Batch Image to AVIF Converter

Pure Local Processing No Server Upload 7 Output Formats Canvas API

Output Format

PNG Lossless, supports transparency JPEG Small file, best for photos WebP Modern web format AVIF Next-gen compression BMP Uncompressed bitmap TIFF Professional print/archive ICO Icon format for Windows

100% Free & Private batch image to AVIF converter. No file upload required — convert HEIC, PNG, JPG, WebP, BMP, TIFF, ICO to next-gen AVIF locally in your browser. Reduce file size up to 50% vs JPG. Supports lossy/lossless modes, quality control, and batch ZIP download.

Tips & Tricks

Next-Gen Compression

AVIF delivers 50% smaller file sizes than JPEG at the same quality, using the modern AV1 codec. It supports HDR, wide color gamut, and transparency.

When to Use AVIF

Choose AVIF for cutting-edge web applications where bandwidth savings are critical. It offers the best compression ratio among modern image formats.

AVIF Best Practices

Use AVIF with a WebP or JPEG fallback for broad browser support. It excels at photographs and complex images but may not compress simple graphics as efficiently.

Common Use Cases

Bandwidth Savings

Drastically reduce data transfer costs with superior compression

High-Resolution Images

Serve 4K and 8K photos at a fraction of the original size

HDR Photography

Preserve HDR metadata and wide color gamut information

Streaming Thumbnails

Generate ultra-efficient preview thumbnails for media libraries

Content Delivery

Minimize CDN costs with the smallest possible image files

Progressive Web Apps

Build fast-loading PWAs with minimal image payload

Frequently Asked Questions

Are my images uploaded to a server?

No. All processing runs entirely in your browser via the Canvas API. Your images never leave your device.

Is AVIF widely supported in browsers?

AVIF is supported by Chrome 85+, Firefox 93+, Opera 71+, and Safari 16.5+. Support is growing rapidly. For the best reach, offer WebP or JPEG as fallbacks alongside AVIF using the element.

Is there a file size limit?

Yes, each file must be under 50 MB. You can upload up to 20 files at once. If you need to convert more, process them in batches.

How does AVIF compare to WebP?

AVIF typically achieves 20-30% better compression than WebP at the same quality level. It supports 10-bit HDR color, lossless mode, and advanced features like film grain synthesis. However, WebP has broader browser support for now.

Can I convert multiple images at once?

Yes. Upload up to 20 images at once. After conversion, you can download each file individually or package them all as a ZIP archive for convenience.