Last updated 07-22-2026
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gengo app
Gengo is a cross-platform manga and light novel reader built for Japanese learners. Upload your own image files and read with an integrated OCR dictionary plus vocabulary tools that let you look up words without leaving the page.
The app draws inspiration from immersive learning methods like AJATT and fills a gap left by Android-only readers such as Kaku. You bring your own reading material; Gengo does not host or distribute copyrighted manga or novels.
It supports PNG and JPG images, whole folders, and ZIP archives. The web app is free to use, with optional Patreon support for development.
Integrated OCR dictionary for looking up Japanese words while you read
Import individual PNG or JPG files, full folders, or ZIP archives of images
Built for immersive Japanese study, inspired by AJATT-style learning
Cross-platform web app with theme settings and a recently read library
Active Discord community where users share feedback and vote on new features
Free web app with no paywall on core reading features.
OCR dictionary keeps lookups inside your reading flow.
Supports bulk imports via folders and ZIP files.
Only accepts PNG and JPG images, not EPUB or other ebook formats.
Users must supply their own reading material; nothing is hosted in-app.
Is gengo app free to use?
Yes. The application is completely free to use. Donations through Patreon are optional and help support development and maintenance.
What file formats does gengo app support?
Gengo currently supports image files in PNG and JPG format. You can import individual images, an entire folder of images, or a ZIP file containing images.
Does gengo app provide manga or light novel content?
No. Gengo does not distribute copyrighted materials. Users must provide their own reading files, which keeps the app compliant with copyright laws.
How can I report bugs or request features?
You can message the team on Discord or Patreon. Bug reports, feedback, and feature requests are welcome through those community channels.
What language is gengo app designed for?
Gengo is designed for learning Japanese while reading manga and light novels. Its OCR dictionary and language tools target Japanese vocabulary acquisition.