Who should use QiuReader?

QiuReader is an open-source project built for firefox users who read EPUB ebooks.

Does QiuReader have a free plan?

Yes — QiuReader is open source under the Open Source license and free to use.

What platforms does QiuReader run on?

QiuReader runs on the web and embeddable surfaces.

Is QiuReader still maintained?

Unverified. QiuReader has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

When did QiuReader launch?

QiuReader first shipped in 2012.

Is QiuReader open source?

Yes — QiuReader is open source under the Open Source license, developed on GitHub.

Back to the index

QiuReader

Name: QiuReader
Author: Qin

mozilla.orgE-book & PDF readers

QiuReader is a Firefox extension that opens and displays local EPUB ebooks in the browser. It uses epub.js and Rangy to provide browser-based reading through the extension toolbar.

Open SourceWebEmbeddable

Visit mozilla.org

7.0kstars

1.2kforks

5features

2012since

Overview

5 features

QiuReader is an E-book & PDF readers project. It focuses on reading local EPUB ebooks directly in Firefox without a separate ebook reader. QiuReader is an open-source project aimed at firefox users who read EPUB ebooks. QiuReader is open source under the Open Source license. It ships for the web and embeddable surfaces.

Qin builds and maintains QiuReader, and it first shipped in 2012. Development happens publicly on GitHub with 7k stars. Key capabilities include EPUB reading, local file opening, and browser toolbar launch. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

EPUB reading
Local file opening
Browser toolbar launch
Text selection
Reading interface

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

License

Open Source

Verified signals

HTTPSPrivacy Policy Terms of Service Open SourceFree tierGitHub · ★ 7.0kMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed10 Sept · 09:15 UTC
QiuReader verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about QiuReader

What does QiuReader do?: QiuReader focuses on reading local EPUB ebooks directly in Firefox without a separate ebook reader. It is catalogued under E-book & PDF readers on PulseGate.
Who should use QiuReader?: QiuReader is an open-source project built for firefox users who read EPUB ebooks.
Does QiuReader have a free plan?: Yes — QiuReader is open source under the Open Source license and free to use.
What platforms does QiuReader run on?: QiuReader runs on the web and embeddable surfaces.
Is QiuReader still maintained?: Unverified. QiuReader has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
Who makes QiuReader?: QiuReader is developed by Qin.
When did QiuReader launch?: QiuReader first shipped in 2012.
Is QiuReader open source?: Yes — QiuReader is open source under the Open Source license, developed on GitHub.

At a glance

Pricing: Open Source
Platforms: Web
Open source: Yes · ★ 7.0k
License: Open Source
First seen: 10 Sept 2026
Built for: Firefox users who read EPUB ebooks
Model: Open source
Solves: Reading local EPUB ebooks directly in Firefox without a separate ebook reader.

Registered as

GitHub: futurepress/epub.js
Firefox Add-ons: qiureader

Developer

Qin

Community-driven

GitHub

Open source

View on GitHub

Stars: 6,960
Forks: 1,189
Open issues: 517
Last commit: 24 Mar 2026
Commits 90d: 0
Contributors: 118
Authorship: Community-driven
Default branch: master
Latest release: v0.3.88 · 1 Jul 2020

Index record

Indexed: 10 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 10 Sept 2026

Identity audit (13)

Slug: qiureader-mozilla-org
Lifecycle state recorded: 10 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 10 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 10 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/qiureader

Ship this? Send a correction — no account, and you get a link to follow it.

Similar projects

Closest matches by what these projects do