Multiple input formats
Uploads can be processed as PDF, EPUB, TXT, PNG, JPG, JPEG, or WEBP files, with a stated 100MB file limit.
Mooon
Mooon is a browser-based Japanese file processing tool that extracts text, normalizes layout, adds furigana, translates, and reads content aloud. It supports documents, images, EPUBs, and manga, and includes a browser extension for reading Japanese web pages.
What Mooon is
Mooon is a web product for processing Japanese-language files so they become easier to read, study, and reuse. It focuses on turning dense documents, scanned pages, and manga into usable text with reading support, translation, and audio output.
The site positions it around two workflows: a file mode for novels, papers, and other documents, and a manga mode for comics. Across both, Mooon can extract content, normalize layout, add furigana, translate, and read text aloud, with browser-based upload and no setup beyond opening the site.
Core capabilities
Layout conversion
The service can turn vertical, column-based, or mixed layouts into clean horizontal text, which is useful for Japanese novels, papers, and scanned documents.
Furigana annotation
It can annotate kanji and foreign words with reading guides, helping readers handle unfamiliar text without leaving the document.
Translation and bilingual reading
Mooon can translate file content and support side-by-side comparison or replacement of the translated text.
Reading and audio output
Files can be converted into audio with natural Japanese voices, and manga dialogue can also be read aloud.
Manga-specific workflow
In manga mode, the product extracts speech bubbles, supports copying and editing, and keeps original and translated text for comparison.
Common ways people use Mooon
Study dense documents
A reader uploads a vertical Japanese novel or academic paper and converts it into horizontal text with furigana, then translates or listens to it for easier study.
Read and edit manga
A manga reader uses manga mode to extract dialogue, copy or edit speech bubbles, add readings to kanji, and compare the original with a translation.
Build a parallel reading copy
Someone working across languages processes a Japanese file and uses translation plus replacement text to create a more readable bilingual version.
Annotate web reading
A learner browsing Japanese pages in the extension uses furigana, smart translation, and selection reading to understand web content without leaving the page.
Listen to Japanese content
A user turns text-heavy material into audio with natural Japanese voices when listening is more practical than reading, such as during review or accessibility use.
Pros and Cons
Pros
- Handles several Japanese file types in one browser product, including documents, images, and comics.
- Covers the full reading workflow: content extraction, furigana, translation, and audio output.
- Includes a manga-specific path for dialogue extraction, editing, translation, and bubble reading.
- Offers a Pro tier with higher or unlimited usage across most file-processing and browser-extension features.
Cons
- The Free tier is limited to 10 pages per month for PDF, image, and manga processing, and does not include EPUB or TXT processing.
- Some functions are capped on Free, including 5 daily uses for smart translation and explanation, while the pricing page does not show a team or enterprise plan.
- The source pages do not spell out every processing detail, so exact turnaround time and accuracy will vary by document type.
FAQ
How do I start processing a file in Mooon?
Mooon supports file upload in the browser. You can click or drag and drop a file, then choose a processing mode before starting.
What does Mooon produce after processing a file?
The site shows two modes: a faster general mode for most documents and an enhanced mode for complex layouts such as vertical text. The mode affects processing speed and recognition accuracy, but not billing or usage counts.
What outputs can I expect from Mooon?
Mooon can extract content, convert layout such as vertical-to-horizontal text, add furigana, translate and explain text, and read files aloud. The demo pages also show outputs for extracted dialogue, furigana, translation comparisons, and audio reading.
Can teams use Mooon together?
The pricing page shows a Free tier and a Pro subscription, with the browser extension available as part of the product ecosystem. The site does not provide a separate team plan or shared workspace on the pages provided.
What are the main limitations I should know about?
Mooon lists support for PDF, EPUB, TXT, PNG, JPG, JPEG, and WEBP on the site, with a 100MB file limit and an FAQ note that single processing can go up to 200 pages. EPUB and TXT are not available on the Free tier.
Quick Facts
- Category
- Japanese document processing
- Platform
- Web app with browser extension
- Primary use
- Reading and annotating Japanese PDFs, images, EPUBs, and manga
- Supported files
- PDF, EPUB, TXT, PNG, JPG, JPEG, WEBP
- File limit
- 100MB per file; FAQ notes up to 200 pages per processing run
- Pricing
- Free tier and Pro plan at ¥35/month
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