Mooon is a one-step processing engine designed for Japanese documents like novels, papers, and handwritten notes. It makes Japanese files easy to handle by automating layout optimization, furigana annotation, file translation, audiobook and more. Various formats are supported, like PDF, EPUB, images, etc.
Hey everyone! 👋 We're excited to finally launch Mooon here on Product Hunt.
Mooon is a one-step processing engine built for Japanese documents, such as novels, academic papers, handwritten notes, and more. It takes the pain out of handling Japanese files by automating:
- Layout optimization (vertical → clean horizontal, multi-column handling, etc.)
- Furigana (振仮名) annotation for kanji and borrowed words
- File translation with or without keeping the original text side-by-side
- File to audiobook with natural Japanese voices
It supports for PDF, EPUB, images (PNG/JPG/WEBP), and more.
Mooon could help very much if you're
- an advanced beginner to intermediate Japanese learner
- a researcher/studuent who need to read, reference or digitalize academic resources
- a fan of Japanese cultures who love to read original works
This is our first public launch after months of iterating based on early user feedback from fellow Japanese learners and researchers. Would love to hear your thoughts!
If it helps your workflows, we'd be thrilled if you upvote and share. Thanks for checking it out! 🚀
Automating furigana annotation for kanji solves one of the biggest friction points for intermediate Japanese learners — constantly looking up readings breaks the reading flow and kills motivation. The vertical-to-horizontal layout conversion combined with side-by-side translation output is particularly useful for academic papers where you need both the original and translated text for citation purposes. Does the audiobook generation handle the pitch accent differences across Japanese dialects?
@svyat_dvoretski Hi, thanks for the comment! For now Mooon only handles the common Japanese accent, but it supports voices of various characters.
Report
The claim that Mooon does OCR, layout analysis and semantic extraction in a single step is intriguing – does the engine run the whole pipeline on‑device or does it fall back to a cloud service for the heavy lifting? I could see it slotting nicely into a CI job that validates Japanese contracts before they hit a legal‑review board.
@lliora To make sure the accuracy and resources load used to process a file with up to 200 pages, purely processing on a local device is quite difficult so cloud service will be used. And yes, some of our users are actually integrating Mooon in contract review for their business according to our interviews. Thanks for the comment!
Report
Really cool niche product. The automatic furigana annotation alone would save so much time for anyone reading Japanese content above their level. Being able to go from a raw PDF to an audiobook in one step is a killer feature for commuters studying Japanese. Do you plan to expand this to other CJK languages like Chinese or Korean in the future?
Mooon is built on a multilingual file processing engine we designed. It has already the ability to perform accurate OCR and content arrangement for Chinese, English, Korean files. Attached is an example of an multilingual image in a complex layout.
We have users researching in ancient Chinese finding Mooon help a lot in text recognition and digitalization. Mooon currently puts an emphasis on Japanese in product because people might find more problems in this mixed-writing language, but other cjk languages are absolutely supported!
@ranjan_kumar45 Thanks! Mooon supports pdf, epub, images (png, jpe, etc) and txt, so Mooon can handle any of them as long as you have the files in these formats.
Great, this engine handles Japanese files in one step and even adds furigana and audio. Scrolling through, I can see it works for papers and manga. Feels like someone thought of everything. Good luck!
@capric_guan You're welcome! I've a question: Who's your primary user right now, manga readers or academic researchers? I'm curious because the homepage speaks to both but feels like it wants to pick one.
Palaxy
Anysite.io
Automating furigana annotation for kanji solves one of the biggest friction points for intermediate Japanese learners — constantly looking up readings breaks the reading flow and kills motivation. The vertical-to-horizontal layout conversion combined with side-by-side translation output is particularly useful for academic papers where you need both the original and translated text for citation purposes. Does the audiobook generation handle the pitch accent differences across Japanese dialects?
Palaxy
@svyat_dvoretski Hi, thanks for the comment! For now Mooon only handles the common Japanese accent, but it supports voices of various characters.
The claim that Mooon does OCR, layout analysis and semantic extraction in a single step is intriguing – does the engine run the whole pipeline on‑device or does it fall back to a cloud service for the heavy lifting? I could see it slotting nicely into a CI job that validates Japanese contracts before they hit a legal‑review board.
Palaxy
@lliora To make sure the accuracy and resources load used to process a file with up to 200 pages, purely processing on a local device is quite difficult so cloud service will be used. And yes, some of our users are actually integrating Mooon in contract review for their business according to our interviews. Thanks for the comment!
Really cool niche product. The automatic furigana annotation alone would save so much time for anyone reading Japanese content above their level. Being able to go from a raw PDF to an audiobook in one step is a killer feature for commuters studying Japanese. Do you plan to expand this to other CJK languages like Chinese or Korean in the future?
Palaxy
@borrellr_ Thanks for the comment!
Mooon is built on a multilingual file processing engine we designed. It has already the ability to perform accurate OCR and content arrangement for Chinese, English, Korean files. Attached is an example of an multilingual image in a complex layout.
We have users researching in ancient Chinese finding Mooon help a lot in text recognition and digitalization. Mooon currently puts an emphasis on Japanese in product because people might find more problems in this mixed-writing language, but other cjk languages are absolutely supported!
@borrellr_ @capric_guan wow thats really cool stuff
Congrats. Does it support conversion to Kindle version as well?
Palaxy
@ranjan_kumar45 Thanks! Mooon supports pdf, epub, images (png, jpe, etc) and txt, so Mooon can handle any of them as long as you have the files in these formats.
Product Hunt
This is actually pretty handy for digitizing a lot of Japanese paperwork as well. Nicely done!
Palaxy
@gabe Glad to know Mooon helps!
Great, this engine handles Japanese files in one step and even adds furigana and audio. Scrolling through, I can see it works for papers and manga. Feels like someone thought of everything. Good luck!
Palaxy
@taimur_haider1 Thanks for the support!
@capric_guan You're welcome! I've a question: Who's your primary user right now, manga readers or academic researchers? I'm curious because the homepage speaks to both but feels like it wants to pick one.