{"id":1452,"date":"2026-08-23T15:13:00","date_gmt":"2026-08-23T19:13:00","guid":{"rendered":"https:\/\/www.xconvert.com\/blog\/?p=1452"},"modified":"2026-07-16T23:43:02","modified_gmt":"2026-07-17T03:43:02","slug":"convert-jpg-png-to-avif","status":"publish","type":"post","link":"https:\/\/www.xconvert.com\/blog\/convert-jpg-png-to-avif","title":{"rendered":"Convert JPG or PNG to AVIF: Smaller Than WebP? (2026 Guide)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Take one press photo and save it three ways at comparable visual quality: <strong>74.4 kB as a JPEG, 43 kB as a WebP \u2014 and 18.2 kB as an AVIF<\/strong>. That worked example (from web engineer Jake Archibald\u2019s published AVIF tests) is why \u201cis it even smaller than WebP?\u201d is the right question to ask before you convert your images. This guide gives you the verified numbers \u2014 checked against AOMedia, Netflix\u2019s published codec comparison, Google\u2019s own WebP study, MDN, and caniuse \u2014 plus the trade-offs the headlines skip: encode cost, the Edge and Safari support gaps, no progressive rendering, and what honestly happens when the source is an already-compressed JPG.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Quick answer:<\/strong> <strong>Yes \u2014 for photographic images, AVIF is usually the smallest of the three.<\/strong> Lossy AVIF runs around <strong>50% smaller than JPEG<\/strong> at similar visual quality, and on the same test set MDN reports a <strong>median ~50% saving for AVIF vs ~30% for WebP<\/strong>. Browser support is now <strong>~93% globally<\/strong> (Chrome since 2020, Firefox 2021, Safari 2022, Edge only since January 2024), so serve AVIF with a WebP\/JPEG fallback via <code>&lt;picture&gt;<\/code>. Convert with the <a href=\"https:\/\/www.xconvert.com\/convert-jpg-to-avif\">xconvert JPG to AVIF converter<\/a> \u2014 and keep your originals, because re-encoding an already-lossy JPG can\u2019t restore detail that\u2019s gone.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Jump to a section<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"#what\">What AVIF is \u2014 and why it compresses better<\/a><\/li><li><a href=\"#size\">How much smaller than JPG and WebP, really?<\/a><\/li><li><a href=\"#tradeoffs\">The trade-offs: support gaps, encode cost, no progressive render<\/a><\/li><li><a href=\"#expectations\">Converting existing JPGs and PNGs: honest expectations<\/a><\/li><li><a href=\"#tool\">Convert JPG or PNG to AVIF on xconvert<\/a><\/li><li><a href=\"#faq\">FAQ<\/a><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what\">What AVIF is \u2014 and why it compresses better<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>AVIF (AV1 Image File Format)<\/strong> is a still image stored the way a modern video codec stores a keyframe: AV1 intra-frame data in a HEIF container. It was finalized in <strong>2019<\/strong> by the <strong>Alliance for Open Media<\/strong> \u2014 the consortium behind the AV1 video codec, whose members include Google, Apple, Microsoft, Netflix, Amazon, and Mozilla \u2014 and published as a <strong>royalty-free<\/strong> format, which is why every major browser eventually shipped it (unlike patent-encumbered HEIC).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That video-codec ancestry is the whole story: JPEG\u2019s compression design dates to the early 1990s, while AVIF inherits three decades of advances in prediction and entropy coding. It also fixes JPEG\u2019s feature gaps \u2014 as Netflix\u2019s engineers put it, \u201cJPEG is restricted to 8-bit imagery and lacks support for alpha channel,\u201d whereas AVIF supports <strong>8-, 10-, and 12-bit color, HDR and wide color gamut, alpha transparency, and animation<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"size\">How much smaller than JPG and WebP, really?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Here are the numbers that survive a fact-check, with who measured them:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Format<\/th><th>Typical size at similar visual quality (photos)<\/th><th>Who says so<\/th><\/tr><\/thead><tbody><tr><td>JPEG<\/td><td>baseline<\/td><td>\u2014<\/td><\/tr><tr><td>WebP<\/td><td><strong>25\u201334% smaller than JPEG<\/strong> (SSIM-matched)<\/td><td>Google\u2019s own WebP compression study<\/td><\/tr><tr><td>AVIF<\/td><td><strong>~50% smaller than JPEG<\/strong>; \u201cless than half\u201d<\/td><td>MDN; AOMedia<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">For the AVIF-vs-WebP gap specifically, MDN reports a <strong>median ~50% compression for AVIF vs ~30% for WebP over the same set of JPEG-sourced images<\/strong> \u2014 AVIF keeps a meaningful lead, not a rounding-error one. Jake Archibald\u2019s worked example above (74.4 kB JPEG \u2192 43 kB WebP \u2192 18.2 kB AVIF) shows what that lead can look like on a detailed photo: in his words, \u201cthe WebP is almost half the size of JPEG, and AVIF is under half the size of WebP.