Readest v0.12.6

Readest is a modern open source ebook reader designed for readers who want more than a basic EPUB viewer. It combines support for multiple ebook and document formats with annotations, customizable reading layouts, text-to-speech, translation, side-by-side reading, library management, and cross-device synchronization. It is available across Windows, macOS, Linux, Android, iOS, and the web.

Readest is built around the idea of making digital reading feel consistent across devices. Instead of maintaining separate applications for desktop, mobile, and web reading, users can keep the same library and reading progress across supported platforms.

The project is a modern rewrite of Foliate and uses Next.js and Tauri as part of its technology stack. It is released under the AGPL-3.0 license, making the source code available for inspection, modification, and contribution.

Key Features of Readest

Wide Format Support

Readest supports a broad range of formats, including:

• EPUB

• PDF

• MOBI

• AZW3

• FB2

• CBZ

• TXT

This makes it useful as a general reading application rather than an EPUB-only reader.

Customizable Reading Experience

Readers can adjust typography, fonts, margins, spacing, themes, and reading layouts. Both scrolling and paginated reading modes are available, allowing users to choose an experience that suits the book and device.

Parallel Reading

One of Readest's most interesting features is Parallel Read. It allows two books or documents to be displayed side by side with synchronized navigation.

This is particularly useful for comparing translations, studying textbooks, reading technical documentation, or working with two related documents.

Notes and Highlights

Readest provides tools for highlighting passages, creating notes, and bookmarking important sections. These features make it suitable for studying and research as well as casual reading.

Annotations can also be exported, while integrations with services such as Readwise and Hardcover provide additional ways to manage reading information.

Text to Speech

The built-in text-to-speech functionality allows users to listen to supported books instead of reading them manually. Readest supports on-device, browser, and cloud TTS options depending on the platform and configuration.

Translation and Lookup

Readers can select passages and use integrated tools for translation or terminology lookup without leaving the book. DeepL, Wikipedia, and Wiktionary integrations make this particularly useful for language learners and readers working with unfamiliar subjects.

Cross-Device Sync

Readest can synchronize reading progress, highlights, notes, and library information across supported devices. It also supports integration with OPDS catalogs and personal Calibre libraries.

The project also supports synchronization with KOReader, which is especially useful for users who read on dedicated e-ink devices.

Local-First Approach

Readest emphasizes privacy and control over personal reading data. The application can be used locally, while cloud synchronization is available when users want it. The project states that it does not require forced accounts or data harvesting.

Web Version

A web version makes it possible to access the reading experience without installing a desktop or mobile application. This complements the native applications and makes the platform more flexible for users working across different devices.

