Convert images into AVIF for high compression efficiency.
AVIF Converter transforms your images into the next-generation AVIF format, delivering exceptional compression efficiency with impressive visual quality. It is free, entirely browser-based, and requires no login or server upload.
AVIF Converter is a client-side tool that re-encodes JPG, PNG, WEBP, or GIF images into the AV1 Image File Format. AVIF achieves some of the highest compression ratios available today, often producing files 30-50 percent smaller than equivalent WEBP or JPEG output while maintaining excellent perceptual quality. The format supports HDR, wide color gamut, and transparency. Because conversion happens locally in your browser, your images are never sent to a remote server, keeping your files completely private.
Upload a source image through the file input. Adjust the quality slider to control the balance between file size and detail -- a setting of 75 to 85 is a strong starting point for most photographs. Click Convert to process the image using your browser's native AVIF encoding support. Preview the output on the canvas to verify quality, then click Download AVIF to save the file to your device. Note that AVIF encoding is browser-dependent, so the tool works best in up-to-date versions of Chrome, Firefox, or Edge.
AVIF support has expanded significantly since 2021 but is not yet universal. As of 2024, AVIF is natively supported in Chrome (version 85+), Firefox (version 93+), Edge (version 89+), and Safari (version 16.0+ on macOS Ventura and iOS 16+). Older versions of Safari and Internet Explorer do not support AVIF. On Android, Chrome and Firefox support AVIF, while the default Samsung Internet browser gained support in version 16 (2022). For websites targeting broad audiences including users on older devices or browsers, always provide a JPG or WEBP fallback using the HTML picture element with multiple source elements ordered from most to least efficient format. AVIF without fallback will cause images to fail to load entirely on unsupported browsers, which is a significant user experience problem. Always test on your target browser range before deploying AVIF as your primary image format.
AVIF typically achieves the smallest file sizes among the three formats at equivalent visual quality, followed by WEBP, then JPG. At equivalent perceived quality settings, AVIF files are commonly 30% to 50% smaller than JPEG and 15% to 30% smaller than WEBP. The file size advantage of AVIF is most pronounced in photographs with complex color content and gradients — exactly the content where JPEG artifacts are also most visible. For simple graphics, logos, and images with flat color areas, the size advantage over WEBP is less dramatic. The tradeoff for AVIF's smaller file sizes is slower encoding time — converting an image to AVIF takes noticeably longer than JPG or WEBP conversion, which matters when processing many images in bulk. For browser-side single-image conversion as in this tool, encoding speed is less of a concern than for server-side batch processing pipelines.
Yes. All image processing in the AVIF Converter happens entirely within your browser using the browser's native AVIF encoding support. Your image files are never uploaded to Popupnote.com's servers or transmitted anywhere over the network. The conversion is performed locally on your device, and the resulting AVIF file is downloaded directly from the browser to your local storage. No images, metadata, or usage data are logged. You can convert confidential or personal images without concern about data exposure.