The Complete Guide to AVIF Image Format, Benefits, Converters and Real-World Use Cases

The Complete Guide to AVIF Image format

AVIF is the newest image format built for the web. It produces smaller files than JPG, PNG, and WebP while keeping visual quality high. If you care about website speed, image quality, or bandwidth costs, you should understand what AVIF is and how to use it.

This guide covers everything from the basics of the AVIF file format to real-world comparisons with older formats. You will learn when to use AVIF, when to avoid it, and how to convert images to and from AVIF using free browser-based tools.

What Is an AVIF File?

AVIF stands for AV1 Image File Format. It is a modern image format based on the AV1 video codec, developed by the Alliance for Open Media (AOMedia). The format was released in 2019 and has been adopted by browsers, image optimization services, and content delivery networks at a speed that no previous image format has matched.

History of AVIF

The AV1 codec was originally designed for video streaming. It was built to replace H.264 and VP9, the codecs that power YouTube and Netflix. The same compression technology that makes AV1 video efficient also works for still images. In 2019, the AVIF specification was finalized, and by 2020, Chrome and Firefox had added support. Safari joined in 2022. By 2025, AVIF is the standard recommendation for web images from Google, Cloudflare, and every major platform.

How AVIF Works

AVIF uses a more advanced compression algorithm than JPG, PNG, or WebP. The codec removes redundant visual data more aggressively while preserving the details the human eye actually notices. The result is a file that is 30% to 50% smaller than JPG at the same visual quality, and up to 80% smaller than PNG for lossless images.

The technology behind AVIF is the same as the technology behind AV1 video. It uses intra-frame coding, transform coding, and entropy coding to minimize file size. For non-technical users, the only thing that matters is the result: AVIF files are smaller and look better than any alternative.

Advantages Over Older Formats

AVIF combines the best features of all previous image formats. It supports lossy compression like JPG, which produces small files. It supports lossless compression like PNG, which preserves every pixel. It supports transparency like PNG, with better compression. It supports HDR (high dynamic range) color, which no other web format handles as well. And it supports animation, making it a replacement for GIF and WebP animated images.

The single biggest advantage is file size. A 1 MB JPG image at 85% quality is roughly 500 KB as AVIF at the same visual quality. For a website with 50 images, the difference is 50 MB versus 25 MB. The page loads twice as fast. The bandwidth cost is cut in half. The user experience is better.

Why AVIF Is Growing So Fast

Smaller File Sizes

The internet runs on images. Every website, every app, every social media feed is filled with pictures. The total size of images on a typical web page is 60% to 80% of the total page weight. Reducing image size is the most effective way to make the web faster.

AVIF is the smallest image format available. Compared to JPG, AVIF files are 25% to 35% smaller. Compared to PNG, they are 70% to 80% smaller. Compared to WebP, they are 20% to 30% smaller. No other format comes close. For a website owner, this means faster pages, lower hosting costs, and happier users.

Better Compression

Compression is the process of reducing file size by removing redundant data. JPG uses compression from 1992. PNG uses compression from 1996. WebP uses compression from 2010. AVIF uses compression from 2019. The algorithm is newer, more efficient, and better optimized for the visual characteristics of modern displays.

For text-heavy images, AVIF is dramatically better than JPG. Small text stays sharp. Edges stay clean. Charts and diagrams retain their detail. For photographs, the difference is more subtle but still visible. Skin tones are smoother. Gradients are cleaner. Noise is better controlled.

Improved Website Performance

Website performance is measured in milliseconds. A slow page loses visitors. Google uses page speed as a ranking factor. Users abandon pages that take more than 3 seconds to load. Images are the primary cause of slow pages.

Switching to AVIF is the single most impactful change you can make to your website’s performance. It is more effective than lazy loading, more effective than CDN optimization, and more effective than server-side caching. The reason is simple: smaller images load faster. No optimization technique can make a 2 MB image load as fast as a 500 KB image. AVIF makes the image smaller.

Core Web Vitals Benefits

Core Web Vitals are the metrics Google uses to measure user experience. The three main metrics are Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS). Of these, LCP is directly affected by image size.

