Lumo
Your ebooks, read aloud in natural Vietnamese
Lumo turns the books you already have into audiobooks with chapters, right on your computer. No account, no upload, no subscription.
Năm 1975, ông rời TP.HCM với 3.000đ trong túi. Ngày 12/10 lúc 7h30, ông về tới cổng làng.
Năm một nghìn chín trăm bảy mươi lăm, ông rời thành phố Hồ Chí Minh với ba nghìn đồng trong túi. Ngày mười hai tháng mười lúc bảy giờ ba mươi phút, ông về tới cổng làng.
How it works
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Add a book
Drop an EPUB, MOBI, AZW3, PDF, DOCX or TXT file into Lumo. Chapters are found for you; rename or skip any of them.
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Pick a voice
Choose from 25 Vietnamese voices, northern and southern, and listen to a sample before you start. Set the reading speed you like.
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Get an audiobook
Lumo reads the whole book and saves one .m4b file with chapters and cover, ready for Apple Books, BookPlayer, Smart AudioBook Player and more.
Made for long books
Works offline
After a one-time download of the voice model, everything runs on your own processor. Your books never leave your computer.
Picks up where it stopped
Close Lumo in the middle of a 600-page novel. Finished chapters are kept and it carries on from the next one.
Real chapters
The audiobook keeps the book's chapter titles, so you can jump straight to the part you want.
Natural voices
Powered by VieNeu-TTS, an open Vietnamese speech model. It reads at a comfortable pace, with pauses at sentences and paragraphs.
Private by default
Lumo does not ask for an account and does not send your books anywhere. It only goes online once, to download its voice engine and model the first time you open it.
If you want, you can share a finished audiobook with the Lumo library. You see exactly what is sent, it travels over an encrypted connection with an anonymous device code, and a person reviews it before anyone else can listen.
Download Lumo
| System | File |
|---|---|
| Windows 10 and 1164-bit | Lumo for Windows |
| macOS 13 or laterApple Silicon and Intel | Lumo for macOS |
| Linuxx86-64, Ubuntu 22.04 or later | Lumo for Linux |
First startLumo downloads its voice engine and model once, about 750 MB. After that it works offline.
WindowsIf SmartScreen shows “Windows protected your PC”, choose More info, then Run anyway. Lumo is not code-signed yet.
macOSUnzip, move Lumo to Applications, then right-click it and choose Open the first time. Or run xattr -dr com.apple.quarantine /Applications/Lumo.app
What your computer needs
| System | Windows 10 or 11 (64-bit), macOS 13 Ventura or later (Apple Silicon or Intel), or 64-bit Linux with WebKitGTK 4.1, such as Ubuntu 22.04, Debian 12 or newer |
|---|---|
| Processor | 64-bit, 4 cores or more. Lumo reads with the processor only, so no graphics card is needed. |
| Memory | 8 GB recommended. Lumo uses up to about 3 GB while it reads. |
| Storage | 1.2 GB for the voice engine and model, plus about 60 MB per hour of audio while a book converts. The finished audiobook takes about 30 MB per hour. |
| Internet | Only once, to download about 750 MB the first time you open Lumo. |
How long it takes depends on your processor. On a 2019 laptop with an Intel Core i5-10210U (4 cores), Lumo reads about 15 characters per second: a 10-hour audiobook, roughly a 400-page novel, takes about 8 hours. Faster and newer processors finish sooner, and you can leave it running overnight or stop and continue later.