Why convert images to AVIF?
AVIF (AV1 Image File Format) is the most efficient image format available in modern browsers. Built on the AV1 video codec developed by the Alliance for Open Media, AVIF achieves compression ratios that consistently beat both JPG and WEBP — typically 40–55% smaller than JPG and 30–50% smaller than WEBP at equivalent visual quality. It handles both photographic images and graphics with transparency equally well, making it a true single replacement for both JPG and PNG in web contexts. For any website serving images to modern browsers, switching to AVIF is the highest-impact format change available today.
Supported input formats
| Format | Common source | Typical size saving vs AVIF at 80% |
|---|---|---|
| JPG | Photos, camera output, web images | 40–55% smaller |
| PNG | Screenshots, logos, design exports | 60–80% smaller for photos; 30–50% for graphics |
| WEBP | Modern web images, CMS exports | 20–40% smaller |
| GIF | Memes, simple graphics | Varies; first frame only, animation not preserved |
| BMP | Windows screenshots, legacy software | 20–50× — BMP is completely uncompressed |
| SVG | Vector icons, illustrations | Varies; rasterised at natural size |
How to convert any image to AVIF
- Drop your files — drag onto the upload zone, click to browse, or paste from clipboard. Mix formats freely; up to 30 files at once.
- Set quality — 80% is the default and visually indistinguishable from the source for most images. Lower for maximum compression; raise for archival fidelity.
- Click Convert — all files convert in parallel in your browser using the Canvas API. Nothing is sent to a server. Expect a few seconds per large image as AVIF encoding is computationally intensive.
- Download — grab files individually, or download all at once as a ZIP.
AVIF vs JPG: compression that actually matters
JPG has been the default photo format since the 1990s, and its age shows. At the same visual quality level, AVIF encodes photos 40–55% smaller. A 1 MB product photo becomes 450–600 KB as AVIF. A 300 KB hero image becomes 140–180 KB. Across an e-commerce catalogue or image-heavy blog, those savings compound dramatically into faster page loads, lower bandwidth costs, and better Largest Contentful Paint (LCP) scores — a direct Core Web Vitals signal. JPG remains useful only for compatibility with software that predates modern format support.
AVIF vs WEBP: which is more compressed?
AVIF outperforms WEBP on compression in most tests, particularly at low-to-medium quality settings. At high quality (85–95%), the difference is smaller but still present. AVIF also handles fine gradients and low-frequency areas in photos better than WEBP, which can produce subtle banding artifacts. The trade-off is encoding speed: AVIF takes significantly longer to encode than WEBP because the AV1 codec is computationally heavier. For a web project where you are pre-encoding images at build time, that cost is paid once. For real-time encoding in the browser, it means a few extra seconds per large file — which is exactly what you will see using this converter.
Converting PNG to AVIF
PNG images are lossless and often very large — a full-screen screenshot can be 2–5 MB. AVIF can encode the same content at a tiny fraction of that size while maintaining excellent visual quality. Critically, AVIF preserves the alpha channel, so transparent logos, icons, and UI elements convert without any white background appearing. A 2 MB transparent PNG logo can become 100–300 KB as AVIF while remaining visually indistinguishable. For dedicated PNG-to-AVIF conversion, see our individual tool or use batch mode here to convert mixed-format collections.
Converting JPG to AVIF
JPG photos are already lossy-compressed. Re-encoding to AVIF introduces a second compression pass, but at 80% quality the additional loss is imperceptible while the file-size saving is significant. The AVIF encoder's model of the image is fundamentally more sophisticated than JPEG's DCT blocks — it preserves textures, edges, and gradients more cleanly. For high-traffic websites migrating away from JPG, use batch mode: drop up to 30 files at once, set your target quality, and download the ZIP.
Transparency in AVIF
AVIF supports a full 8-bit (and 10-bit) alpha transparency channel, the same capability as PNG. When you convert a transparent PNG, WEBP, GIF, or SVG to AVIF, the transparent areas are preserved exactly — no white fill, no colour bleed. This makes AVIF a direct replacement for PNG where you need both small file size and transparency: product photos on white backgrounds that need removal, UI icons, design assets for web use.
AVIF browser compatibility
As of 2026, AVIF is supported in all major modern browsers: Chrome 85+, Firefox 93+, Edge 121+, and Safari 16.4+. Global support is approximately 93–95%. The gaps are legacy Android WebView, pre-2022 macOS Safari, and some non-browser software. The recommended approach for websites is to serve AVIF as the primary format with a WEBP or JPG fallback using the HTML <picture> element — this covers 99%+ of browsers while delivering maximum compression to modern ones.
Batch converting images to AVIF
Drop up to 30 files — mix PNG, JPG, WEBP, GIF, BMP, and SVG freely in a single batch. All files convert in parallel and the quality setting applies to each one. AVIF encoding is slower than JPG or WEBP, so large batches may take 30–60 seconds depending on your CPU and image sizes. Download individually or grab a single ZIP with every converted AVIF. The ZIP preserves the original filenames with the extension changed to .avif.
Privacy
All conversion happens locally in your browser. No file data is transmitted to any server. The Canvas API decodes each image and re-encodes it as AVIF entirely within your tab. You can disconnect from the internet after loading the page and the converter will still work.