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If you read books in electronic format – epub, mobi, pdf – you’ve probably already tried several readers. Someone has a convenient interface, but it slows down. The other has everything fast, but the ads get in your face. And some of them look like they haven’t been updated since Windows XP.
Look, there’s one program that manages to be simple, easy to use and doesn’t require anything out of you – Koodo Reader. It’s an open-source reader that you can put on Windows, macOS, or Linux. And frankly, it’s surprisingly enjoyable.
Koodo Reader is a cross-platform ebook reader. It is free, ad-free, with a clear interface. Works with epub, mobi, pdf, azw3 and other popular formats.
And what is especially convenient – everything works offline. No need to connect to the Internet, no need to register, nothing extra.
Installation is simple: download from our site, install as a normal program. There is even a portable version – you can just throw it on a flash drive and run it without installation.
Starts quickly. Meets you with a blank screen with an empty library and a button “Import books”.
By the way, importing works simply – you select files or a whole folder, and Koodo will organize everything by itself.
On the surface, the Koodo Reader is very clean. There is no button overload. Everything is in its place.
You can:
The interface is easy to customize. If you want minimalism, you can hide everything unnecessary. You need hotkeys – they are already there.
Here’s a list of what it works with:
This is especially handy if you use it as a simple PDF reader with annotations, or to read articles in markdown.
Compared to the same Calibre, the Koodo looks much lighter. The Calibre is a whole machine, the Koodo is just a reader. No overload.
With SumatraPDF – it has annotations, notes and library. Sumatra has everything simpler, but without the ability to keep your own notes.
That’s why they love it – nothing superfluous, but everything you need is there.
Koodo Reader helps you organize your digital library. You can:
It’s convenient when you don’t have 3 books, but at least 30+. Everything is read locally – no clouds or “sign in to your account to continue”.
There are some disadvantages:
But if you just need to read and take notes, you may not even notice these disadvantages.
Here’s who it’s especially good for:
And by the way, Koodo Reader works great on weak laptops.
Because it:
And it does it quietly, without any fuss.
Koodo Reader is like a good old fashioned book player. No intrusiveness, with the right features and respect for you as a reader.
If you want to read rather than fiddling with settings, this might be just what you need. No “advanced paid features” – just a program that does its job.
Give it a try. You might not want anything else after it.
Yes, Koodo Reader is completely free and open-source. You can download Koodo Reader for free from our website. There are no ads, no hidden costs, and no premium version.
Koodo Reader supports a wide range of formats, including EPUB, MOBI, PDF, AZW3, TXT, and Markdown. It’s one of the most versatile open-source ebook readers if you’re dealing with different file types.
Yes, Koodo Reader lets you highlight text, add annotations, and take markdown notes right inside your ebooks. It’s perfect for students, researchers, or anyone who reads non-fiction and needs to make quick highlights or comments.
Absolutely. Koodo Reader is a fully offline ebook reader — once installed, you don’t need an internet connection to read or manage your books. No login required, no cloud sync needed (though a backup/export is possible).
Koodo Reader is a cross-platform ebook reader, available for Windows, macOS, and Linux. There’s also a portable version, so you can run it from a USB drive without installation.
