The Best File Reader Software in 2026
We researched file reader software using vendors’ official websites, including pricing pages, plan tables, and product documentation. Rankings focus on the core job of opening and navigating files, value for money, and verified features. Compare options for reading common document formats across supported platforms.
Our top picks
-
Top ranked
Foxit PDF Reader#1 of 249.3/10A cross-platform PDF reader for reading, reviewing, signing and completing forms.
Free plan
-
Runner-up
Okular#2 of 249.2/10A capable open-source reader for PDFs, e-books, annotations, forms, and accessibility tools.
Free plan
-
Top-ranked free plan
FBReader#3 of 249.1/10A format-flexible ebook reader with free desktop editions and optional paid mobile features.
Free plan
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
The full ranking 24 tools, best first
-
Best forCross-platform PDF reading and document review
A cross-platform PDF reader for reading, reviewing, signing and completing forms.
- Annotations
9.3/10★★★★★Visit Foxit -
Best forCross-platform PDF and document reading
A capable open-source reader for PDFs, e-books, annotations, forms, and accessibility tools.
- Annotations
9.2/10★★★★★Visit Okular -
Best forReaders who want broad-format ebook support
A format-flexible ebook reader with free desktop editions and optional paid mobile features.
9.1/10★★★★★Visit FBReader -
Best forWindows users who want a capable free reader
A format-flexible Windows reader with annotations, forms and portable operation at no cost.
- Annotations
9.0/10★★★★☆Visit Sumatra PDF -
Best forOpen-source readers across ebook and document formats
A format-flexible reader with annotations, PDF controls, and optional reading-position sync.
- Annotations
8.8/10★★★★☆Visit KOReader -
Best forEmbedding a PDF reader in a web application
A self-hosted PDF viewer for web apps, with navigation, annotations and forms.
- Annotations
8.4/10★★★★☆Visit Mozilla PDF.js -
Best forLinux users reading and annotating documents
A free Linux reader for viewing, searching, annotating, and printing documents.
- Annotations
8.3/10★★★★☆Visit GNOME Papers -
Best forAuthors preparing books for Kindle publishing
A free desktop formatter for authors creating Kindle and print-ready book files.
8.2/10★★★★☆Visit Kindle Create -
Best forReaders buying and listening to Kobo audiobooks
A Kobo storefront and player for audiobook listeners who also want eBooks.
8.0/10★★★★☆Visit Kobo -
Best forTeams needing PDF rendering and document manipulation
A cross-platform PDF toolkit for rendering, extraction, annotation, and document editing.
- Annotations
7.9/10★★★★☆Visit MuPDF -
Best forAuthors and publishers creating narrated Apple Books
A free production program for authors and publishers focused on Apple Books audiobook publishing.
7.9/10★★★★☆Visit Apple Books -
Best forImage viewers needing cataloging and metadata tools
A format-rich desktop viewer with cataloging, metadata, comparison, and batch tools.
7.9/10★★★★☆Visit XnView MP -
Best forWindows users who want broad image-format viewing
A free Windows desktop tool for viewing, organizing, and converting many image formats.
7.9/10★★★★☆Visit XnView -
Best forWindows users viewing and processing image files
A Windows image viewer with RAW support, batch tools, and a free personal-use option.
7.9/10★★★★☆Visit FastStone -
Best forWindows users who also need image batch tools
A compact Windows viewer for image conversion, resizing, and batch file operations.
7.9/10★★★★☆Visit IrfanView -
Best forAccessible EPUB and audiobook reading on desktop
A format-rich reader with accessibility tools, bookmarks and annotations at no cost.
- Annotations
7.9/10★★★★☆Visit Thorium Reader -
Best forMobile readers who want offline access and TTS
A format-flexible reader with offline access, annotations and Premium text-to-speech.
- Annotations
7.9/10★★★★☆Visit ReadEra -
Best forAndroid readers wanting extensive format support
A format-rich Android reader with customizable reading tools and Pro features.