LCP measures how long the largest visible element on the page takes to load. For most pages, the largest element is an image. A smaller image loads faster, which improves LCP. A better LCP score means better search rankings and better user engagement. AVIF is the most effective way to improve LCP because it reduces the size of the image that defines the metric.

SEO Advantages of Faster Loading Images

Google has stated that page speed is a ranking factor. Faster pages rank higher. Slower pages rank lower. The mechanism is simple: Google wants to send users to pages that load quickly. If your page is slow, Google sends the user to a competitor.

AVIF improves every aspect of page speed. Time to First Byte (TTFB) is unaffected, but First Contentful Paint (FCP), Largest Contentful Paint (LCP), and Time to Interactive (TTI) all improve. For image-heavy pages, the improvement can be 50% or more. This is not a marginal gain. It is a competitive advantage.

AVIF vs JPG

JPG has been the standard web image format for 30 years. It is supported by every device, every browser, and every piece of software. The problem is that the compression is outdated. A JPG from 1992 uses the same algorithm as a JPG from 2025. AVIF is newer, better, and more efficient.

For most use cases, AVIF is the better choice. The only reason to use JPG is if you need to send the image to someone using very old software that does not support AVIF. For websites, blogs, social media, and modern applications, AVIF is superior in every way.

If you have JPG images you want to convert to AVIF, use the JPG to AVIF Converter. It runs in your browser, so nothing is uploaded. The output is a smaller, higher-quality image ready for the web.

AVIF vs PNG

PNG is the standard for lossless images and transparency. The problem is file size. A PNG with transparency is often 3 to 5 times larger than the same image as AVIF. For a website logo, the difference is 50 KB versus 10 KB. For a full-page screenshot, the difference is 2 MB versus 400 KB.

PNG is still the right choice for editing. If you need to open the image in Photoshop, modify it, and save it again, PNG preserves every pixel. AVIF is the right choice for publishing. Once the image is finalized, convert it to AVIF and the file will be smaller without any visible quality loss.

If you have PNG images with transparency you want to optimize for the web, use the PNG to AVIF Converter. It preserves transparency while reducing file size by 70% or more.

AVIF vs WebP

WebP was the previous best format. Google developed it in 2010 to replace JPG and PNG. It succeeded. Most modern websites use WebP. But AVIF is the next step. The compression is better. The quality is higher. The file sizes are smaller. And the browser support is now the same.

WebP is still a safe choice. If you need a format that works in slightly older software or desktop applications, WebP has broader support. But for the web, AVIF is the current standard. Google, Cloudflare, and every major platform are moving toward AVIF. If you are choosing a format for a new project, AVIF is the right choice.

Browser and Device Support

Chrome

Chrome has supported AVIF since version 85, released in August 2020. This includes Chrome on desktop, Chrome on Android, and Chromium-based browsers like Brave, Vivaldi, and Opera. If your audience uses Chrome, they can see AVIF images.

Edge

Microsoft Edge supports AVIF since version 121, released in January 2024. Earlier versions did not support AVIF. If your audience includes Windows users on older Edge versions, they may not see AVIF images. For most users, Edge is now up to date and supports AVIF.

Firefox

Firefox has supported AVIF since version 93, released in October 2021. This includes Firefox on desktop and Firefox on Android. Mozilla was an early adopter of AVIF, and the support is stable and complete.

Safari

Safari supports AVIF since version 16, released in September 2022. This includes Safari on macOS and Safari on iOS. The support is full and stable. Every iPhone and iPad running iOS 16 or later can display AVIF images natively.

Mobile Support

All modern mobile browsers support AVIF. Chrome on Android, Safari on iOS, Firefox on Android, and Samsung Internet all display AVIF images. The only exceptions are very old devices running outdated browsers. For any device from 2022 or later, AVIF works.

Common Compatibility Issues

The main compatibility issue is desktop software. Microsoft Paint on Windows 10 does not open AVIF files. Some versions of Photoshop require a plugin. Older image viewers and editors may not support AVIF. For web use, this is not a problem. For editing and archival, you may need to convert AVIF back to PNG or JPG.

