AVIF now has over 95% global browser support and consistently delivers 30 to 50 percent smaller files than JPG at the same visual quality. That makes the JPG vs AVIF question less about “can I use it” and more about “what does it cost me to keep shipping JPG.”
JPG has been the default photo format since 1992. It’s universally compatible, widely understood, and still a safe fallback. AVIF is the newer AV1-based format built for the web, engineered for smaller files, better quality, transparency, animation, and HDR.
In this detailed JPG vs AVIF comparison, you’ll learn how the two formats differ in quality, file size, transparency, and browser support, how to convert JPG to AVIF in seconds, and how to pick the right image format for your WordPress or Elementor website.
What is JPG?
JPG (also written as JPEG) stands for Joint Photographic Experts Group and was first introduced in 1992. It is one of the most common image formats on the web, used for photos, product images, and any visual with a wide range of colors and gradients.
JPG uses lossy compression, which reduces file size by permanently discarding some image data. That trade-off is why JPG files stay manageable even for detailed photographs, but it’s also why heavily compressed JPGs show visible artifacts around sharp edges and text.
There are two broad types of image compression:
- Lossy: Shrinks files by removing data permanently. The goal is the smallest file size at an acceptable visual quality.
- Lossless: Shrinks files without discarding any data. Every pixel is restored exactly when the file is decompressed.
JPG is supported by virtually every device, browser, and image editor made in the last 30 years, which is the main reason it remains the default format for sharing and printing photos.
What is AVIF?
AVIF stands for AV1 Image File Format. It’s a next-generation image format that applies the AV1 video codec to still images and stores them in the HEIF (High-Efficiency Image Format) container.
AVIF was developed by the Alliance for Open Media, the same group behind the AV1 video codec, with backing from Google, Netflix, Mozilla, Microsoft, and others. The format is royalty-free and open-source, so you can use or modify it without paying licensing fees.
The main advantage is efficiency. AVIF typically produces images with comparable or better quality than JPEG or PNG at roughly half the file size. Smaller files mean faster page loads, lower bandwidth bills, and better Core Web Vitals scores, all of which help SEO.
AVIF also supports features JPG never could: transparency (like PNG), animation (like GIF), HDR (High Dynamic Range), and wide color gamuts.
WordPress has supported AVIF uploads natively since version 6.5 (released April 2024). You can now upload and serve AVIF images from the Media Library just like JPEG or PNG.
Browser support is no longer the blocker it once was. Chrome, Firefox, Edge, Safari, and Opera all support AVIF today, and global support sits above 95 percent according to caniuse.com.
JPG vs AVIF: Technical Comparison
Here’s a quick side-by-side comparison of JPG and AVIF before we break down each factor in detail:
| Feature | JPG | AVIF |
|---|---|---|
| Image Quality | Good, degrades noticeably with compression | Excellent, holds quality even at high compression |
| File Size | Larger, especially for high-quality photos | 30 to 50 percent smaller at comparable quality |
| Compression | Lossy only, can produce visible artifacts | AV1 codec, lossy and lossless, far fewer artifacts |
| Transparency | Not supported | Full alpha-channel transparency, like PNG |
| Animation | Not supported | Supported, like GIF or APNG |
| Color Range | 8-bit, limited gamut | Up to 12-bit, HDR and wide color gamut |
| Loading Speed | Slower due to larger file size | Faster, helps Core Web Vitals |
| Browser Support | Universal, every browser | All major browsers (Chrome, Firefox, Edge, Safari, Opera), 95%+ globally |
| Licensing | Free to use | Royalty-free, open-source |
1. File Size and Compression
File size is where AVIF wins decisively. Because it uses the AV1 video codec, AVIF applies far smarter compression than JPG’s older DCT-based approach. At equivalent perceived quality, AVIF files are typically 30 to 50 percent smaller than JPG, and typically 20 to 30 percent smaller than WebP depending on the image.
AVIF: 943 KB
JPG relies on lossy compression that discards image data to reduce file size. At low compression it looks fine, but push the quality setting too low and you start seeing blockiness, banding around skies, and halos around text or hard edges.
JPG: 1.13 MB
The exact size difference depends on the image content, resolution, and quality setting you choose. Flat or simple images see smaller gains, while complex photographs with gradients and texture see the biggest savings from AVIF.
Read Further: JPG Vs PNG: Which Format Improves Site Speed?
2. Transparency
JPG does not support transparency. If you save a transparent PNG as a JPG, the transparent pixels get filled with a solid color (usually white) and you lose the ability to layer the image cleanly over any background.
AVIF fully supports transparency through an alpha channel, the same way PNG does. That means you can use AVIF for logos, product cutouts, UI elements, and hero images with transparent backgrounds without falling back to a heavier PNG.
What is an Alpha Channel?
