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AI Document to Audio Converter & Voice Cloning

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Website, pricing, platforms and company facts side by side.
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| Website | docstoaudio.online | opalstack.com |
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| Company | 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


DocsToAudio converts PDF, EPUB, DOCX, and TXT files into MP3 or M4B audiobooks using AI voices — or your own cloned voice. Free tier: 300+ voices, 30+ languages, no account required, no file size limits. Your document is parsed in-browser — the file is never uploaded to a server. Premium tier...
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As answered by people managing DocsToAudio.online and Opalstack.
DocsToAudio.online's answer
DocsToAudio serves authors turning books and drafts into audio, podcast creators converting scripts into episodes, educators producing accessible lessons, and students listening to study materials. It is also useful for professionals reviewing reports, readers with large ebook libraries, and people who prefer or need an alternative to screen-based reading.
DocsToAudio.online's answer
DocsToAudio began as a simple way to turn complete documents into structured audio without creating an account or splitting text into small pieces. It has since evolved into a broader AI audio platform for audiobooks, podcast episodes, educational content, and personal listening. Today it combines a free Standard tier with ElevenLabs and Gemini models, background conversion, and authorized voice cloning—while keeping document parsing in the browser.
DocsToAudio.online's answer
DocsToAudio primarily serves individual users rather than named enterprise customers:
DocsToAudio.online's answer
DocsToAudio is built with Next.js 16, React 19, TypeScript, and Tailwind CSS 4. Document parsing uses PDF.js, epub.js, and Mammoth. Speech generation integrates Microsoft Standard voices, ElevenLabs, and Google Gemini, while authorized voice cloning currently uses ElevenLabs. FFmpeg WebAssembly handles browser-side audio packaging, Neon provides serverless PostgreSQL storage, and Cloudflare R2 stores temporary Premium audio and voice previews.
DocsToAudio.online's answer
DocsToAudio combines long-document conversion, multiple AI voice models, and authorized voice cloning in one workflow. The free Standard tier requires no sign-up, while Premium adds ElevenLabs and Gemini voices, background conversion, email notifications, and seven-day re-downloads. Original document files are parsed in the browser and are never uploaded to our servers.
DocsToAudio.online's answer
DocsToAudio is designed for complete documents rather than short copy-and-paste text. Users can upload PDF, EPUB, DOCX, or TXT files, select chapters, edit extracted text, preview voices, and download MP3 or M4B audio with chapter markers. The free Standard tier offers 300+ voices without an account, while Premium provides 800+ ElevenLabs voices, Gemini models, authorized voice cloning, background conversion, and pay-as-you-go pricing with no subscription.
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