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.
I’m a heavy KOReader user and absolutely adore it, but I think it definitely trades user-friendliness for power and flexibility. The Kindle proprietary store has a far more user friendly UI imo, though it’s getting progressively worse (and the fact that kindles now default to showing you the store pisses me off to no end). KOReader plugins really close the gap though.
I think the only proprietary software companies with any shot at longevity are Japanese companies. First Japan leads by far the ranking of oldest companies in the world (https://en.wikipedia.org/wiki/List_of_oldest_companies). Then we have actual software like Zelda Breath of the Wild which is a technical marvel comparable to the original Rollercoaster Tycoon considering how well it runs on the severely limited architecture of the Switch.
I think this boils down to profit not being the only driving force for these companies, but prestige and a sense of duty and responsibility towards something larger and less immediate.
You're assuming long lasting soy sauce companies have anything to do with software development. Japan produces great video games despite how terrible otherwise the developer environment and culture is there and nearly all of the other software shows it.
Wouldn't wanna live there permanently. Wouldn't want to have been born Japanese. But my god the products and services are head and shoulders above my baseline expectations; it's simply nicer.
> Breath of the Wild which is a technical marvel comparable to the original Rollercoaster Tycoon considering how well it runs on the severely limited architecture of the Switch.
What? It can’t even maintain a stable 30fps on its own target hardware. That’s not an example is point to for something running “well.”
Yeah, it's genuinely my favorite game of all time but to compare it to Rollercoaster Tycoon as "a technical marvel" is doing a massive disservice to Chris Sawyer.
As someone who thought the same (stock was enough for me) until I had some free time and switched, here are some things I'm really enjoying, in no particular order:
- Format support: EPUB, CBR/CBZ (comics, graphic novels), PDF
- Dark mode
- Fully programmable gestures and shortcuts
- Automatically syncs with my readeck instance (think readitlater/instapaper) to dowload the articles I save for example here on HN
- Calibre integration over wifi
- RSS/Atom
If you are into manga, there is an extension for directly downloading them on the device
I'm really happy I made the switch.
- Custom dictionaries
In my case from different places like itch.io , smashwords.com, gumroad.com, some fundraisings that provide epubs. You also have some nice free places like standardebooks.org. Or you can sail the digital seven seas if there's no availability.
https://www.gutenberg.org/ has more books than you will be able to read in your lifetime for no cost. Some are classics for a reason, some are garbage - same as any other publisher.
There are a number of other free ebook sites out there as well.
Never updating if you don't want an update. I see no reason for my e-reader to have updates. I have a Kobo and after I updated it once about 5 years ago I haven't since because it already does everything I need it to.
Not only is it the superior piece of software, the freedom it offers by dissociating the choice of hardware from the choice of software is another example why free software and interoperability is something we should strive for.
I like the Readwise integration via plugin and the EPUB support, but for the first few days with it, I was busy understanding the menu hierarchy and trying to figure out how to match the styling and spacing of my native Kindle books. The out-of-the-box experience is unfortunately just "tasteless," and I needed some time to warm up to it.
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.
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:
I think they changed it on the newer Kindle which I have.
there's open source alternatives to the send to kindle app.
> Unfortunately on MacOS it seems you have to use Amazon's app to access the filesystem.
Hmmm not really my experience, unless it's a new thing. I am still able to access it via finder. Although I need to exit KoReader first and go back to the stock UI.
>Unfortunately on MacOS it seems you have to use Amazon's app to access the filesystem.
I can recommend using a Filebrowser plugin for KOReader, that way you can access the file system over a web interface and upload that way. No cables needed or anything, quite convenient.
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.
I finally installed this on my Kobo Libra 2. The UX is clunky but overall it works great. Very fast. Don’t need KEPUBS anymore as epubs render just as fast, where as that’s not the case on the stock software.
I finally got around to installing it as I got an xteink x3 and wanted to have cross device syncing back to my Grimmory server. Works great with OPDS and KOSync.
Although I miss using the native kobo sync where I could just add a book to my virtual shelf and have it auto sync to my device. OPDS seems very rudimentary in comparison, but it works nonetheless.
KOReader is awesome and it's my go to for most e-reader reading. I've recently been trying out Plato (https://github.com/baskerville/plato) as well and it has a really nice experience for reading PDFs. It crops the margins and pages through the PDF in chunks nicely.
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.
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:
I love KOReader! I use it on my Kobo Clara Colour with Calibre. Love Wikipedia lookup, customization options, and the fact that wifi is off by default.
Did anyone made a comparison across different devices for running this? I am curious on what is the best device today to run it, and also the best when accounting for cost of the device too.
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.
Fiction from the 1800s? Now that sounds interesting. Can you name three titles that you would recommend? And: how did you get into this? Doesn’t sound like a TikTok trend, haha.
