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Bulk FLAC to AVIF Converter Online — Free HD Quality

Drag and drop your multiple FLAC files into this free online FLAC to AVIF converter (.flac to .avif), and click the Convert button to bulk convert them to AVIF format in HD quality. Use the quality slider to fine-tune your AVIF output, then download your converted files one by one or as a single ZIP — your original FLAC files are removed from our servers right after.

To:
85%

Drop images here or click to browse

PNG, JPG, WebP, GIF, HEIC, RAW, PSD, SVG and more

Max 100MB per file

FLAC vs AVIF — File Format Comparison

Feature FLAC AVIF
File Extension .flac .avif
MIME Type audio/flac image/avif
Compression Type Lossless Lossy & Lossless
Metadata Support Yes Yes

What Is FLAC Format?

Free Lossless Audio Codec — open-source lossless compression that reduces file size by 40–60% versus WAV with zero quality loss, perfect for audiophile archiving.

  • Compression: Lossless
  • Tags & Metadata: Supported

What Is AVIF Format?

AV1 Image File Format with superior compression for modern browsers.

  • Compression: Lossy & Lossless
  • Tags & Metadata: Supported

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