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Netflix\u2019s published comparison<\/strong> is the methodical version of the same finding. In February 2020 their encoding team measured AVIF against a reference JPEG implementation across four quality metrics (SSIM, MS-SSIM, VIF, PSNR) on public datasets (Kodak, CLIC) and internal artwork \u2014 average bitrate savings at equal quality, not one cherry-picked image. Their side-by-sides also show the flip side: at <em>equal<\/em> file size (a 20,429-byte JPEG vs a 19,788-byte AVIF of the same source), the JPEG shows obvious blocking artifacts while the AVIF stays clean.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Two honest caveats. First, every figure above is <strong>content-dependent<\/strong>: detailed photographs benefit most; flat graphics and tiny thumbnails see smaller gains \u2014 occasionally none (see the <a href=\"#faq\">FAQ<\/a>). Second, these studies encode from clean sources; converting an already-compressed JPG still helps, but not by the full headline margin (<a href=\"#expectations\">more below<\/a>). For a deeper head-to-head, see <a href=\"https:\/\/www.xconvert.com\/blog\/avif-vs-webp-next-gen-image-formats\/\">AVIF vs WebP<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"tradeoffs\">The trade-offs: support gaps, encode cost, no progressive render<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Browser support is good now \u2014 but shallow historically.<\/strong> Per caniuse (July 2026), AVIF sits at roughly <strong>93% global support<\/strong> vs about <strong>96% for WebP<\/strong>, and JPEG\/PNG are effectively universal. The arrival dates matter more than the percentage:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Browser<\/th><th>AVIF support<\/th><th>WebP support<\/th><\/tr><\/thead><tbody><tr><td>Chrome<\/td><td>Since version 85 (August 2020)<\/td><td>Yes<\/td><\/tr><tr><td>Firefox<\/td><td>Since version 93 (October 2021)<\/td><td>Yes<\/td><\/tr><tr><td>Safari<\/td><td>Added in the 16.x cycle \u2014 iOS 16 (September 2022); full across macOS from Safari 16.4 (partial in 16.1\u201316.3)<\/td><td>Yes<\/td><\/tr><tr><td>Edge<\/td><td><strong>Only since version 121 (January 2024)<\/strong><\/td><td>Yes<\/td><\/tr><tr><td>Global (caniuse, July 2026)<\/td><td>~93%<\/td><td>~96%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Edge was the notable laggard \u2014 an Edge from 2023 simply couldn\u2019t render AVIF \u2014 and users on older iPhones or un-updated systems still can\u2019t. That remaining ~7% is why the standard advice (MDN\u2019s included) is to serve AVIF with a fallback rather than replace files outright:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The browser walks down the list and takes the first format it understands, so nobody sees a broken image.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>No progressive rendering.<\/strong> A big JPEG can paint early and sharpen over several passes; WebP renders top-to-bottom. AVIF is all-or-nothing \u2014 as MDN states, \u201cAVIF does not support progressive rendering, so files must be fully downloaded before they can be displayed.\u201d In Archibald\u2019s slow-connection demo, the JPEG (249 kB) <em>felt<\/em> faster than the AVIF (96 kB) purely because it showed something sooner. The much smaller file usually cancels this out \u2014 MDN notes the real-world impact is often minimal \u2014 but for very large hero images on slow connections it\u2019s a genuine consideration.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Encoding is compute-heavy.<\/strong> AVIF\u2019s efficiency comes from the encoder working much harder. In Archibald\u2019s 2020 tests, maximum-effort encodes took minutes per image; encoders have improved substantially since, but AVIF remains slower to produce than JPEG or WebP. Converting on xconvert sidesteps this \u2014 the encode runs on our servers, not your laptop \u2014 though a big batch will still take longer per image than a WebP run would.