KOReader

Cider9986

You can use the regular Kindle viewer once you jailbroke your kindle, but KOReader has native epub and pdf support so you don't have to use a converter when uploading your books. I did find it hard to get the bezels to be even and it still doesn't always format well depending on the book. I still kind of prefer the default viewer. I use this plugin in KOReader which lets you download books from Z-Library within KOReader. https://github.com/ZlibraryKO/zlibrary.koplugin Another cool thing is you can use custom fonts and dictionaries. I use the OED short version and the Wikipedia one. There's built in ones that it can download but pirated ones like OED you have to upload yourself. Unfortunately on MacOS it seems you have to use Amazon's app to access the filesystem. Edit: They changed it on the newer Kindle which I have. There's open source alternatives to the send to kindle app.

dmos62

Use it both on my phone and on an eink Android tablet. Love it, especially the dark mode.

simonklitj

KOReader is my jam! With its reflow for PDFs, I've used it on my Kindle Oasis 2 to read everything for my undergrad and graduate degree. Some years ago now, I wrote a script that converts the annotations to Obsidian [0], and then another little script to automatically keep my "Articles" folders in sync between the Kindle and my laptop. Very grateful for this software! [0]: https://github.com/simonpacis/kohico

adamas

I have it on my Kobo, it's really good ! I use it with Wallabag, I can save articles on my desktop and sync it before leaving for work, really nice.

carlosjobim

My wish is to see ebooks become first class citizens on all digital devices. Apple has a native ebook reader built in to their devices. It's cumbersome and bloated, but it's there. No web browser except Yandex has built in ebook support, even though it would be the easiest thing in the world. Android, Linux and Windows have no built-in ebook reader, as far as I know. Murasaki [1] is the most performant and sleek ebook reader you can get for MacOS currently. It's magnificent, but the creator has regionally limited who can get it, unfortunately. [1] https://genjiapp.com/mac/murasaki/index_en.html

starvar2

I installed it on my Kobo to have the syncing from Calibre. Works perfectly, no complaints.

lolgab

I installed it on my Amazon Kindle and I couldn't be happier. It shows once again that free software is superior to proprietary software. Free software grows slowly to make users happier and not to attract them with useless features to extract more value from them. Congratulations for this great piece of software.

HelloUsername

Previous discussions: 31-mar-2025 https://news.ycombinator.com/item?id=43539103 106 comments 10-apr-2024 https://news.ycombinator.com/item?id=39996947 33 comments

jbirnick

I absolutely love KOReader on my Boox Go 10.3! It has super useful features like the semi-auto-cropping which removes margins in PDFs (like papers or books), including unnecessary things like page numbers or similar, so that you can really maximize the size of the core content. It also has a nice chapter overview and other useful things! Truly one of the best pieces of software I have used so far.

timvdalen

See also this discussion from earlier today, which might have prompted this submission: https://news.ycombinator.com/item?id=49094189

mlue-the-one

The PDF support is just the right thing to have.

spiresofagartha

It seems there's a native dictionary. How does it fare?

dtj1123

It really does rock.

utopiah

FWIW not only it is in itself nice but it evens has plugin system. Consider extending it and sharing back with the community!

radel

It took me some time to know my way around it, but wow. I have it configured with some plugins, like zen ui and bookshelf. I Also use BookOrbit to sync reading progress and annotations between devices. Loving it.

khalic

I tried but the whole process is a miserable experience between the stale blog posts and the dead links… And then the UX… great project but could use a systems guy used to jailbreaking installations and a UX designer Edit: for kobo at least

pesarkhobeee

I am using koreader on my ereader and KOreader has a native support for https://wallabag.org/ . They are both fantastic opensource projects, whenever I like to read a blog post I am sending them to my wallabag and therefore I can easily have them on my ereader too. Also the fact that you can install different plugin on KOreader and customize it in a way you like is fantastic. for example just check: - https://github.com/doctorhetfield-cmd/simpleui.koplugin - https://github.com/AndyHazz/bookshelf.koplugin Or with Lua you can develop your own plugin for that. to people who wanted to jailbreak their Kindle I can recommend these two links: - https://kindlemodding.org/ - https://www.youtube.com/watch?v=Qtk7ERwlIAk All in all I am supper happy with KOreader and can't imagine to use anything else

sieve

I installed this the moment I got my Kobo Libra H2O. Mostly read fiction from the 1800s and early 1900s and I did not want to fight whatever proprietary software the reader came with (Kobo is probably better than the Kindle for this, but I never tried it!) I have a problem with epubs though. This need to support every single thing under the sun makes the pipeline exceedingly complex. All you need for a vast majority of fiction is: - headings - paras - emphasis (bold/italic) - block quotes Add simple "image" syntax to it to display maps etc from detective stories Basically a ruthlessly cut down version of markdown. The mini-readers from Xteink came in at the right time for such experimentation.

Cider9986

If you use a Kindle, you have to jailbreak it first before installing it. There's definitely been some improvements with user experience at least with apps since I first jailbroke it. There's like an appstore with games and KOReader that I use. This is the guide I used and it's up to date. https://kindlemodding.org/