Sioyek
Sioyek is an open-source PDF viewer designed for reading scientific papers and academic journals. It provides advanced PDF features like synchronized dual-page view, sticky notes, highlights and annotations. Sioyek aims to offer a clutter-free interface for focused reading.
opensource
academic
annotations
highlights
sticky-notes
Sioyek: Open-Source PDF Viewer for Scientific Papers
A clutter-free PDF reader for focused reading, offering features like dual-page view, sticky notes, highlights and annotations.
What is Sioyek?
Sioyek is an open-source PDF and DJVU viewer and reader application designed specifically for academics and researchers. It focuses on providing an easy-to-use interface optimized for reading scientific papers, academic journals, articles and books.
Some of the key features of Sioyek include:
- Clean and distraction-free UI focused on the content
- Fast and responsive viewing of large PDF documents
- Synchronized dual page view for easy side-by-side reading
- Support for annotations like highlights, sticky notes and shapes
- Good support for viewing figures, tables, formulas etc.
- Tabs for opening multiple documents
- Fullscreen reading mode
- Good documentation and active development
If you regularly need to read research papers and reference academic literature, Sioyek is an excellent open-source alternative PDF reader to consider. It may not offer complete PDF editing features, but focuses specifically on fast, focused and frustration-free reading - the most important aspect for researchers and those working with scientific documents.
Sioyek Features
Features
- Dual page view
- Sticky notes
- Annotations
- Highlights
- Fullscreen reading mode
- Dark mode
- Supports PDF, DjVu, XPS, CBZ & CBR files
Pricing
- Open Source
Pros
Open source
Customizable interface
Good for academic/research reading
Lightweight and fast
Available on Windows, Linux and Mac
Cons
Limited features compared to paid options
Lacks OCR capabilities
No mobile apps
Less intuitive than mainstream PDF readers
Official Links
The Best Sioyek Alternatives
Top Office & Productivity and Pdf Readers and other similar apps like Sioyek
Here are some alternatives to Sioyek:
Suggest an alternative ❐
Adobe Acrobat Reader
Adobe Acrobat Reader is a free software application developed by Adobe Systems for viewing, printing, signing, and annotating Portable Document Format (PDF) files. It is the most popular PDF viewer and one of the most widely used free software downloads with over 2 billion installations across platforms and devices.Acrobat Reader...
Adobe Acrobat DC
Adobe Acrobat DC is a suite of applications and services developed by Adobe Systems for working with PDF files, which is a widely used file format for document exchange. Acrobat DC stands for Document Cloud, reflecting Adobe's focus on cloud-based services and collaborative workflows. Key Components and Features: Adobe Acrobat...
SumatraPDF
SumatraPDF is a free and open-source document viewer that supports many file formats. It was originally designed as a replacement for the Windows PDF reader while being much lighter, faster, and more customizable.Some key features of SumatraPDF include:Support for PDF, EPUB, MOBI, CHM, XPS, DjVu, CBZ, CBR file formatsMinimal design...
Okular
Okular is a feature-rich document viewer application designed for the KDE desktop environment on Linux operating systems. It can open and display a wide variety of document formats including PDF, EPUB, PostScript, DjVu, CHM, XPS, ODT, FictionBook, ComicBook, Plucker, and others.Some of the key features of Okular include:Smooth scrolling and...
Foxit Reader
Foxit Reader is a free, fast and lightweight PDF viewer that allows you to view, annotate, sign, and print PDF documents. Developed as an alternative to Adobe Acrobat Reader, Foxit offers the essential PDF features without the large file size and system resource usage of Acrobat.Key features of Foxit Reader...
Evince
Evince is a lightweight document viewer application designed for the GNOME desktop environment. It supports the most common document formats including PDF, PostScript, DjVu and TIFF. Some key features of Evince include:Fast and efficient, optimized for GNOMESmooth scrolling and responsive UIThumbnails and two-page layout for easy browsingAnnotations and form-filling supportMinimalistic...
MuPDF
MuPDF is an open source software library and set of tools for rendering PDF documents. Developed by Artifex Software, MuPDF is designed to be lightweight, fast, and efficient.As a PDF viewer, MuPDF allows users to quickly open and scroll through PDF files while using minimal system resources. It renders PDF...
Skim
Skim is a PDF reader and note-taking app designed specifically for macOS. It provides a clean, uncluttered interface and fast performance for working with PDF documents.Some key features of Skim include:Annotations - Skim allows you to highlight passages, add text notes, draw shapes and lines, and more to annotate PDFs.Text...
Zathura
Zathura is a highly customizable, lightweight document viewer. It provides a minimalistic and space-saving interface as well as an easy usage that mainly focuses on keyboard interaction. The shortcuts make it easy to navigate through documents and change options. Zathura's customizability makes it a great choice for those seeking a...
Firefox PDF Viewer (PDF.js)
Firefox PDF Viewer (PDF.js) is an open source PDF viewer that is built into Firefox web browser. It was launched in 2012 as part of the Firefox web browser and allows users to view PDF documents directly within the browser, without needing any external PDF viewer plugins.PDF.js uses HTML5canvas and...
STDU Viewer
STDU Viewer is a free, open-source and portable universal file viewer that allows users to easily view over 20 different file formats, including PDF, Microsoft Office documents, images, emails, multimedia files, ebook formats and more.Some of the key features of STDU Viewer include:Tabbed interface for opening multiple filesThumbnails and outline...
WinZip PDF Pro
WinZip PDF Pro is a full-featured PDF editing and management software developed by Corel Corporation. It provides users with a wide range of tools to view, edit, create, compress, share, sign, and protect PDF documents.Some of the key features of WinZip PDF Pro include:Viewing, editing, and commenting on PDFsCombining multiple...
