose JPG. For batch conversion and quality control, use ImageResizer Studio's online converter, which runs in your browser with no installation required.
Can I convert HEIC to JPG and resize at the same time?
Yes. ImageResizer Studio lets you convert format and resize dimensions in a single step. Upload your HEIC file, select JPG as output, enter your target dimensions, and download. This saves time compared to converting and then resizing separately.