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Bulk RMI to AVIF Converter Online — Free HD Quality

Drag and drop your multiple RMI files into this free online RMI to AVIF converter (.rmi 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 RMI 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

RMI vs AVIF — File Format Comparison

Feature RMI AVIF
File Extension .rmi .avif
MIME Type audio/midi image/avif
Compression Type Varies Lossy & Lossless
Metadata Support Yes Yes

What Is RMI Format?

RIFF MIDI — a Windows variant of the MIDI format wrapped in a RIFF container (the same container used by WAV), produced by older Windows Media Player and Cakewalk software.

  • Compression: Varies
  • 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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