An alpha channel is an additional channel in a digital image that stores opacity information for each pixel. It determines how transparent or opaque a pixel should be when the image is displayed or composited over another image or background.
3. Image Quality
AVIF delivers higher perceived quality at smaller file sizes than JPG, especially at aggressive compression settings. The advantage comes from the AV1 codec’s modern tools: larger block sizes, better prediction, and improved handling of gradients and smooth surfaces.
JPG has been around for over three decades and its compression math is showing its age. It still produces acceptable results for everyday photography, but it struggles with gradients (hello, banded skies), fine text, and line art.
Final quality always depends on the source image, the resolution, the amount of compression, and the complexity of the scene. As a general rule though, AVIF produces cleaner, more detailed results than JPG at the same file size, with far fewer visible artifacts.
Keep Reading: How to Fix Blurry Images in Elementor [SOLVED]
4. Real-Life Use Cases of AVIF
Here’s where AVIF pays off the most in day-to-day use:
- Websites and Blogs: Smaller files mean faster pages, better Core Web Vitals, and an SEO bump, especially on image-heavy blog posts, editorial sites, and landing pages.
- E-Commerce Sites: Product images are the silent salespeople of an online store. AVIF lets you serve sharper, larger product photos without inflating page weight or hurting mobile load times.
- Photography Portfolios: HDR support and wide color gamut make AVIF ideal for photographers who want vibrant, high-fidelity galleries that still load quickly.
- Digital Art and Graphic Design: Designers can publish detailed artwork, UI concepts, and animated illustrations at a fraction of the file size of PNG or GIF.
JPEG XL vs AVIF
JPEG XL (or JXL) is another modern image format often mentioned alongside AVIF. It supports both lossy and lossless compression, progressive decoding, and extremely high bit depths, so it works well for photography, print, and scientific imaging.
In raw compression efficiency at high quality, JPEG XL often edges out AVIF, which makes it appealing for archival and high-fidelity use cases.
One standout feature of JPEG XL is reversible JPEG transcoding. An existing JPEG can be converted to JPEG XL (shrinking it around 20 percent) and then perfectly reconstructed back to the original JPEG bit-for-bit. That’s a powerful migration path that AVIF doesn’t offer.
JPEG XL can also encode faster than AVIF and supports progressive loading, where lower-quality previews render before the full image is downloaded.
The catch is browser support. As of 2026, JPEG XL ships natively in Safari 17+ (macOS Sonoma and iOS 17), but in Chrome and Firefox it sits behind experimental flags and is not on by default. The Chromium team reversed its earlier removal in late 2025 and merged decoder support back in, yet it remains flag-gated in stable Chrome. For public-facing websites today, AVIF is still the safer pick.
Suggested Reading: JPG vs JPEG Comparison [Everything You Need To Know]
How to Convert Images from JPG to AVIF
Converting JPG images to AVIF is straightforward. You have three main options: an online converter, a desktop tool, or a WordPress plugin that does it automatically.
Use an Online Image Converter
The fastest option for one-off conversions is a browser-based tool like Convertio, Squoosh (made by Google), or CloudConvert. None of them require an account for basic use.
Here’s how to convert JPG to AVIF with Convertio:
Step 1. Choose the JPG file you want to convert.
Step 2. Select AVIF as the output format.
Step 3. Click Convert, wait a few seconds, and download the finished AVIF file. For batch conversions or automated pipelines, a desktop tool like Squoosh CLI or ImageMagick is a better fit.
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Which Image Format Should You Choose?
Choosing the right image format is a real performance decision. Here’s a simple way to think about it:
- Pick JPG when you need absolute universal compatibility, when you’re printing, or when you’re exporting from older tools that don’t yet handle AVIF well.
- Pick AVIF when you care about page speed, Core Web Vitals, mobile bandwidth, or image quality at small file sizes. For most modern websites, AVIF is now the better default.
- Serve both with the HTML
<picture>element or a WordPress plugin that negotiates the right format per browser. This gives you AVIF for modern browsers and JPG as a fallback, with zero risk of broken images.
AVIF is no longer an emerging format. With over 95 percent global browser support, native WordPress integration since 6.5, and meaningful speed gains, it’s a practical upgrade for most sites.
Great images are only half the story, though. The design around them matters just as much. If you’re building with Elementor, The Plus Addons for Elementor gives you 120+ widgets and extensions, including advanced image galleries, lightboxes, sliders, and lazy-load helpers, so you can show off those AVIF-optimized visuals without dragging down load times.
It’s a single all-in-one plugin that can replace five or six single-purpose plugins, which also helps keep your site lean and fast.
Check out the Complete List of 120+ Widgets and Extensions here. Start building your dream website without coding!
Keep Reading: 25+ Ways to Speed Up Elementor Website [Guaranteed Results]