Download Readest v0.12.6 - Software Mirrors
Readest v0.12.6 for Windows Readest_0.12.6_x64-setup.exe | 56.41 MB Readest_0.12.6_x64-portable.exe | 93.46 MB Readest_0.12.6_arm64-setup.exe | 55.01 MB Readest_0.12.6_arm64-portable.exe | 84.61 MB
Readest v0.12.6 for macOS Readest_0.12.6_universal.dmg | 76.86 MB
Readest v0.12.6 for Linux Readest_0.12.6_arm64.deb | 41.27 MB Readest_0.12.6_amd64.deb | 40.49 MB Readest_0.12.6_amd64.AppImage | 147.58 MB Readest_0.12.6_aarch64.AppImage | 139.38 MB Readest-0.12.6-1.x86_64.rpm | 40.48 MB Readest-0.12.6-1.aarch64.rpm | 41.27 MB
Readest v0.12.6 for Android Readest_0.12.6_universal.apk | 302.38 MB Readest_0.12.6_arm64.apk | 82.19 MB
Others Download related to Readest v0.12.6 send-to-readest-0.2.1.zip | 465.68 kB Readest_0.12.6_universal.app.tar.gz | 76.62 MB Readest-0.12.6.calibre-plugin.zip | 43.22 kB Readest-0.12.6-1.koplugin.zip | 5.5 MB
Readest v0.12.6 Source Code Readest v0.12.6 Source code (zip) Readest v0.12.6 Source code (tar.gz)
Readest v0.12.6 Release Notes: Release Highlights Audiobooks: Added Audiobookshelf support for streaming audiobooks and podcasts, and you can now pair an audiobook with its ebook to read along as it plays Text-to-Speech: Added a lyric-style view that shows the sentences around the one being read, plus per-book offline voice downloads and steadier pauses between sentences Library: You can now browse the web inside Readest to add books, choose which chapters to import from a web novel, hide covers for privacy, and watch download progress right on the shelf Sharing: Added Nearby BookDrop to send and receive books between nearby devices over your local network, including KOReader devices Reading: Added customizable keyboard and mouse shortcuts, Yomitan dictionary support, a full-screen book cover view, and right-to-left page order for comics and fixed-layout books Reading: The Notebook is now a full writing workspace, where your notes save as you type, sync across devices, and link back to the passage they came from Footnotes: Footnote popups no longer get cut off, let you select and look up text, and can jump straight to the note's place in the book PDF: You can now select text across page boundaries, copy paragraphs without broken line breaks, and see the printed page numbers as reference pages Sync: Your book groups and shelves now sync, file sync between devices settles reliably, highlights you delete in KOReader come across, and your progress survives an OPDS re-download More: Fixed crashes on launch, garbled AZW3 books, the reading position drifting after rotating the screen, and unreadable highlights on e-ink screens What's Changed fix(ios): App Review launch crash, CarPlay crash on connect, and main thread hangs by @chrox in https://github.com/readest/readest/pull/5590 fix(opds): make the title bar draggable in the online library view by @chrox in https://github.com/readest/readest/pull/5592 fix(opds): filter incompatible download formats and offer one-click EPUB by @chrox in https://github.com/readest/readest/pull/5593 fix(sync): drop the Origin header from OAuth token requests by @chrox in https://github.com/readest/readest/pull/5604 fix(android): stop claiming APKs and other downloads as openable books by @chrox in https://github.com/readest/readest/pull/5610 feat(localsend): send and receive books over the local network by @chrox in https://github.com/readest/readest/pull/5611 fix(library): release TXT sources and chapter HTML during import by @ChuwuYo in https://github.com/readest/readest/pull/5607 fix(library): checkpoint, serialize, and pool folder imports by @chrox in https://github.com/readest/readest/pull/5615 fix(translation): gate Enable Translation on book availability by @chrox in https://github.com/readest/readest/pull/5617 docs(readme): restore the Sponsors / TestMu AI section by @chrox in https://github.com/readest/readest/pull/5619 fix(translate): send Bing language codes in the Azure provider by @chrox in https://github.com/readest/readest/pull/5620 fix(library): stop a long press from selecting and then deselecting a book by @chrox in https://github.com/readest/readest/pull/5621 fix(ci): stop cargo pulling the flutter SDK for the localsend dep by @chrox in https://github.com/readest/readest/pull/5622 fix(reader): isolate the book cell to drop the Linux black corner by @PolybiusPro in https://github.com/readest/readest/pull/5618 fix(popup): stop mounting the filtered pointer triangle at rest by @chrox in https://github.com/readest/readest/pull/5628 fix(localsend): let Readest devices discover each other by @chrox in https://github.com/readest/readest/pull/5626 fix(sync): recover KOReader progress when a chapter is not well-formed XML by @chrox in https://github.com/readest/readest/pull/5630 fix(ci): gate build_tauri_app on tauri paths and give webdriver its own timeout by @chrox in https://github.com/readest/readest/pull/5644 feat(ci): Added new step to release workflow to send release notes to a Discord channel by @sloaner in https://github.com/readest/readest/pull/5637 fix(reader): commit settled image zoom into the layout size, closes #5633 by @chrox in https://github.com/readest/readest/pull/5639 fix(novel): retry transient fetch failures and backfill work metadata by @chrox in https://github.com/readest/readest/pull/5650 fix(markdown): title imported books after the file, not the first heading by @chrox in https://github.com/readest/readest/pull/5653 fix(sanitizer): render Persian/Arabic half-space by converting misused RLM to ZWNJ by @shahram7 in https://github.com/readest/readest/pull/5651 fix(reader): stop iOS 16 WebContent crash when opening a book by @chrox in https://github.com/readest/readest/pull/5654 feat(reader): flash the target of in-page footnote jumps, closes #5647 by @chrox in https://github.com/readest/readest/pull/5655 fix(koplugin): extract self-update with ffi/archiver on KOReader 2026.07+ by @chrox in https://github.com/readest/readest/pull/5656 fix(reader): render fixed-layout pages as authored in dark mode, closes #5649 by @chrox in https://github.com/readest/readest/pull/5657 fix(reader): disable text autosizing in fixed-layout books, closes #5641 by @chrox in https://github.com/readest/readest/pull/5659 ci: raise nightly and release build timeouts to 90 minutes by @chrox in https://github.com/readest/readest/pull/5664 fix(opds): stop auto-downloaded books from vanishing on restart by @chrox in https://github.com/readest/readest/pull/5665 fix(iap): re-verify restored