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"expectations\">Converting existing JPGs and PNGs: honest expectations<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>From a JPG:<\/strong> your source is <em>already lossy<\/em>. Converting to AVIF re-encodes it \u2014 a second generation of loss \u2014 and no format can restore detail the original JPEG compression discarded. What AVIF <em>can<\/em> do is represent what\u2019s left far more efficiently, so a JPG\u2192AVIF conversion at a high-quality setting typically still yields a much smaller file that looks the same. The practical rules: convert <strong>once<\/strong> from the best copy you have, skip repeated format round-trips, don\u2019t expect the full ~50% research figure that comes from pristine sources, and <strong>keep the original<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>From a PNG:<\/strong> the cleaner starting point \u2014 PNG is lossless, so the encoder gets undamaged input. For photos and screenshots stored as PNG the size drop is usually dramatic, and AVIF\u2019s alpha channel means <strong>transparency survives the conversion<\/strong>. One sharp exception: pixel-perfect graphics. AVIF\u2019s headline wins are <em>lossy<\/em>; in Archibald\u2019s flat-illustration test, <strong>lossless AVIF came out at 41.7 kB vs 16.3 kB for the equivalent PNG and 12.9 kB for lossless WebP<\/strong>. For logos, icons, and UI art that must stay pixel-identical, keep the optimized PNG or compare against WebP \u2014 see <a href=\"https:\/\/www.xconvert.com\/blog\/convert-png-to-webp\/\">convert PNG to WebP<\/a> for when that\u2019s the smarter swap.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Either way<\/strong>, treat AVIF as a <em>delivery<\/em> format: serve it to browsers, archive your originals.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"tool\">Convert JPG or PNG to AVIF on xconvert<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/www.xconvert.com\/convert-jpg-to-avif\">xconvert JPG to AVIF converter<\/a> runs the encode server-side, so a heavy AVIF encode doesn\u2019t tie up your machine (there\u2019s a matching <a href=\"https:\/\/www.xconvert.com\/convert-png-to-avif\">PNG to AVIF converter<\/a> for PNG sources \u2014 same controls):<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Open <a href=\"https:\/\/www.xconvert.com\/convert-jpg-to-avif\">xconvert.com\/convert-jpg-to-avif<\/a> and click <strong>Upload<\/strong> \u2014 add files from your computer, Google Drive, or Dropbox (or drag and drop them onto the page).<\/li><li>Optionally open <strong>Advanced Options<\/strong> (the gear icon). The defaults are tuned for the best results, so this is only needed when you want control.<\/li><li>Pick a <strong>Quality Preset<\/strong> \u2014 the default is <strong>Very High (Recommended)<\/strong>; step down to High\/Medium for smaller files, or choose <strong>Specific file size<\/strong> to target an exact output size.<\/li><li>If the image is larger than it will ever be displayed, use the resolution controls \u2014 <strong>Resolution Percentage<\/strong> (default \u201cKeep original\u201d), <strong>Preset Resolutions<\/strong>, or exact <strong>Width\/Height<\/strong> (aspect ratio is kept).<\/li><li>Click <strong>Convert<\/strong>, then download your <code>.avif<\/code> file when processing finishes.<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Your image uploads over an encrypted connection, is processed on our servers and deleted automatically a few hours later \u2014 nothing stays around.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">FAQ<\/h2>\n\n\n\n<h5 class=\"wp-block-heading\">Is AVIF really smaller than WebP?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Usually, yes \u2014 especially for photographs.<\/strong> On the same JPEG-sourced test set, MDN reports a median saving of about <strong>50% for AVIF vs 30% for WebP<\/strong>, and published worked examples show AVIF at under half the WebP size for detailed photos. The gap narrows on flat graphics and small images, so for any specific file the only definitive answer is to encode both and compare.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Does converting JPG to AVIF lose quality?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Technically yes \u2014 it\u2019s a lossy re-encode \u2014 but at a high-quality preset the difference is typically invisible.<\/strong> What conversion cannot do is bring back detail the original JPEG compression already threw away. Convert once from your best copy, avoid repeated format round-trips, and keep the original file.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Should I convert PNG to AVIF or to WebP?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>For photos and screenshots, AVIF generally produces the smaller file; for pixel-perfect graphics, test before switching.<\/strong> AVIF\u2019s lossless mode can come out <em>larger<\/em> than an optimized PNG or lossless WebP (41.7 kB vs 16.3\/12.9 kB in one published flat-illustration test). WebP also buys you slightly wider support (~96% vs ~93%).