Translate the manga you own.
Serifu is a desktop translation editor built on the open-source Koharu. The heavy AI runs in the cloud: no GPU, no model downloads, no API keys. Drop in a volume, get it back in English, fix any line you like.
Free pages when you sign up, then pay per page.
Three steps. Nothing to configure.
- 01
Import
A folder of images, CBZ, ZIP or PDF. Page order and reading direction are detected; you can fix them.
- 02
Translate the volume
One click. Serifu finds every bubble and caption, reads it with the whole page for context, and writes English that fits.
- 03
Review and export
Every line stays an editable text layer. Change a word, re-translate a line, then export PNG, CBZ or layered PSD.
Love Koharu, hate the install?
Serifu keeps Koharu's editor and moves the heavy models to the cloud. If you have a strong GPU and like tinkering, Koharu itself is free and excellent.
| Koharu, minus the setup | Koharu on your PC | Serifu |
|---|---|---|
| Setup | Download 10–16 GB of models, match GPU drivers | Install, sign in, done |
| Hardware | A recent NVIDIA GPU works best | Any laptop, no GPU |
| Editor | Koharu's editor | The same editor, re-skinned |
| Text on artwork | Local inpainting | Redrawn by an image model |
| Cost | Free, runs on your hardware | Pay per page, credits never expire |
Built for real pages, not demos.
Reads with context
Each page is read whole, with the two pages before it, so speakers, names and numbers stay right.
Glossary
Pin how names and terms are translated. It carries across every volume in a series.
Art stays clean
Text drawn on artwork is removed and the art redrawn. If a spot needs a touch-up, Serifu flags it.
Sound effects kept
Hand-drawn sound effects are left as drawn by default, with their meaning available in the editor.
Your books stay yours.
Files live on your computer. A page is sent only while it is being translated and is not stored or shared. Serifu is a tool for manga you own, not a library.
1 credit = 1 page.
No subscription. Credits never expire. Text drawn on artwork is 1 credit per area to redraw. Failed work is refunded automatically, and re-translating a line is free.
Questions
Do I need a graphics card?
No. The heavy models run on our servers; any recent laptop runs Serifu.
Which files can I import?
A folder of images, CBZ, ZIP or PDF.
Can I edit the translation?
Yes. Every line is a text layer you can rewrite, restyle or re-translate, and export as PSD.
Is it related to Koharu?
Serifu is built on Koharu's open-source code (MIT / Apache-2.0) and credits it. We are not affiliated with its authors.