| What it does | Convert PDF, EPUB, DOCX and TXT files to MP3 or M4B audio online
| Free browser-based audio tools that run entirely in your browser
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| Pricing model | Freemium
| Free
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| Pricing | Free: Standard voices with 50,000 characters per day limit for signed-in users. Premium: Pay-as-you-go credits starting at $5.99 for 5,000 credits, $15 for 15,000 credits, $30 for 30,000 credits, or $50 for 50,000 credits. Credits are valid for 1 year.
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| Key features | - Convert PDF, EPUB, DOCX and TXT files to MP3 or M4B audio
- 300+ Standard voices in 30+ languages
- 800+ Premium AI voices via ElevenLabs and Gemini
- Select pages or chapters before conversion
- Review and edit extracted text before converting
- Download as ZIP of MP3 files or single M4B audiobook
- Background conversion for Premium users
- Re-download audio for 7 days after generation
- Voice cloning with ElevenLabs
- Privacy-first: documents parsed in browser, never uploaded to servers
| - Quality Analyzer - detect upsampling, check spectrum, dynamic range, and clipping
- Spectrogram Viewer - visualize frequency content over time with adjustable FFT and color palettes
- Audio Converter - convert between WAV, AIFF, FLAC, MP3, OGG, and AAC
- Video to Audio - extract audio track from video files
- Audio Trimmer - cut and trim audio with precision using waveform display
- Audio Merger - combine multiple audio files with smooth crossfade or fade transitions
- Speed & Pitch Changer - speed up, slow down, and shift key or BPM
- Audio Compressor - reduce file size by re-encoding with optimized bitrate
- Tone Generator - generate sine, square, sawtooth, triangle, noise at any frequency
- Metadata Editor - view, edit or remove ID3 tags and cover art
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| What makes it different | - Built specifically for long documents with chapter selection and text preview
- Free tier with 50,000 characters daily allowance, no credit card required
- Access to premium AI voices from ElevenLabs and Google Gemini with pay-as-you-go pricing
- Document privacy: file parsing happens in browser, sensitive content never uploaded
| - 24 comprehensive audio tools in one free platform
- Built by an audiophile developer for the music community
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 4 ▲ +1 (up) since last check | 16 ▼ −1 (down) since last check |
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| Trust Flow (Majestic) | 11 | 6 |
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| Citation Flow (Majestic) | 26 | 25 |
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| Referring domains (Majestic) | 49 | 55 |
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DocsToAudio
SoniqTools