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Convert EPUB, PDF, DOCX & TXT to MP3 or M4B audiobooks. Free tier: 300+ voices, no sign-up, no size limits. Premium tier: 800+ ElevenLabs AI voices. No subscriptions.
DocstoAudio is a free online tool that converts EPUB, PDF, DOCX, and TXT files into MP3 or M4B audiobooks. It offers a free Standard tier with 300+ voices and no sign-up required, and a Premium tier with 800+ ElevenLabs AI voices for more natural narration. There are no file size limits.
Is it free to use? Yes, the Standard tier is completely free with no account, no usage limits, and no hidden fees. Premium uses ElevenLabs AI voices and requires an account and credits.
What input and output formats are supported? Input: PDF, EPUB, DOCX, TXT. Output: ZIP of MP3 files (one per chapter) or single M4B audiobook with chapter marks.
Do I need to create an account? No, not for the Standard tier. An account is required only for the Premium tier.
Do you store my files or generated audio? No. Your document is parsed in your browser and never uploaded. Only the selected text of each chapter is sent to generate audio. Files are not stored.
What languages and voices are supported? Standard: 300+ voices in 30+ languages. Premium: 800+ voices in 30+ languages via ElevenLabs.
Is there a file size limit? No hard limit, but very large files may slow down your browser.
Can I close the browser tab during conversion? No. Conversion runs live in your browser tab; closing or refreshing will interrupt it.
What if conversion fails? For Standard, refreshing and retrying is safe and free. For Premium, a small number of credits may be consumed if a chapter was already processed.
Can I use the converted audio commercially? Commercial use depends on your rights to the source text and the terms of the speech service. You are responsible for ensuring compliance.