How to Convert Images to AVIF

Convert JPG to AVIF

JPG is the most common image format. Every camera, phone, and website produces JPG images. But JPG is old. The compression is inefficient. The files are larger than necessary. Converting JPG to AVIF reduces file size by 30% to 50% while keeping the same visual quality.

The most common reason to convert JPG to AVIF is website optimization. If you run a blog, an e-commerce site, or a portfolio, switching your images to AVIF will make your pages load faster. The improvement is immediate and visible. A page that took 4 seconds to load now takes 2 seconds. The user experience is better. The search rankings improve.

To convert JPG to AVIF, use the JPG to AVIF Converter. It runs in your browser. Nothing is uploaded. Drag your JPG files, convert them, and download the AVIF output. The process takes seconds per image.

Convert PNG to AVIF

PNG is the standard for images that need transparency or lossless quality. Logos, icons, screenshots, and graphics are often saved as PNG. The problem is the file size. A PNG is 3 to 5 times larger than the same image as AVIF.

Converting PNG to AVIF is the best way to optimize web graphics. The transparency is preserved. The quality is preserved. The file is smaller. For a website with 20 PNG icons, the difference is 500 KB versus 100 KB. The page loads faster. The bandwidth is reduced. The user experience is better.

To convert PNG to AVIF, use the PNG to AVIF Converter. It handles transparency, preserves quality, and produces the smallest possible file. Everything runs in your browser.

Convert Word Documents to AVIF

Word documents are not images. They are documents. But sometimes you need to turn a document page into an image. Bloggers embed document pages in posts. Designers include document previews in portfolios. Technical writers add screenshots to documentation. The standard approach is to take a screenshot or export the page as a PDF, then convert to an image. AVIF is the best format for the final image.

Converting Word to AVIF gives you the smallest possible file with the highest possible quality. A document page as PNG is 1 to 3 MB. The same page as AVIF is 200 to 500 KB. The text is sharp. The charts are clear. The file is small enough to load instantly on any connection.

To convert Word documents to AVIF, use the Word to AVIF Converter. It renders each page in your browser using Mammoth.js and html2canvas. The output is one AVIF image per page, with a ZIP archive for multi-page documents. Nothing is uploaded. Nothing is stored. The conversion is private and instant.

How to Convert AVIF Back to JPG

Sometimes you need to convert AVIF back to JPG. The most common reason is compatibility. You need to send the image to someone using old software. You need to upload it to a platform that does not support AVIF. You need to edit it in an application that does not recognize the format.

JPG is the universal fallback. Every device, every browser, and every application supports JPG. If you have an AVIF image and need to share it with someone who cannot open it, convert it to JPG. The file will be larger, but it will work everywhere.

To convert AVIF to JPG, use the AVIF to JPG Converter. It runs in your browser. Nothing is uploaded. The output is a standard JPG file that works on any device.

Frequently Asked Questions

What is an AVIF file?

AVIF is an image file format based on the AV1 video codec. It is designed for maximum compression with minimum quality loss. AVIF files are smaller than JPG, PNG, and WebP at the same visual quality. The format is supported by all modern browsers.

Is AVIF better than JPG?

Yes, for the web. AVIF produces smaller files at the same or better quality. Text and edges stay sharper. Compression is more efficient. The only reason to use JPG is if you need to send the image to someone using very old software.

Is AVIF better than WebP?

Yes, for maximum compression. AVIF is 20% to 30% smaller than WebP at the same quality. The browser support is the same. The only reason to choose WebP is if you need slightly broader compatibility with desktop software.

How do I open AVIF files?

Modern browsers open AVIF natively. On desktop, Chrome, Firefox, Safari, and Edge all display AVIF. For editing, use GIMP, Photoshop (with a plugin), or an online converter. On Windows 10, the Photos app supports AVIF. On macOS, Preview supports AVIF in recent versions.

Why are AVIF files smaller?

AVIF uses a more advanced compression algorithm. The AV1 codec removes redundant data more aggressively while preserving the visual quality the human eye can perceive. The result is a file that is smaller but looks the same.

Can iPhone open AVIF?

Yes. iPhones running iOS 16 or later can open AVIF images natively in Safari, Photos, and other apps. Earlier iOS versions do not support AVIF. For most iPhone users, the support is complete.

