Best File Reader Software in 2026

Librera suits readers who use multiple ebook and document formats and want tools such as annotations, dictionaries, or text-to-speech.

Foxit PDF Reader

It suits people who need to read, annotate, sign or complete PDF forms across desktop, mobile and web platforms.

FBReader

FBReader suits readers who want an ebook app across desktop and mobile platforms, with format support and synchronized reading details.

MuPDF

MuPDF suits developers building document features into desktop, cloud/server, or embedded projects.

It suits Windows users who want image browsing, editing, conversion, or batch work in one program.

Mozilla PDF.js

It suits developers embedding PDF rendering in web applications, browser extensions, or self-hosted viewers.

IrfanView suits Windows users who need image viewing alongside batch processing, conversion, and editing tools.

Kobo Books suits listeners who want audiobook access on a phone, tablet, or supported Bluetooth Kobo eReader.

ReadEra suits readers who want to manage and annotate a varied collection of books and documents.

It suits publishers with eligible EPUB titles, audio rights, and a need for digitally narrated editions.

It suits Windows users who want a free reader with broad document-format support, annotation and form tools, accessibility features, or portable use.

qView

qView suits people who want a minimal image viewer on Windows, macOS, or Linux.

Universal Viewer suits Windows users who need to inspect varied image, media, document, and text files in one application.