ConvertPort

Convert HEIC to AVIFFree Online Converter

Convert up to five HEIC images to AVIF in your browser. No file uploads or account needed.

Select images


JPG, PNG, WebP, HEIC, AVIF, TIFF, GIF, or SVG — always converts to AVIF. Up to 10MB per image. Max 5 images.

    Add your HEIC images to convert them to AVIF right in your browser.

    How it works

    The output is preset to AVIF. Each HEIC file can be up to 10 MB.

    1. Choose files

      Drop your HEIC images into the box or choose them from your device.

    2. Convert

      Convert — the output format is already set to AVIF, so just click the convert button.

    3. Download

      Download each AVIF image individually, or choose Download all as ZIP when at least two files are ready.

    About HEIC images

    HEIC (High Efficiency Image Container) is the default photo format on iPhones and many modern cameras. It uses advanced compression to store high-quality images in smaller files than JPEG, but is not widely supported on older devices and websites — converting to JPG, PNG, or WebP makes sharing easier.

    About AVIF images

    AVIF (AV1 Image File Format) is a modern image format that delivers excellent compression and quality. It is ideal for web photos when you need smaller files than JPEG or WebP with broad browser support.

    HEIC — source format guide

    What is HEIC?

    HEIC is a container format that stores images using HEVC (H.265) compression, achieving roughly half the file size of JPEG at equivalent quality. It supports 16-bit color depth, transparency, multiple images in one file (Live Photos), and depth maps — but has limited support outside the Apple ecosystem.

    When was HEIC invented?

    HEIC is based on the HEIF (High Efficiency Image File Format) standard, published by MPEG in 2015. Apple adopted HEIC as the default photo format on iOS 11 (2017) and macOS High Sierra, making it the standard output for iPhone and iPad cameras.

    What is HEIC used for?

    • Default photo capture on iPhones and iPads since iOS 11
    • High-quality image storage with efficient compression on modern devices
    • Live Photos and burst photo sequences on Apple devices
    • Professional workflows on macOS with Apple Photos and Final Cut Pro
    • Archival storage where file size matters and Apple compatibility is sufficient

    Software that can open HEIC files

    Best practices for HEIC

    • Convert HEIC to JPG before sharing photos with people on Windows or Android devices that may not have HEIC support.
    • Keep original HEIC files as backups when storage efficiency and quality matter on Apple devices.
    • On iPhone, you can set Settings → Camera → Formats → Most Compatible to save JPG instead of HEIC by default.
    • When converting HEIC for web use, prefer WebP for smallest file size or JPG for maximum compatibility.
    • Install the HEIF Image Extension on Windows 10/11 to open HEIC files natively without converting.

    AVIF — output format guide

    What is AVIF?

    AVIF is a modern raster image format based on the AV1 codec. It typically delivers smaller files than JPEG or WebP at similar visual quality, supports HDR, wide color gamuts, and transparency, and is supported in all major browsers.

    When was AVIF invented?

    AVIF was finalized in 2019 as part of the AV1 video codec ecosystem developed by the Alliance for Open Media. It brings AV1 compression to still images and is increasingly adopted for modern web delivery.

    What is AVIF used for?

    • High-efficiency web images and responsive picture elements
    • Photography where bandwidth and storage matter
    • Replacing large JPEG or PNG assets on performance-focused sites
    • Next-generation image delivery alongside WebP fallbacks

    Software that can open AVIF files

    Best practices for AVIF

    • Use AVIF for web photos when you can provide JPG or PNG fallbacks for older clients.
    • Keep quality between 50–80 for photos; very high settings rarely justify the extra bytes.
    • Test output on target browsers before replacing all site assets with AVIF.
    • Prefer AVIF over JPEG when optimizing Core Web Vitals and Largest Contentful Paint.

    When to choose AVIF over HEIC

    Converting HEIC to AVIF is useful when you need to optimize images for a specific platform or use case. Whether you are preparing photos for a website, reducing file sizes for faster loading, or switching to a format with different features like transparency or better compression, ConvertPort handles the conversion instantly while preserving as much quality as possible.

    Best practices for converting HEIC to AVIF

    Follow these guidelines to get the best results when converting HEIC images to AVIF:

    • Start with the highest quality HEIC source file available — converting a low-quality image cannot restore lost detail.
    • Choose AVIF when it fits your use case: JPG for photos and small file sizes, PNG for transparency and sharp graphics, WebP for modern web optimization.
    • Resize images to the dimensions you actually need before or during conversion to avoid unnecessarily large output files.
    • Review the converted AVIF file at full size before publishing or sharing to confirm quality meets your expectations.

    Benefits of using ConvertPort

    Convert up to five images per batch on your device. When several files are ready, you can download them as a single ZIP.

    Your images stay on your device

    Your browser opens, processes, and prepares your images for download.

    How local processing works

    • Image files are read from your device.
    • Conversion happens in your browser.
    • Converted files are available to download from the current tab.
    • No account is required.
    • You choose where to save the results.
    • Your original files stay as they are.

    Saving your files

    Download the converted images before closing the tab. ConvertPort does not keep a copy for you to retrieve later.

    Image privacy FAQ

    Does ConvertPort upload my photos?

    No. Image processing takes place on your device.

    Does converting replace the original?

    No. The download is a separate file.

    Can I share a download link for the result?

    Save the file to your device first, then share the file through the app of your choice.

    Frequently asked questions

    Is HEIC to AVIF conversion free?

    Yes, converting HEIC to AVIF with ConvertPort is free. There are no hidden fees, watermarks, or required accounts. You can convert up to five images per batch, with files up to 10 MB each.

    Will converting HEIC to AVIF reduce image quality?

    Quality depends on the formats involved. Converting from a lossless format like PNG to a lossy format like JPG may reduce quality slightly. ConvertPort uses high-quality conversion settings to minimize any visible loss. For the best results, start with the highest quality source image available.

    How long does HEIC to AVIF conversion take?

    Most HEIC to AVIF conversions complete within a few seconds. Larger files up to the 10 MB limit may take slightly longer. You can convert up to five images in a single batch.

    What is the maximum size for HEIC files?

    Each HEIC file can be up to 10 MB. Convert up to five images per batch.

    Do I need to install software to convert HEIC to AVIF?

    No. Choose your HEIC files in your browser, convert them to AVIF and save the results. You can use the tool without installing anything or creating an account.

    Are my HEIC images kept private during conversion?

    Yes. Your HEIC images and converted files stay on your device. ConvertPort processes the files in your browser.