Can Windows open AVIF?

Windows 10 and 11 support AVIF in File Explorer and the Photos app. Edge and Chrome on Windows display AVIF natively. Older software like Microsoft Paint may not support AVIF. For web use, Windows handles AVIF perfectly. For editing, you may need GIMP or Photoshop.

How do I convert AVIF to JPG?

Use the AVIF to JPG Converter. It runs in your browser. Nothing is uploaded. The output is a standard JPG file that works on any device.

How do I convert JPG to AVIF?

Use the JPG to AVIF Converter. It runs in your browser. Nothing is uploaded. The output is a smaller, higher-quality AVIF image ready for the web.

Does AVIF support transparency?

Yes. AVIF supports transparent backgrounds, just like PNG. The transparency is compressed more efficiently than PNG, so the file is smaller. For logos, icons, and graphics with transparent backgrounds, AVIF is the best format.

Is AVIF good for websites?

AVIF is the best image format for websites. It is smaller than JPG, PNG, and WebP. It loads faster. It improves Core Web Vitals. It is supported by every modern browser. Google recommends AVIF for web images. If you care about page speed, AVIF is the format you should use.

Does Google support AVIF images?

Yes. Google uses AVIF on its own properties. Google Search, Google Images, and Google Photos all support AVIF. Google recommends AVIF in its PageSpeed Insights tool. Google has stated that AVIF is the preferred format for web images.

Is AVIF the future of image formats?

Yes. AVIF is the current state of the art. Every major platform is moving toward AVIF. Browsers support it. CDNs support it. WordPress supports it. The format is smaller, better, and faster than every alternative. It is the future of web images.

Can AVIF be animated?

Yes. AVIF supports animation, making it a replacement for GIF and WebP animated images. AVIF animations are smaller than GIF animations and higher quality than WebP animations. The support is currently limited to some browsers and platforms, but it is growing.

When should I not use AVIF?

Do not use AVIF when you need universal compatibility with very old software. Do not use AVIF for email clients that do not support it. Do not use AVIF when you need to edit the image repeatedly in software that does not support the format. For archival, editing, and sharing with users on outdated systems, PNG or JPG is the safer choice. For everything else, AVIF is better.

Final Verdict

When to Use AVIF

Use AVIF for every image on your website. Use it for blog posts, product pages, portfolios, documentation, and social media. Use it for photographs, graphics, screenshots, and logos. Use it when you want the smallest file with the highest quality. Use it when you care about page speed, bandwidth, or user experience.

Specifically, use AVIF when:

• You are publishing images on the web
• You want the fastest possible page load
• You need to reduce bandwidth costs
• You want better Core Web Vitals scores
• You need transparency with small file sizes
• You are optimizing images for SEO

When Not to Use AVIF

Do not use AVIF when you need to share images with users on very old software. Do not use AVIF for email marketing. Do not use AVIF when you need to edit the image in software that does not support the format. For these cases, JPG or PNG is the safer fallback.

Specifically, do not use AVIF when:

• You need to send the image to someone using old software
• You are embedding images in an email
• You need to edit the image in Photoshop without a plugin
• You are archiving the image for long-term storage
• The target platform does not support AVIF

Summary of Best Practices

AVIF is the best image format for the web. It is smaller than JPG, PNG, and WebP. It is supported by every modern browser. It improves page speed, Core Web Vitals, and SEO. The only limitation is compatibility with very old software.

Best practices for using AVIF:

• Convert all web images to AVIF
• Keep a JPG fallback for older browsers using the picture element
• Use AVIF for new projects from the start
• Convert existing JPG and PNG images to AVIF using the JPG to AVIF Converter and PNG to AVIF Converter
• Convert Word documents to AVIF for web publishing using the Word to AVIF Converter
• Convert AVIF back to JPG when you need universal compatibility using the AVIF to JPG Converter

AVIF is not a niche format. It is the standard. Google uses it. Cloudflare serves it. WordPress supports it. Every modern browser displays it. If you are optimizing images for the web, AVIF is the format you should use. The tools are free. The conversion is instant. The results are better. For even more image tools visit our image tools hub.