HEIC and JPG are both photo formats, but they work very differently. HEIC (High Efficiency Image Container) is Apple's default format for iPhone photos since iOS 11, while JPG has been the universal standard for digital photos for decades. The short version: HEIC produces smaller files with better quality, but JPG works everywhere without compatibility headaches.
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What Is HEIC Format
HEIC stands for High Efficiency Image Container. It is Apple's implementation of the HEIF (High Efficiency Image File Format) standard , developed by the Moving Picture Experts Group (MPEG). Apple adopted it starting with iOS 11 and macOS High Sierra in 2017.
Under the hood, HEIC uses HEVC (H.265) compression, the same codec used for high-efficiency video. This is fundamentally different from how JPG works. JPG uses the older JPEG compression algorithm developed in the early 1990s. Because HEVC is a much more modern algorithm, it can store more visual information in fewer bytes.
HEIC also supports features that JPG simply cannot handle:
- 16-bit color depth (JPG maxes out at 8-bit)
- Multiple images in a single file (used for Live Photos and burst shots)
- Transparency (alpha channel support)
- Depth maps and auxiliary images (used for Portrait mode)
- Non-destructive edits stored alongside the original image
HEIC vs JPG: Quality and File Size
This is where HEIC genuinely shines. Apple's own data, and independent testing, consistently show that HEIC files are roughly half the size of equivalent JPG files at the same visual quality. A photo that would be 4 MB as a JPG might be 2 MB as a HEIC.
| Feature | HEIC | JPG |
|---|---|---|
| Compression type | Lossy (HEVC/H.265) | Lossy (JPEG DCT) |
| Typical file size | ~50% smaller than JPG | Baseline reference |
| Color depth | Up to 16-bit | 8-bit |
| Transparency | Yes | No |
| Multiple images per file | Yes | No |
| Metadata/edits | Non-destructive edits stored | EXIF only, edits bake in |
| Universal compatibility | Limited (Apple-first) | Near-universal |
| Browser support | Safari only (natively) | All browsers |
Both formats are lossy, meaning they discard some image data during compression. To understand how lossy compression works compared to formats that keep all data intact, check out this guide on lossy vs lossless compression .
For everyday photography, HEIC's quality advantage is real but subtle. You would need to zoom in closely or print large to notice the difference. The file size savings, however, are immediately practical. On a 128 GB iPhone, shooting in HEIC instead of JPG can mean fitting thousands more photos before running out of space.
Compatibility: Where Each Format Works
JPG is the most universally supported image format in existence. Every browser, every operating system, every photo editor, every social media platform, and every printer accepts it without question. HEIC is a different story.
HEIC works natively on:
- iPhone and iPad (iOS 11+)
- Mac (macOS High Sierra+)
- Safari browser
- Windows 11 (with the HEIF Image Extensions from the Microsoft Store)
- Recent versions of Adobe Photoshop and Lightroom
HEIC does NOT work natively on:
- Windows 10 and earlier (without a paid codec pack)
- Chrome, Firefox, and Edge browsers
- Most Android devices
- Older photo editing software
- Most online platforms (Facebook, Instagram, and others auto-convert on upload, but this adds a conversion step)
- Most print services and labs
Should You Use HEIC or JPG
The right answer depends on what you are doing with the photos.
Stick with HEIC if:
- You mostly view photos on your iPhone or Mac
- Storage space is tight and you want to fit more photos
- You use iCloud Photos and stay within the Apple ecosystem
- You shoot Live Photos or Portrait mode and want to preserve those features
Switch to JPG if:
- You regularly share photos with people on Windows or Android
- You upload photos to websites, blogs, or online stores
- You use photo editing software that does not support HEIC
- You send photos to a print lab
- You want the simplest, most compatible format possible
For a broader comparison of all the image formats you might encounter, the ultimate guide to image formats covers JPG alongside PNG, WebP, AVIF, and others so you can see the full picture.
Why Are My Photos HEIC
If you are suddenly seeing .heic files when you transfer iPhone photos to your computer, it is because Apple switched the default camera format to HEIC in iOS 11 (released September 2017). The setting is called "High Efficiency" in your iPhone camera settings, and it is on by default on any iPhone 7 or newer running iOS 11+.
Apple made this change for a practical reason: HEIC files are about half the size of JPG, so your iPhone can store roughly twice as many photos in the same amount of storage. Given that iPhones shoot 12-megapixel (and higher) photos, the savings add up fast.
How to Open HEIC Files
On a Mac, HEIC files open automatically in Preview, Photos, and most Apple apps. No extra steps needed.
