Head-to-head · File Reader Software
Okular vs FBReader
Okular leads on 1 check, FBReader on 0, and 1 is even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreOkular · 8.2/10
- Free planboth
- Most featuresOkular · 1 of 4
Okular scores higher on our rubric for file reader software: 8.2 against 7.5 out of 10; our editors rank them #2 and #3.
Okular offers annotations; FBReader doesn't publish it.
Okular is the better fit for cross-platform PDF and document reading. FBReader is the better fit for readers who want broad-format ebook support.
- Okular fits best
Cross-platform PDF and document reading
- FBReader fits best
Readers who want broad-format ebook support
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Side by side
| Feature | Okular 8.2/10 Visit ↗ | FBReader 7.5/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 8.2 | 7.5 |
| Ranking | #2 in File Reader Software | #3 in File Reader Software |
| Best for | Cross-platform PDF and document reading | Readers who want broad-format ebook support |
| Pricing model | Free | Free plan + paid |
| Starting price | Not published | Not published |
| Free plan | ✓ | ✓ |
| Free trial | — | — |
| Deployment | Desktop | Desktop, Mobile |
| Platforms | Windows, macOS, Linux | Windows, macOS, Linux, iOS, Android |
| Built for | Solo, Small business, Mid-market, Enterprise | Solo, Small business |
| Features Okular 1/4 · FBReader 0/4 | ||
| Annotations | ✓ (best) | Not published |
| Text search | Not published | Not published |
| Accessibility support | Not published | Not published |
| Cloud sync | Not published | Not published |
| Specs | ||
| Supported formats | Not published | Not published |
| Platforms | Not published | Not published |
| Our review | ||
| Pros |
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| Cons |
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| Our verdict | Okular is KDE’s free, open-source desktop document viewer for individuals and organizations that need to read PDFs and a range of other formats. It runs on Windows, macOS, and Linux, and supports PDFs, EPUB, DjVu, e-books, comics, images,… Read the review → |
FBReader is an ebook reader for people who want to read across desktop and mobile devices without being tied to a single book format. It supports EPUB and FB2, along with MOBI, HTML, RTF, and plain text, and it can open Readium… Read the review → |
Strengths and trade-offs
Okular — where it wins
- Reads PDFs, EPUB, DjVu, e-books, comics, images, and more
- Annotations, PDF forms, and digital signature support in one reader
- Text-to-speech, selection tools, thumbnails, and content navigation
Where it doesn't
- Desktop deployment only
- No AI features
- macOS availability is described as nightly builds
FBReader — where it wins
- Reads EPUB, FB2, MOBI, HTML, RTF, and plain text
- Offers bookmarks, synced reading position, and customizable layouts
- Runs on Windows, macOS, Linux, iOS, and Android
Where it doesn't
- PDF and comics support is included with Android Premium
- The free iOS edition limits the library to ten books
- Some mobile features, including network translators, require a paid edition
- Okular8.2/10 · Free plan
A capable open-source reader for PDFs, e-books, annotations, forms, and accessibility tools.
Visit OkularFull verdict → - FBReader7.5/10 · Free plan
A format-flexible ebook reader with free desktop editions and optional paid mobile features.
Visit FBReaderFull verdict →
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All file reader software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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