ICO to AVIF Converter

Convert ICO images to AVIF in a browser-only batch. Files and results are never uploaded.

Common output settings

Advanced settings

Use lossless encoding when supported

The batch workspace is ready. Image encoding becomes available after the verified browser engine is loaded.

ICO decode → normalized image frames → AVIF encode

ICO input may contain several icon sizes and pixel formats in one file.

AVIF output favors small files and supports alpha and animation, but encoding can take longer.