On Windows, the situation is more complicated:
- Windows 11: HEIC support is built in for the Photos app, but you may need to install the free HEIF Image Extensions from the Microsoft Store .
- Windows 10: Microsoft sells the HEVC Video Extensions codec for a small fee, or you can use a free third-party viewer.
- Any platform: Converting the file to JPG is the fastest way to make it universally openable without installing anything.
How to Convert HEIC to JPG
There are several ways to convert HEIC to JPG depending on what device you are on.
On a Mac
- Open the HEIC file in Preview.
- Go to File, then Export.
- Choose JPEG from the Format dropdown.
- Adjust the quality slider if needed, then click Save.
On an iPhone (when sharing)
When you share a photo from the iPhone Photos app (via AirDrop to a non-Apple device, email, or Messages), iOS automatically converts it to JPG for compatibility. This happens silently in the background. However, if you connect your iPhone to a Windows PC via USB and copy files directly, they transfer as HEIC.
On Windows
- Open the HEIC file in the Photos app (after installing the HEIF extension).
- Click the three-dot menu and choose Save as.
- Select JPEG as the file type.
Online Converter
If you need to convert HEIC to JPG quickly without installing software, an online converter is the easiest option. You can use our JPG image converter to handle the conversion directly in your browser.
How to Change iPhone Photos to JPG by Default
If you want your iPhone to shoot in JPG from the start (so you never have to convert), here is how to change the setting:
- Open the Settings app on your iPhone.
- Scroll down and tap Camera .
- Tap Formats .
- Select Most Compatible instead of High Efficiency.
That is it. From that point on, your camera will save photos as JPG. The trade-off is larger file sizes, so you will fill up your storage faster. If you have a 64 GB or 128 GB iPhone and take a lot of photos, this is worth keeping in mind.
You can also set your iPhone to automatically convert HEIC to JPG only when transferring to a Mac or PC, while keeping HEIC on the device. To do this, go to Settings, then Photos, and under "Transfer to Mac or PC", choose Automatic . This converts to JPG when transferring to a non-Apple device but keeps the space-saving HEIC on your phone.
Convert HEIC to JPG Without Installing Anything
Need to turn your HEIC photos into universally compatible JPG files? Our free online image converter handles HEIC vs JPG conversions right in your browser, no software download required.
Convert Images Free →
Yes, but usually by a very small amount. Both HEIC and JPG are lossy formats, so converting from one to the other introduces a second round of compression. At high quality settings (90% or above), the difference is nearly invisible to the naked eye. For most sharing and printing purposes, the quality loss is not a practical concern. If you need to preserve maximum quality, keep the original HEIC file and only convert copies.
On Windows 11, yes. Microsoft offers the HEIF Image Extensions for free from the Microsoft Store, which adds HEIC support to the Photos app. On Windows 10, Microsoft charges a small fee for the HEVC codec. The free workaround is to convert the HEIC file to JPG using a free online converter, which makes the file openable on any device without installing anything extra.
HEIC has technical advantages: higher color depth (16-bit vs 8-bit), better compression, and support for transparency and auxiliary images. However, for professional workflows, RAW formats like Apple ProRAW, Canon CR3, or Sony ARW are far superior to both HEIC and JPG. Most professional photographers shoot RAW and export to JPG or TIFF for delivery. HEIC is mainly relevant for smartphone photography where storage efficiency matters more than absolute quality control.
iOS has a built-in compatibility feature that automatically converts HEIC photos to JPG when you share them via Mail, Messages to non-Apple users, or AirDrop to a Windows PC. The original HEIC file stays on your phone. This conversion only happens during the sharing process. When you connect your iPhone to a PC via USB and copy files manually, iOS transfers the raw HEIC files without converting them, which is why you see .heic files in that scenario.
Most major platforms like Instagram, Facebook, and Twitter accept HEIC uploads and convert them automatically on their servers. However, this conversion is handled by the platform, not you, so you have no control over the output quality or compression settings. For websites, blogs, and e-commerce stores where you upload images directly, HEIC support is inconsistent. Converting to JPG before uploading gives you predictable results and avoids potential upload errors on platforms that have not added HEIC support.
Almost, but not exactly. HEIF (High Efficiency Image File Format) is the open standard developed by MPEG. HEIC is Apple's specific implementation of that standard, using HEVC (H.265) as the compression codec. You may also see .heif files, particularly from Android devices or cameras that use the same standard with a different codec. For practical purposes, HEIC and HEIF refer to the same format family and the terms are used interchangeably in most contexts.