HEIC vs JPEG: What's the Difference? A Complete Comparison
HEIC vs JPEG: Side-by-Side Comparison
If you've ever transferred photos from an iPhone to a Windows PC, you've probably encountered HEIC files. These two formats represent different eras of image compression technology — JPEG dates back to 1992, while HEIC arrived in 2017. Let's break down exactly how HEIC and JPEG compare across every dimension that matters.
File Size
This is where HEIC shines. HEIC files are approximately 40-50% smaller than equivalent JPEG files at the same visual quality. A 3MB JPEG might only be 1.5MB as a HEIC file.
For a phone with 128GB of storage, this means you can store roughly twice as many photos in HEIC format compared to JPEG. To put that in real numbers: a typical iPhone user who takes 3,000 photos per year saves approximately 5-8GB annually by using HEIC instead of JPEG.
Here is what the size difference looks like across different types of images:
| Image Type | JPEG Size | HEIC Size | Savings |
|---|---|---|---|
| 12MP photo (landscape) | 3.2 MB | 1.6 MB | 50% |
| 12MP photo (portrait) | 2.8 MB | 1.5 MB | 46% |
| 48MP photo (iPhone 15 Pro) | 8.5 MB | 4.2 MB | 51% |
| Screenshot (1170x2532) | 1.1 MB | 0.5 MB | 55% |
| Low-light photo | 4.0 MB | 2.1 MB | 48% |
Image Quality
At the same file size, HEIC produces noticeably better image quality than JPEG. This is because HEIC uses more modern compression algorithms (HEVC/H.265) compared to JPEG's DCT-based compression from the early 1990s.
Where JPEG shows visible compression artifacts (especially around sharp edges and in gradient areas), HEIC maintains smooth, clean details. The difference is most noticeable in:
HEIC also supports 16-bit color depth compared to JPEG's 8-bit limit. This means HEIC can represent 65,536 shades per color channel versus JPEG's 256, resulting in smoother gradients and more accurate color reproduction — particularly important for HDR content and professional photo editing.
Compatibility
This is JPEG's strongest advantage. JPEG is supported by virtually every device, operating system, browser, and application ever made. It's the universal image format.
| Platform | JPEG Support | HEIC Support |
|---|---|---|
| Windows | Built-in | Requires codec |
| macOS | Built-in | Built-in (10.13+) |
| Linux | Built-in | Limited |
| Android | Built-in | Varies by device |
| iOS | Built-in | Built-in (iOS 11+) |
| Web Browsers | All | Safari only |
| WordPress | Yes | No |
| Photoshop | Yes | Yes (recent versions) |
| GIMP | Yes | Plugin required |
| Social media | All platforms | Auto-converted on upload |
This compatibility gap is the primary reason people need to convert HEIC to JPG. If you regularly share photos with Windows or Android users, conversion is essentially unavoidable.
Features
| Feature | HEIC | JPEG |
|---|---|---|
| Transparency | Yes | No |
| Animation | Yes | No |
| Color Depth | 16-bit | 8-bit |
| Multi-image | Yes | No |
| Non-destructive edits | Yes | No |
| HDR Support | Yes | Limited |
| Depth maps | Yes | No |
| EXIF metadata | Yes | Yes |
| Progressive loading | No | Yes |
| Licensing | HEVC patents | Royalty-free |
The multi-image capability is particularly noteworthy. A single HEIC file can contain multiple images, which is how Apple stores Live Photos (a still image plus a short video clip), burst sequences, and depth maps all in one container. JPEG has no equivalent — each image must be a separate file.
Compression Technology Explained
JPEG uses a technique called Discrete Cosine Transform (DCT) that was groundbreaking in 1992. It divides images into 8x8 pixel blocks and compresses each block independently. This block-based approach is why you sometimes see a "blocky" appearance in heavily compressed JPEGs.
HEIC, built on the HEVC/H.265 codec, uses a much more sophisticated approach. It supports variable block sizes (from 4x4 up to 64x64), advanced intra-prediction (guessing pixel values based on neighboring blocks), and more efficient entropy coding. These techniques, refined over 25 years of video compression research, are why HEIC achieves dramatically better compression ratios.
Metadata and Editing
Both HEIC and JPEG support EXIF metadata (camera settings, GPS coordinates, timestamps, etc.). However, HEIC has an important advantage for photo editing: it stores edits as separate instructions layered on top of the original image data.
When you crop, rotate, or apply filters to an HEIC photo in Apple's Photos app, the original image data remains untouched. The edits are stored as reversible instructions, meaning you can always revert to the original. With JPEG, every save operation re-compresses the image, causing a small but cumulative quality loss known as "generation loss." If you edit and save a JPEG ten times, the quality degradation becomes visible.
When to Use JPEG
When to Use HEIC
Converting Between HEIC and JPEG
When you need to share HEIC photos outside the Apple ecosystem, converting to JPEG is the most reliable solution. PhotoFormatLab's HEIC to JPG converter processes files entirely in your browser — your photos never leave your device, ensuring complete privacy.
For bulk conversions, our batch converter can handle hundreds of files at once, delivering them as a convenient ZIP download. If you want even better compression than JPEG for web use, consider converting HEIC to WebP instead.
You can also compress your images after conversion to further reduce file sizes without changing formats.
The Verdict
HEIC is the technically superior format, but JPEG's universal compatibility makes it the practical choice for sharing. The best approach: let your iPhone save in HEIC for storage efficiency, and convert to JPEG when you need to share outside Apple's ecosystem.
For web use specifically, consider converting to WebP instead of JPEG — it offers better compression than JPEG while being supported by 97%+ of browsers. Read our complete image format comparison for a broader look at all available formats, or check out what is HEIC for a deeper dive into Apple's format.
Frequently Asked Questions
Does converting HEIC to JPEG reduce quality?
Yes, there is a small quality reduction because JPEG uses lossy compression. However, at 90% quality the loss is imperceptible to the human eye. For truly lossless conversion, use HEIC to PNG instead.
Can I convert JPEG back to HEIC?
Technically yes, but it would not improve quality. Converting a lossy format to another lossy format never recovers lost data. The resulting HEIC file would simply re-encode the already-compressed JPEG data.
Why doesn't Apple just use JPEG?
Apple switched to HEIC because it cuts storage requirements roughly in half. For a company selling devices with fixed storage tiers, this is a significant user experience improvement — customers can store twice as many photos without upgrading to a larger storage option.
Is HEIC better than WebP?
Both are modern formats with excellent compression. HEIC has a slight edge in compression efficiency for photographs, but WebP has vastly better platform support (97%+ of browsers vs Safari-only for HEIC). For web use, WebP is the better choice. See our WebP vs PNG comparison for more on WebP.
Will Windows ever natively support HEIC?
Windows can support HEIC after installing the HEIF Image Extensions from the Microsoft Store, but native out-of-the-box support is unlikely in the near future due to HEVC licensing costs. Learn more in our guide on how to open HEIC files on Windows.
How do I batch convert hundreds of HEIC files?
Use PhotoFormatLab's batch converter. Simply drag and drop all your HEIC files, choose your output format and quality, and download the converted files as a ZIP archive. Everything is processed locally in your browser.