- Annotations
7.9/10★★★★☆Visit Moon+ Reader -
Best forAndroid readers needing broad formats and annotations
A broad-format reader with annotations, search, text-to-speech and Google Drive sync.
- Annotations
7.9/10★★★★☆Visit Librera Reader -
Best forPublishers making editable narrated audiobooks
A free web tool for turning eligible EPUBs into editable, narrated audiobooks.
7.9/10★★★★☆Visit site -
Best forWindows users previewing varied file types
A Windows desktop viewer with broad format coverage, Explorer access and paid Pro features.
7.9/10★★★★☆Visit UVviewsoft -
Best forWindows users who need one viewer for many formats
A Windows desktop viewer that pairs broad format support with editing and conversion tools.
7.2/10★★★★☆Try File Viewer Plus -
Best forSolo users wanting a lightweight, free image viewer
A focused, open-source viewer for everyday images across Windows, macOS, and Linux.
7.1/10★★★★☆Visit qView -
Best forCross-platform viewers for many image formats
Cross-platform desktop viewer with RAW, metadata, color management, and plugins.
7.0/10★★★★☆Visit ImageGlass
No tools match those filters.
Compare at a glance
| # | Tool | Free plan | Paid from | Score |
|---|---|---|---|---|
| 1 | Foxit PDF Reader | Yes | Free | 9.3 |
| 2 | Okular | Yes | Free | 9.2 |
| 3 | FBReader | Yes | 9.1 | |
| 4 | SumatraPDF | Yes | Free | 9.0 |
| 5 | KOReader | Yes | Free | 8.8 |
| 6 | Mozilla PDF.js | Yes | Free | 8.4 |
| 7 | Papers | Yes | Free | 8.3 |
| 8 | Kindle Create | Yes | Free | 8.2 |
| 9 | Kobo Books | Yes | 8.0 | |
| 10 | MuPDF | Yes | $299/unit/mo | 7.9 |
| 11 | Apple Books Digital Narration | Yes | Free | 7.9 |
| 12 | XnView MP | Yes | €3.90/unit one-time | 7.9 |
| 13 | XnView Classic | Yes | Free | 7.9 |
| 14 | FastStone Image Viewer | Yes | 7.9 | |
| 15 | IrfanView | Yes | $18/device one-time | 7.9 |
| 16 | Thorium Reader | Yes | Free | 7.9 |
| 17 | ReadEra | Yes | 7.9 | |
| 18 | Moon+ Reader | Yes | 7.9 | |
| 19 | Librera Reader | Yes | 7.9 | |
| 20 | Google Play Books Auto-narrated Audiobooks | Free | 7.9 | |
| 21 | Universal Viewer | Yes | $26 one-time | 7.9 |
| 22 | File Viewer Plus | No | 7.2 | |
| 23 | qView | Yes | Free | 7.1 |
| 24 | ImageGlass | Yes | $99/seat/yr | 7.0 |
Head-to-head All 22 comparisons →
- Foxit PDF Reader vs FBReader
- Foxit PDF Reader vs KOReader
- Foxit PDF Reader vs Papers
- Foxit PDF Reader vs Kindle Create
- Okular vs FBReader
- Okular vs KOReader
- Okular vs Papers
- Okular vs Kindle Create
- FBReader vs SumatraPDF
Explore other topics All topics →
- AI Tools 303 directories · 8,269 tools ranked AI Writing Tools · AI Video Generators · Text-to-Speech Software
- Web Hosting & Domains 275 directories · 6,107 tools ranked Shared Web Hosting · Managed Cloud Hosting · Dedicated Server Hosting
- Productivity 157 directories · 4,948 tools ranked Note-Taking Apps · Calendar Apps · Project Management Software
- Marketing 135 directories · 3,977 tools ranked SEO Tools · Influencer Marketing Platforms · Email Marketing Software
- Sales & CRM 152 directories · 4,161 tools ranked Real Estate CRM Software · CRM Software · Proposal Software
- Customer Service 55 directories · 1,547 tools ranked Chatbot Builders · Knowledge Base Software · Call Center Software
How we rank file reader software
Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update