Upload your HEIC file
Drag and drop your HEIC image onto the converter area or click to browse your device. You can add multiple files at once for batch conversion.
HEIC to AVIF converter
Convert iPhone HEIC photos to modern AVIF format. Runs entirely in your browser. No server uploads, no registration required.
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Why convert HEIC to AVIF?
HEIC is the default photo format on Apple devices (iPhone, iPad, Mac). AVIF (AV1 Image File Format) offers comparable or better compression than HEIC but with broader browser support and an open, royalty-free standard. Converting HEIC to AVIF gives you a modern, web-optimized format.
AVIF supports millions of colors, alpha transparency, HDR, and both lossy and lossless modes. It is supported in Chrome 85+, Firefox 93+, Safari 16.4+, and Edge 121+. AVIF files are typically similar in size to HEIC but compatible with web browsers.
This conversion is ideal for publishing iPhone photos on the web with maximum compression and quality. For broader device compatibility (including older browsers), consider converting to WebP or JPG instead.
All processing happens locally in your browser — nothing is sent to any server. No registration, no limits, no watermarks.
How to convert HEIC to AVIF
Adjust settings
Choose your preferred quality and output options. The converter shows a live preview so you can compare the original HEIC with the AVIF result before downloading.Download your AVIF file
Click the download button to save your converted AVIF file. For multiple files, use the batch download option to get all results in one click.
When should you convert HEIC to AVIF?
Website optimization
HEIC photos from iPhone are not supported by web browsers. Converting to AVIF creates web-ready images with the best compression available — files are typically similar in size to HEIC but displayable in all modern browsers.Email and sharing
AVIF files are compact and supported by modern platforms. Converting HEIC to AVIF is ideal for publishing iPhone photos on the web while maintaining excellent quality at minimal file size.E-commerce and marketplaces
iPhone product photos in HEIC format need conversion for web listings. AVIF provides the smallest possible files with excellent quality for Shopify, WooCommerce, and other platforms.Documents and archival
AVIF is an open, royalty-free format ideal for long-term archival. Converting HEIC collections to AVIF ensures future compatibility with an industry-standard format.
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What makes this HEIC to AVIF converter different?
Complete privacy
Your HEIC files are processed entirely in your browser. Nothing is uploaded to any server – your images stay on your device at all times.No limits
Convert as many HEIC files to AVIF as you need. There are no daily limits, no file size restrictions, and no watermarks on the output.Quality control
Adjust compression settings to find the perfect balance between file size and image quality. Preview changes in real time before downloading.Instant conversion
All processing happens locally using modern browser APIs, which means conversion is fast and works even without an internet connection after the page loads.
HEIC to AVIF conversion in practice
Businesses, developers, and creators worldwide rely on image format compatibility. Whether you are preparing product images for Amazon, eBay, Etsy, Shopify, optimizing graphics for WordPress, Wix, Squarespace, or converting photos for government portals worldwide, having the right format matters.
Modern web standards increasingly favor efficient formats. Google PageSpeed Insights and Core Web Vitals metrics reward pages that use optimized images. Converting HEIC to AVIF can directly improve your Largest Contentful Paint (LCP) score, which impacts both search rankings and user experience.
For email marketing campaigns and social media, AVIF provides excellent compression while maintaining visual quality. Whether you are a freelancer, small business owner, or enterprise user, this converter handles your image conversion needs reliably and securely.
Tips for converting HEIC to AVIF
- Start with quality 85 – this is typically the sweet spot for AVIF compression, offering significant file size reduction with minimal visible quality loss.
- Batch convert for efficiency – if you have many HEIC files, use the batch conversion feature to process them all at once. This saves considerable time compared to one-by-one conversion.
- Compare before downloading – use the live preview to compare the original HEIC with the AVIF result. Adjust quality settings until you find the right balance for your specific use case.
- Keep your originals – always save a copy of your original HEIC files. Lossy compression is irreversible, so having the originals allows you to re-convert with different settings later.
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HEIC vs AVIF – format comparison
| Feature | HEIC | AVIF |
|---|---|---|
| Lossy compression | ✓ | ✓ |
| Lossless compression | ✓ | ✓ |
| Transparency (alpha channel) | ✓ | ✓ |
| Animation support | ✓ | ✓ |
| Web browser support | Safari 13+ (macOS / iOS) | Chrome 85+, Firefox 93+, Edge 85+, Safari 16.4+ |
| Color depth | 8/10-bit, HDR | 8/10/12-bit, HDR |
| Compact file size | ✓ | ✓ |
| Metadata (EXIF) | ✓ | ✓ |
Quality settings – what to choose when converting HEIC to AVIF?
The quality slider lets you set a value from 60% to 95%. Higher values mean better image quality but larger file sizes.
- 80% (default) – a good balance for web publishing. AVIF at 80% typically matches or exceeds the visual quality of the original HEIC at a similar file size.
- 85–90% – for high-quality galleries and portfolios where every detail matters.
- 60–70% – for thumbnails and preview images where file size is the priority.
Both HEIC and AVIF use advanced lossy compression (HEVC and AV1 respectively). AVIF typically produces similar or slightly smaller files than HEIC with comparable visual quality.
HEIC vs AVIF – file size comparison
AVIF and HEIC use different codecs but achieve similar compression efficiency:
iPhone photo (12 MP)
HEIC: 2.1 MB → AVIF: 1.8 MB
Portrait mode
HEIC: 1.5 MB → AVIF: 1.3 MB
Landscape photo
HEIC: 3.2 MB → AVIF: 2.7 MB
The main benefit is web compatibility. AVIF is supported in all modern browsers, while HEIC is limited to Apple devices.
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Convert other files to AVIF
Convert HEIC to other formats
Frequently asked questions about HEIC to AVIF conversion
Is converting HEIC to AVIF free?
Yes, this HEIC to AVIF converter is completely free with no limits. You can convert as many files as you need without registration or watermarks.
Does the converter upload my files to a server?
No. All processing happens locally in your browser using JavaScript and Canvas API. Your files never leave your device, ensuring complete privacy and security.
Will I lose quality when converting HEIC to AVIF?
AVIF supports lossless compression, so you can preserve the original image quality completely. If AVIF also supports lossy mode, you can choose lower quality for smaller files.
Can I add transparency when converting HEIC to AVIF?
While AVIF supports transparency, the original HEIC file does not contain transparency data. The converted AVIF file will maintain the same appearance as the original without transparent areas.
Can I convert multiple HEIC files at once?
Yes, the converter supports batch conversion. You can add multiple HEIC files and convert them all to AVIF simultaneously. Use the batch download option to save all converted files at once.
Why can't I open HEIC files on my Windows PC?
HEIC is Apple's proprietary image format used by iPhones and iPads. Windows doesn't natively support HEIC without additional codecs. Converting HEIC to AVIF solves this compatibility issue, allowing you to view and share your photos on any device.
Do all browsers support AVIF?
AVIF is supported by Chrome 85+, Firefox 93+, Safari 16.4+. For older browsers that don't support AVIF, you can use the HTML <picture> element to provide a fallback format like JPG or PNG.
What is the maximum file size I can convert?
There is no hard file size limit since processing happens in your browser. However, very large files (over 50 MB) may take longer to process depending on your device's available memory and processing power.
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