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Bulk AMR to PBM Converter Online — Free HD Quality

Drag and drop your multiple AMR files into this free online AMR to PBM converter (.amr to .pbm), and click the Convert button to bulk convert them to PBM format in HD quality. Use the quality slider to fine-tune your PBM output, then download your converted files one by one or as a single ZIP — your original AMR 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

AMR vs PBM — File Format Comparison

Feature AMR PBM
File Extension .amr .pbm
MIME Type audio/amr image/x-portable-bitmap
Compression Type Lossy Lossless
Metadata Support No Yes

What Is AMR Format?

Adaptive Multi-Rate — the standard voice codec for GSM and UMTS mobile networks, used in phone call recordings and voice messages; delivers compact files optimised for speech at 8 kHz.

  • Compression: Lossy
  • Tags & Metadata: Not supported

What Is PBM Format?

Portable Bitmap format for monochrome images.

  • Compression: Lossless
  • Tags & Metadata: Supported

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