<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Which browsers support AVIF in 2026?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>About 93% of global browsers, per caniuse:<\/strong> Chrome since version 85 (2020), Firefox since 93 (2021), Safari since the 16.x cycle (iOS 16 in 2022; full macOS coverage from 16.4), and Edge only since version 121 (January 2024). Older browsers and un-updated devices are the gap \u2014 which is why a <code>&lt;picture&gt;<\/code> fallback to WebP or JPEG remains best practice.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Why did my AVIF come out bigger than the original?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">It can happen with <strong>small, already heavily-optimized images and simple flat graphics<\/strong> \u2014 an aggressively compressed JPG has little redundancy left to squeeze, so at a very high quality setting the AVIF can match or exceed the source size. Try a lower <strong>Quality Preset<\/strong> or the <strong>Specific file size<\/strong> option; if the original is still smaller, keep the original. AVIF isn\u2019t a guaranteed win on every file.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Does AVIF keep PNG transparency?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Yes.<\/strong> AVIF supports a full alpha channel, so transparent PNGs convert with their transparency intact \u2014 unlike JPEG, which has no alpha support at all and flattens transparent areas onto a background color.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Can I open an AVIF file outside a browser?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Every current major browser displays AVIF, so the quickest viewer is dragging the file into a browser tab. Support in desktop apps and older OS image viewers is more uneven \u2014 it varies by app and OS version \u2014 so if a recipient can\u2019t open one, send a JPG\/PNG copy instead.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sources<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Last verified 2026-07-15.<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/caniuse.com\/avif\">caniuse \u2014 AVIF image format<\/a> \u2014 browser versions (Chrome 85, Firefox 93, Safari 16.x with 16.1\u201316.3 partial, Edge 121) and ~93% global support.<\/li><li><a href=\"https:\/\/caniuse.com\/webp\">caniuse \u2014 WebP image format<\/a> \u2014 ~96% global WebP support across all current major browsers.<\/li><li><a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/Media\/Guides\/Formats\/Image_types\">MDN \u2014 Image file type and format guide<\/a> \u2014 AVIF ~50% smaller than JPEG; median 50% vs 30% AVIF-vs-WebP comparison; bit depth\/HDR\/alpha feature set; \u201cAVIF does not support progressive rendering\u201d; fallback recommendation.<\/li><li><a href=\"https:\/\/aomedia.org\/blog%20posts\/avif-meet-the-next-level-image-file-format\/\">AOMedia \u2014 AVIF: Meet the Next Level Image File Format<\/a> \u2014 format owner: \u201cless than half\u201d of JPEG size, 12-bit color depth, royalty-free, first released 2019.<\/li><li><a href=\"https:\/\/netflixtechblog.com\/avif-for-next-generation-image-coding-b1d75675fe4\">Netflix Tech Blog \u2014 AVIF for Next-Generation Image Coding<\/a> (Feb 2020) \u2014 BD-rate comparison vs a reference JPEG baseline over SSIM\/MS-SSIM\/VIF\/PSNR on Kodak\/CLIC\/internal datasets; equal-file-size visual comparisons; JPEG\u2019s 8-bit\/no-alpha limits.<\/li><li><a href=\"https:\/\/developers.google.com\/speed\/webp\/docs\/webp_study\">Google \u2014 WebP Compression Study<\/a> \u2014 WebP 25\u201334% smaller than JPEG at equal SSIM.<\/li><li><a href=\"https:\/\/jakearchibald.com\/2020\/avif-has-landed\/\">Jake Archibald \u2014 AVIF has landed<\/a> (Sept 2020) \u2014 worked examples (F1 photo 74.4\/43\/18.2 kB; lossless illustration 16.3\/12.9\/41.7 kB; progressive-render demo 249\/153\/96 kB), all-or-nothing AVIF rendering, encode-effort timings.<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>AVIF is ~50% smaller than JPEG and usually beats WebP. Verified numbers, browser support, trade-offs, and how to convert JPG or PNG to AVIF online.<\/p>\n","protected":false},"author":4,"featured_media":1451,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,14],"tags":[],"class_list":["post-1452","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-how-to-guides","category-tools"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Convert JPG or PNG to AVIF: Smaller Than WebP? (2026 Guide)<\/title>\n<meta name=\"description\" content=\"AVIF is ~50% smaller than JPEG and usually beats WebP. 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