HEIC / HEIF to AVIF Converter

Convert HEIC / HEIF 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.

HEIC / HEIF decode → normalized image frames → AVIF encode

HEIC and HEIF input may contain efficient still images, alpha, color profiles, and multiple images.

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