Free Online Audiobook Tools

Privacy-focused audiobook tools that run entirely in your browser. View metadata, extract tags, edit files, and convert audiobook formats without installing desktop software.

100% Private
Instant Processing
Metadata + Converter Tools

Metadata Viewer & Extractor

View complete metadata from audiobook files instantly and export the results to JSON. See chapters, cover art, ID3 tags, and technical info.

  • View metadata instantly
  • Export to JSON
  • See cover art
  • Technical details
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Metadata Editor

Edit and save metadata directly to your audiobook files. Change title, author, cover art, and more.

  • Edit metadata
  • Update cover art
  • Change title/author
  • Save to file
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Audiobook File Merger

Merge multiple audiobook files into one single MP3 or M4B. Reorder tracks and build a cleaner file for playback or import.

  • Merge many files
  • Reorder tracks
  • MP3 or M4B output
  • Browser-based
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M4B to MP3 Converter

Convert single-file M4B audiobooks into MP3 directly in your browser with no desktop software or upload required.

  • Free online
  • Browser conversion
  • No upload
  • Playback-friendly output
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MP3 to M4B Converter

Convert MP3 audiobooks into M4B-compatible files in your browser when you want a simpler audiobook container.

  • Free online
  • M4B output
  • Single-file workflow
  • Browser-based
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Supported Formats

MP3
M4B
M4A
AAC
OGG
FLAC
WAV
OPUS

About Our Tools

These free audiobook tools allow you to inspect and extract metadata from your audiobook files without uploading them to any server. They are designed as lightweight browser-based utilities for auditing, editing, exporting, and converting audiobook files without changing the core Audiobooky app experience.

What Metadata Can Be Extracted?

  • Basic Info: Title, author, narrator, album
  • Duration: Total length and chapter timestamps
  • File Info: Size, format, codec details
  • ID3 Tags: Genre, year, track number, publisher
  • Cover Art: Embedded album artwork
  • Chapters: Chapter markers and durations
  • Technical: Bitrate, sample rate, channels

Related Resources

If you want deeper technical detail, these references are useful alongside Audiobooky's free online audiobook tools.

FFmpeg DocumentationID3 Metadata ReferenceLibriVox Public Domain AudiobooksQuickTime / MP4 Container Reference