u/Arkastorss

TLDR; for all my people who read manhwa on an ereader, i built an app where you can watch it split the panels for you and then convert the file so you can read it on your kindle, kobo, or whatever ereader you have. it's free, no install, runs in the browser.

Site: mangaconverter.com/manhua

CONTEXT

the software kcc (kindle comic converter) has saved me so many times, so first off, big thanks to the maintainers. it's genuinely good software and it eats basically every format you throw at it.

WHY I BUILT IT

that said, as a casual user it's kind of a pain. you install a desktop app, mess with a bunch of settings, run the conversion, and only then do you find out if it looks right. and half the time it doesn't, so you tweak and run it again. you're basically converting blind.

manhwa was the thing that finally got me. the vertical scroll stuff just does not want to sit right on a kindle or kobo, and my remarkable was no better. every long strip turned into this guess-and-check loop and i got sick of it. so i built a little browser converter instead. no install, and it shows you a live preview before you export so you can actually see the pages first. i've been using it myself for a while and it's honestly made reading manhwa on my kindle painless, so i figured i'd share it in case anyone here has the same headache:

Finally let me know if it works for you and if you have any issues 😁

mangaconverter.com/manhua

I have a pile of manga and comics and a Kindle, and the usual way to get one onto the other is Kindle Comic Converter. It is a great tool, but it is a desktop app: install it on one machine, convert one file at a time, and you are stuck at that machine.

So I wrapped it in a web UI and put it on my server. Now anyone in the house converts from a browser, including from a phone.

https://github.com/NilsLeo/kcc-cloud

What it does:

- docker compose up, then drop CBZ, CBR, CB7, ZIP, RAR, PDF or EPUB in the browser

- Get back EPUB, MOBI, KEPUB or a repacked CBZ sized for the exact device

- Live preview of the converted pages while you adjust margins, dithering, splitting and reading direction, so you stop guessing and reconverting

- Around 35 device profiles: Kindle models, Kobo with proper KEPUB, reMarkable, PocketBook, Onyx

- Batch queue for whole volume runs

- Files stay on your box

Resource use is modest. It is CPU-bound, no GPU, a couple of cores handle a volume in well under a minute. The heavy lifting is KCC itself, which does the actual conversion, and I have contributed a few fixes back upstream while building this.

If you want to try it before deploying anything, I run a public instance at https://mangaconverter.com - same code, same engine, just hosted.

Happy to hear what breaks, especially around the compose setup. I would like the self-host path to be the first-class one rather than an afterthought.

Hey everyone,

Six months ago I posted my free web tool for converting manga and comics for e-readers, and this sub gave me more useful feedback than anywhere else. Here's what changed since:

👉 https://mangaconverter.com

• Live preview: see the converted pages before you convert, updates while you tweak margins, dithering, reading direction
• Standard EPUB/MOBI output: drops straight into your Calibre library and your existing send-to-device setup
• 35 device presets: Kindle, Kobo with real KEPUB, reMarkable, PocketBook
• Survives broken files: partially damaged archives and nested zips convert instead of dying
• Free, no install, runs Kindle Comic Converter under the hood

My own workflow is mangaconverter for the conversion, Calibre for library and transfer. The old cycle of convert, import, send, notice the margins are wrong, delete, reconvert is gone: you fix it before the file exists. The broken-file handling exists because people here sent me broken files.

Rather not upload files anywhere? It's open source and self-hostable with Docker: https://github.com/NilsLeo/kcc-cloud

Curious what your conversion step looks like these days and what's still missing. Half my roadmap came out of the last thread here.