WebP to AVIF Online Converter
Quickly convert WebP images to AVIF format. Supports batch conversion with adjustable quality and encoding presets.
Drop WebP images here
or click to select files, supports multiple selection
Why Use Our WebP to AVIF Converter
Fast Encoding
Two-speed preset system: fast encoding for daily use and maximum compression for smallest files. Toggle between them instantly — no complicated settings.
Superior Compression
AVIF's AV1 codec achieves 30-50% smaller files than WebP at the same quality. Convert your WebP images to AVIF and save significant bandwidth without visible quality loss.
Batch Processing
Select multiple WebP images at once for batch conversion. Process an entire folder in one click and download all converted AVIF files together.
Privacy Protection
All conversion is done locally in your browser using WASM-powered vips. Images are never uploaded to any server — they never leave your device.
How to Convert WebP to AVIF Online Free
Upload Your WebP Files
Click the upload area or drag WebP images directly into your browser. Our WebP to AVIF converter handles multiple files at once — select an entire folder and convert them all simultaneously. Processing happens entirely in your browser using WASM, so your files stay private and never leave your device.
Choose Your Preset and Quality
Pick "Fast Encoding" for quick daily conversions with balanced quality, or "Maximum Compression" for the smallest possible AVIF files. The quality slider lets you fine-tune between 10% and 100%. For web use, 70-85% quality with maximum compression produces stunning results at a fraction of the original WebP size.
Download Your AVIF Files
Each converted AVIF image shows a preview with the new file size compared to the original WebP. Download individually or click "Download All AVIF" to grab everything at once. The AVIF files are ready for modern websites, saving bandwidth and speeding up page loads on supported browsers.
WebP to AVIF Tips
Why Upgrade from WebP to AVIF
WebP is a great format, but AVIF is the next step forward. Using the AV1 video codec, AVIF achieves 30-50% better compression than WebP at equivalent quality. For websites already using WebP, switching to AVIF can further reduce file sizes, improve Core Web Vitals, and save bandwidth — especially on image-heavy pages.
Fast Encoding vs Maximum Compression
"Fast Encoding" (speed 6, quality 80) processes images quickly for everyday use — great for drafts, social media, or when you need results now. "Maximum Compression" (speed 0, quality 50) takes longer but produces the absolute smallest AVIF files, ideal for archival or when every byte matters. Try both to see which balance of speed and size works for your project.
When to Use AVIF Over WebP
Use AVIF for hero images, product photos, backgrounds, and any scenario where maximum compression matters. AVIF's superior codec means you serve higher quality at lower file sizes compared to WebP. Browser support now includes Chrome 85+, Firefox 93+, and Safari 16.4+, making AVIF a practical choice for production websites targeting modern browsers.
Frequently Asked Questions
What is AVIF and why use it over WebP?
AVIF (AV1 Image File Format) is a next-generation image format that uses AV1 compression technology. It can produce images up to 50% smaller than WebP at the same quality level, and supports modern features like HDR and wide color gamut. For the same visual quality, AVIF files are typically 30-50% smaller than WebP, making it the ideal format for modern web performance.
Will I lose quality converting WebP to AVIF?
AVIF uses lossy compression, so there is some quality loss. However, at high quality settings (80+), the difference is visually imperceptible for most images. AVIF's AV1 codec is significantly more efficient than WebP, meaning you get smaller files at comparable quality. For web use, quality 80-85 with maximum compression produces stunning results at a fraction of the original WebP file size.
Which browsers support AVIF?
AVIF is supported in Chrome 85+, Firefox 93+, Safari 16.4+, and all Chromium-based browsers like Edge and Opera. The format is also supported by most major image editing tools and operating systems. Check caniuse.com for the latest browser support information.
Can I convert multiple WebP files at once?
Yes, batch conversion is fully supported. Select a whole folder of WebP images and convert them all at once. Each image is processed independently using wasm-vips right in your browser, and you can download them individually or click 'Download All AVIF' to get everything in one go. There is no limit on the number of files.