ConvertPort

Convert JPG to AVIFFree Online Converter

Convert up to five JPG 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 JPEG images to convert them to AVIF right in your browser.

    How it works

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

    1. Choose files

      Drop your JPEG 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 JPEG images

    JPEG (JPG) is the most widely used image format for photographs and web images. It uses lossy compression to produce small file sizes while maintaining acceptable visual quality, making it ideal for photos shared online, via email, or on social media.

    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.

    JPEG — source format guide

    What is JPEG?

    JPEG (commonly saved with the .jpg extension) is a lossy raster image format designed for photographs and continuous-tone images. It compresses images by discarding visual data that the human eye is less likely to notice, producing small file sizes at the cost of some irreversible quality loss on each save.

    When was JPEG invented?

    JPEG was standardized in 1992 by the Joint Photographic Experts Group, building on research from the 1980s. It became the dominant format for digital photography and web images throughout the 1990s and remains the most widely used photo format today.

    What is JPEG used for?

    • Digital photography from cameras and smartphones
    • Web images, blog posts, and social media photos
    • Email attachments and document embedding
    • Print workflows where moderate compression is acceptable
    • Thumbnails and preview images

    Best practices for JPEG

    • Use quality settings between 75–90 for web photos — higher values rarely improve visible quality but increase file size significantly.
    • Avoid re-saving the same JPG multiple times; each save applies additional lossy compression.
    • Do not use JPG for images with text, logos, or sharp edges — PNG or WebP lossless are better choices.
    • Strip unnecessary EXIF metadata before publishing to reduce file size and protect location privacy.
    • Resize images to the display dimensions needed rather than uploading full-resolution photos.

    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

    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 JPEG

    Converting JPEG 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 JPEG to AVIF

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

    • Start with the highest quality JPEG 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 JPEG to AVIF conversion free?

    Yes, converting JPEG 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 JPEG 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 JPEG to AVIF conversion take?

    Most JPEG 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 JPEG files?

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

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

    No. Choose your JPEG 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 JPEG images kept private during conversion?

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