Convert Image to AVIF Online — Free Next-Generation Image Format Converter
Convert Images to AVIF
Transform your JPG, PNG, and WebP images into AVIF format for up to 50% smaller file sizes. Free, private, and runs entirely in your browser with no file uploads.
How to Convert Image to AVIF Online
- 1
Upload Your Image
Go to Image Shuttle and drag your image file onto the upload area. Supported input formats include JPG, PNG, WebP, BMP, GIF, and TIFF. Batch conversion is supported — select multiple files to convert them all at once. Your images never leave your device during the process.
- 2
Select AVIF Format
Choose AVIF as your output format. Adjust the quality slider to control the balance between file size and visual quality. AVIF excels at maintaining quality even at lower settings thanks to the advanced AV1 codec. A quality level of 60-70% often produces results comparable to JPG at 85%.
- 3
Convert and Download
Click Apply to start the AVIF conversion. Use the before/after slider to compare the original and converted image. Download your AVIF file when satisfied with the result. Note that AVIF encoding takes slightly longer than WebP due to the more complex compression algorithm.
Why Convert to AVIF?
Best-in-Class Compression
AVIF delivers 50% smaller files than JPG and 20% smaller than WebP at the same visual quality. This is the most efficient image format available today, backed by the AV1 video codec used by Netflix and YouTube.
HDR and Wide Color Support
AVIF supports HDR10, 10-bit color depth, and wide color gamut (Rec. 2020). This means richer, more accurate colors for photography and professional imaging where color fidelity is critical.
Future-Proof Your Website
AVIF adoption is growing rapidly. By converting to AVIF now, you ensure your website delivers the smallest possible images to modern browsers while staying ahead of the competition in page speed and user experience.
100% Private Conversion
All conversion happens directly in your browser using Web Workers and the Canvas API. Your images are never uploaded to any server, ensuring complete privacy and data security throughout the entire process.
Common Scenarios
Maximizing Performance for E-Commerce Sites
Online stores with hundreds or thousands of product images can dramatically reduce page load times by serving AVIF to modern browsers. A product catalog that currently takes 3 seconds to load with JPG images might load in under 1.5 seconds with AVIF. Faster product pages directly correlate with higher conversion rates and increased revenue. Using the picture element with AVIF and JPG fallbacks ensures all visitors get the best possible experience.
Serving High-Quality Photography Portfolios
Photographers need to showcase their work in the highest quality possible while keeping load times reasonable. AVIF's superior compression means you can display stunning, high-resolution portfolio images that load quickly even on mobile connections. The format's support for 10-bit color depth and wide color gamut also ensures that the subtle gradients and rich tones in professional photography are faithfully preserved.
Optimizing Hero Images and Banners
Hero images and banner graphics are typically the largest assets on a web page, often exceeding 500 KB as JPG files. Converting these to AVIF can reduce their size to 200-250 KB without any visible quality loss. Since hero images are the first thing visitors see, making them load instantly creates a strong first impression and reduces the chance of visitors bouncing before the page fully renders.
Reducing Bandwidth for Image-Heavy Blogs
Blog posts with multiple embedded images can accumulate significant bandwidth costs, especially on high-traffic sites. Converting all blog images to AVIF reduces per-page bandwidth by 40-50% compared to JPG, which translates directly into lower hosting bills and faster page loads for readers. This is particularly valuable for blogs hosted on metered platforms like Vercel or Netlify where bandwidth limits apply.
Tips and Best Practices
Use Lower Quality Settings Than You Would for JPG
AVIF's advanced codec maintains visual quality at lower quality percentages than JPG or WebP. A quality setting of 50-65% for AVIF often looks as good as 80-85% for JPG. Experiment with lower settings to find the sweet spot for your specific images.
Always Provide JPG or WebP Fallbacks
While AVIF browser support is growing, some users on older Safari versions or legacy browsers cannot view AVIF files. Use the HTML picture element to serve AVIF to supported browsers while falling back to WebP or JPG for everyone else. This ensures universal compatibility.
Be Patient with Encoding Time
AVIF encoding is slower than WebP or JPG because the AV1 codec performs more complex calculations to achieve better compression. A single image might take a few seconds to convert. Image Shuttle uses Web Workers to keep the interface responsive, so you can continue browsing while conversion runs in the background.
Use AVIF for Hero Images and Large Photos
AVIF provides the most dramatic size savings on large, high-resolution photographs. For small icons and thumbnails, the difference between AVIF and WebP is minimal. Focus your AVIF conversion efforts on the largest images on your page where the bandwidth savings are most impactful.
Compared to Alternatives
Squoosh from Google was one of the first browser-based tools to support AVIF conversion, and it remains a powerful option for developers who want fine-grained control over encoding parameters like speed, chroma subsampling, and tile configuration. However, Squoosh processes one image at a time with a complex interface that requires technical knowledge to use effectively. Image Shuttle provides batch AVIF conversion with sensible defaults, making it accessible to designers, content creators, and anyone who needs to convert multiple images without understanding codec internals.
Cloud-based converters like CloudConvert and FreeConvert support AVIF output and handle many input formats. They are convenient for occasional use but upload your images to remote servers, which raises privacy concerns and introduces dependency on third-party infrastructure. Free tiers typically limit file sizes and the number of daily conversions. Image Shuttle processes everything locally using Web Workers, so there are no file size limits, no conversion limits, and no privacy risks. Your images never leave your browser.
The libavif command-line tool offers the fastest AVIF encoding and the most control over compression settings. It is the gold standard for server-side AVIF conversion in build pipelines and CI/CD workflows. However, it requires installation, command-line expertise, and is not practical for users who simply want to convert a few images quickly. Image Shuttle bridges this gap by providing high-quality AVIF conversion through an intuitive web interface. The visual before/after comparison is particularly valuable for AVIF since the format can achieve surprisingly good quality at very low quality settings that might seem too aggressive on paper.
Frequently Asked Questions
What is AVIF format?
AVIF (AV1 Image File Format) is a next-generation image format based on the AV1 video codec. It produces images 50% smaller than JPG and 20% smaller than WebP at comparable quality levels, with support for HDR, wide color gamut, transparency, and animation.
Is AVIF supported by all browsers?
AVIF is supported by Chrome (version 85+), Firefox (version 93+), Edge, and Safari (version 16.4+). Over 90% of global browser users can view AVIF images. For older browsers, provide WebP or JPG fallbacks using the picture element.
What is the difference between AVIF and WebP?
AVIF generally provides better compression than WebP, producing files 20% smaller at the same quality. However, WebP has broader browser support and faster encoding times. Both support transparency and animation. Use AVIF for maximum compression and WebP for broader compatibility.
Does AVIF support transparency?
Yes, AVIF supports 8-bit and 10-bit alpha channel transparency, similar to PNG but with much better compression. Ideal for logos, icons, and images requiring transparent backgrounds on modern websites.
Why is AVIF conversion slower?
AVIF encoding uses the AV1 codec which employs advanced compression techniques. Despite slower encoding, the resulting files are significantly smaller. Image Shuttle uses Web Workers to keep the interface responsive during conversion so the experience remains smooth.
Can I convert PNG to AVIF?
Yes! You can convert PNG, JPG, WebP, BMP, and other formats to AVIF. The conversion preserves transparency from PNG files while dramatically reducing file size through AVIF's superior compression algorithm.
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