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.
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.
KOReader is so much better, including in how it renders typography and does typesetting than what ships on Kobo devices by default, it's sort of wild.
I actually made a mod to try to upgrade Kobo's built-in reader so it's more correct, i.e. more faithful to how KOReader renders text. Sharing it here since it may be interesting for anyone with Kobo e-readers: https://github.com/nicoverbruggen/NickelTypeFix
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.
I really appreciate you mentioning Murasaki - thank you. I've been looking for something like this for a long time, because every single EPUB "reader" out there does so much more than just read EPUBs. This one does just that, I love it.
The old Microsoft Edge had epub support, and even a nascent ebook shop and a nifty note-taking/annotation mechanism (there was even a restitution payment made for folks who had taken notes), but Microsoft gave up on it when they shifted to a rebadged Chrome.
It doesn’t seem like it’s a huge ask imo, and I’m also pretty surprised that they have such limited support, a mostly text format like epub really should be simple to add functionality for.
Less surprising but still annoying is how many hoops you need to jump through to get a good reading experience for manga, particularly on macOS. I had to try many options that were either too buggy, too difficult to install correctly, various aggressive paywalls, or straight up don’t function with high quality scans.
Eventually I landed on one(will edit the name in when I have access to my laptop) that functions well but has some memory issues in importing books, possibly a memory leak.
Maybe I’ve just become shit at finding apps in the modern unsearchable age, but it really feels like reading of all types has diminished enough that we are an unserviceable market.
I think this boils down to profit not being the only driving force for these companies, but prestige and a sense of duty and responsibility towards something larger and less immediate.
You're assuming long lasting soy sauce companies have anything to do with software development. Japan produces great video games despite how terrible otherwise the developer environment and culture is there and nearly all of the other software shows it.
Wouldn't wanna live there permanently. Wouldn't want to have been born Japanese. But my god the products and services are head and shoulders above my baseline expectations; it's simply nicer.
https://en.wikipedia.org/wiki/Japanese_adult_adoption
What? It can’t even maintain a stable 30fps on its own target hardware. That’s not an example is point to for something running “well.”
Software Japan
- Format support: EPUB, CBR/CBZ (comics, graphic novels), PDF
- Dark mode
- Fully programmable gestures and shortcuts
- Automatically syncs with my readeck instance (think readitlater/instapaper) to dowload the articles I save for example here on HN
- Calibre integration over wifi
- RSS/Atom
If you are into manga, there is an extension for directly downloading them on the device
I'm really happy I made the switch. - Custom dictionaries
There are a number of other free ebook sites out there as well.
Standard Ebooks for high quality public domain books, though they also offer azw.
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:
I think they changed it on the newer Kindle which I have.
there's open source alternatives to the send to kindle app.
KOReader comes with SSH, so you can just SSH into it.
Hmmm not really my experience, unless it's a new thing. I am still able to access it via finder. Although I need to exit KoReader first and go back to the stock UI.
I can recommend using a Filebrowser plugin for KOReader, that way you can access the file system over a web interface and upload that way. No cables needed or anything, quite convenient.
Very grateful for this software!
[0]: https://github.com/simonpacis/kohico
I finally got around to installing it as I got an xteink x3 and wanted to have cross device syncing back to my Grimmory server. Works great with OPDS and KOSync.
Although I miss using the native kobo sync where I could just add a book to my virtual shelf and have it auto sync to my device. OPDS seems very rudimentary in comparison, but it works nonetheless.
It's nice to have another option though and if the UX improves one day maybe I'll use it as my main reader.
This is the guide I used and it's up to date.
https://kindlemodding.org/
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
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.
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.
And then the UX… great project but could use a systems guy used to jailbreaking installations and a UX designer
Worked fine for me.
31-mar-2025 https://news.ycombinator.com/item?id=43539103 106 comments
10-apr-2024 https://news.ycombinator.com/item?id=39996947 33 comments
I actually made a mod to try to upgrade Kobo's built-in reader so it's more correct, i.e. more faithful to how KOReader renders text. Sharing it here since it may be interesting for anyone with Kobo e-readers: https://github.com/nicoverbruggen/NickelTypeFix
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
Less surprising but still annoying is how many hoops you need to jump through to get a good reading experience for manga, particularly on macOS. I had to try many options that were either too buggy, too difficult to install correctly, various aggressive paywalls, or straight up don’t function with high quality scans.
Eventually I landed on one(will edit the name in when I have access to my laptop) that functions well but has some memory issues in importing books, possibly a memory leak.
Maybe I’ve just become shit at finding apps in the modern unsearchable age, but it really feels like reading of all types has diminished enough that we are an unserviceable market.
It also searches Wikipedia.