HEIC to AVIF Converter — Free Online
Convert HEIC photos to modern AVIF format in seconds. AVIF gives you smaller files with excellent quality—great for websites, sharing, and storage.
- Next-gen AVIF compression for smaller files without visible quality loss
- Fast, browser-based conversion on mobile and desktop
- Temporary processing only—files auto-deleted after processing
Upload files
- Select up to 30 files.
- Click 'Convert' to process.
- Automatic Download
Convert HEIC to AVIF Online
How HEIC to AVIF Conversion Works
Best Use Cases for HEIC to AVIF
Convert HEIC to AVIF — modern compression with exceptional quality
Convert HEIC images to AVIF to take advantage of next-generation image compression. Plomz helps you transform HEIC photos into AVIF files that are significantly smaller, visually accurate, and optimized for modern browsers and devices.
Why convert HEIC to AVIF?
HEIC (High Efficiency Image Container) is widely used by Apple devices for capturing high-quality photos with efficient storage. AVIF (AV1 Image File Format) is a newer, open standard designed specifically for high-performance image delivery on the web.
- Smaller file sizes: AVIF often delivers 30–50% smaller files than HEIC or JPEG at comparable quality.
- Excellent visual fidelity: AVIF preserves fine detail, gradients, and color accuracy.
- Modern browser support: AVIF is supported by major modern browsers.
- Web-optimized delivery: AVIF is designed for fast loading and responsive web experiences.
How HEIC to AVIF conversion works
HEIC images store pixel data using advanced compression based on the HEVC codec. During conversion, the image is decoded into a full-resolution raster representation, including color and optional depth or auxiliary data.
The decoded image is then passed through the AV1 image encoder, which analyzes spatial and frequency information to apply highly efficient, perceptual compression. The result is re-encoded as an AVIF image that maintains visual quality while dramatically reducing file size.
- Full-color decoding: HEIC is decoded into high-bit-depth pixel data.
- Perceptual compression: AVIF selectively removes visually redundant information.
- High dynamic range support: AVIF supports HDR and wide color gamuts.
Real-world use cases
- Web developers: Developers convert HEIC images from iPhones to AVIF to deliver faster page loads and improved Core Web Vitals without sacrificing image quality.
- Content creators: Photographers and creators export HEIC photos from mobile devices and convert them to AVIF for modern websites and portfolios.
- E-commerce teams: Product images captured on iOS devices are converted to AVIF to reduce bandwidth usage while keeping product details sharp.
- Performance-focused teams: Engineering teams adopt AVIF as part of a broader image optimization strategy for high-traffic applications.
Security & privacy
Plomz is built with privacy as a core principle. HEIC files are processed temporarily for conversion and are never stored permanently or shared.
- Encrypted transfer: Files are uploaded over secure HTTPS connections.
- Ephemeral processing: Images exist only long enough to complete conversion.
- Automatic deletion: Uploaded and converted files are removed as soon as job completes.
Frequently Asked Questions
Is HEIC to AVIF conversion lossless?
AVIF can be either lossy or lossless. Most converters use high-quality lossy compression to reduce size while keeping excellent visual detail. If you need maximum fidelity, choose the highest quality setting (if available).
Why convert HEIC to AVIF?
AVIF typically produces much smaller files than JPEG or PNG at similar quality, making it ideal for websites and fast sharing—while still supporting transparency (when applicable).
Will AVIF work everywhere?
AVIF is supported by most modern browsers and many apps, but some older software may not open it. If compatibility is your top priority, consider converting to JPG or PNG instead.
Does AVIF support transparency?
Yes. AVIF supports alpha transparency, which can be useful for overlays and certain graphics.
Are my files stored on your servers?
No. Files are processed temporarily and automatically deleted after processing.
Does this work on mobile devices?
Yes. Plomz works on modern smartphones and tablets without installing any software.
Built for modern image delivery
Plomz is developed by engineers focused on performance, privacy, and forward-compatible web standards. HEIC to AVIF conversion is part of a broader effort to help teams adopt next-generation image formats responsibly.
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