iOS one-time purchases with the server by @chrox in https://github.com/readest/readest/pull/5669 chore(deps): bump the github-actions group with 6 updates by @dependabot[bot] in https://github.com/readest/readest/pull/5668 fix(ui): size the alert surface off its container, not its content by @WantenMN in https://github.com/readest/readest/pull/5662 fix(koplugin): push reading stats in bounded chunks, closes #5666 by @chrox in https://github.com/readest/readest/pull/5670 feat(reader): jump to the start or end of the book with Home/End by @chrox in https://github.com/readest/readest/pull/5673 fix(sync): never show a future Last Synced time from a clock-skewed peer by @chrox in https://github.com/readest/readest/pull/5674 fix(reader): update progress during Auto Scroll and put slider overlay values on top by @chrox in https://github.com/readest/readest/pull/5676 fix(reader): reach the last page of the book on iOS by @chrox in https://github.com/readest/readest/pull/5678 feat(reader): scroll Auto Scroll smoothly at low speeds by @chrox in https://github.com/readest/readest/pull/5679 chore: update agent memories by @chrox in https://github.com/readest/readest/pull/5682 fix(library): allow unchecking Read books in place for registered folders, closes #5680 by @chrox in https://github.com/readest/readest/pull/5685 fix(reader): keep table label columns from collapsing by @chrox in https://github.com/readest/readest/pull/5686 feat(tts): scroll to the current chapter when opening Offline Audio by @gfreitash in https://github.com/readest/readest/pull/5684 feat(koplugin): LocalSend receive and send for KOReader devices by @chrox in https://github.com/readest/readest/pull/5687 fix(sync): create the replica bundle dir before downloading, closes #5675 by @chrox in https://github.com/readest/readest/pull/5700 chore(koplugin): build nightly plugin zip and default to device targets by @chrox in https://github.com/readest/readest/pull/5699 feat(sync): add cloud shelves and safe provider deletion by @chrox in https://github.com/readest/readest/pull/5701 fix(android): gate gamepad polling on controller connection by @chrox in https://github.com/readest/readest/pull/5702 fix(dictionary): recover StarDict searches after an empty result by @chrox in https://github.com/readest/readest/pull/5705 feat(tts): symmetric minimal mini-player with centered play button by @chrox in https://github.com/readest/readest/pull/5707 fix(reader): remove header controls duplicated by the mobile footer bar by @chrox in https://github.com/readest/readest/pull/5708 feat(sync): optional document metadata on KOSync progress uploads by @chrisbutler in https://github.com/readest/readest/pull/5704 feat(reader): resume Auto Scroll when reopening a book by @chrox in https://github.com/readest/readest/pull/5710 fix(reader): support page turner key combinations by @chrox in https://github.com/readest/readest/pull/5709 feat(reader): right-to-left page order for fixed-layout books by @chrox in https://github.com/readest/readest/pull/5712 fix(reader): avoid wide word gaps from authored text-wrap pretty, closes #5582 by @chrox in https://github.com/readest/readest/pull/5718 fix(reader): restore scrolled PDF highlights by @chrox in https://github.com/readest/readest/pull/5719 fix(sync): remove the mixed-fleet info toast, closes #5720 by @chrox in https://github.com/readest/readest/pull/5726 fix(sync): sync the reference page count and stop import wiping configs, closes #5716 by @chrox in https://github.com/readest/readest/pull/5727 fix(reader): highlight search results visible across chapter boundary by @WantenMN in https://github.com/readest/readest/pull/5725 fix(reader): drop the 500-result cap from in-book search by @chrox in https://github.com/readest/readest/pull/5728 fix(annotator): drop the selection when the instant dictionary opens, closes #5585 by @chrox in https://github.com/readest/readest/pull/5730 fix(reader): neutralize fixed backgrounds and drop negative margins by @chrox in https://github.com/readest/readest/pull/5729 fix(library): optimize bookshelf covers in background, closes #5632 by @chrox in https://github.com/readest/readest/pull/5731 fix(eink): make e-ink highlights and chips visible, closes #5667 by @chrox in https://github.com/readest/readest/pull/5735 feat(wordlens): add the en-vi gloss pack, sync incrementally by @chrox in https://github.com/readest/readest/pull/5737 feat(wordlens): add the en-hu gloss pack by @chrox in https://github.com/readest/readest/pull/5738 fix(wordlens): key the manifest diff on pack routing fields too by @chrox in https://github.com/readest/readest/pull/5739 chore: update agent memories by @chrox in https://github.com/readest/readest/pull/5740 feat(library): add hide-covers privacy option for the bookshelf by @WantenMN in https://github.com/readest/readest/pull/5733 feat(tts): queue chapter downloads with per-book persistence by @gfreitash in https://github.com/readest/readest/pull/5690 feat(library): show download progress overlay on book covers by @WantenMN in https://github.com/readest/readest/pull/5736 feat(annotator): support text selection tools in footnote popups by @chrox in https://github.com/readest/readest/pull/5744 feat(reader): pair local audiobooks with ebooks by @chrox in https://github.com/readest/readest/pull/5754 fix(tts): make sentence and paragraph pauses consistent by @chrox in https://github.com/readest/readest/pull/5753 fix(reader): keep chapter images openable after repeated footnote popups by @chrox in https://github.com/readest/readest/pull/5756 docs: add contributor code of conduct by @chrox in https://github.com/readest/readest/pull/5758 fix(opds): honor the Manage Sync Books toggle for automatic cloud uploads by @chrox in https://github.com/readest/readest/pull/5759 feat(opds): confirm auto-download toggles and allow catalog reordering by @chrox in https://github.com/readest/readest/pull/5760 feat(i18n): add Georgian translations by @chrox in https://github.com/readest/readest/pull/5763 fix(cbz): order split chapter folders base-first by @chrox in https://github.com/readest/readest/pull/5762 fix(opds): drop the webview Origin header on native requests by @NoaHimesaka1873 in https://github.com/readest/readest/pull/5765 feat(dictionaries): add bundled plugin and Yomitan support by @chrox in https://github.com/readest/readest/pull/5764 feat: package for nix by @dastarruer in https://github.com/readest/readest/pull/5605 fix(reader): translate iframe text without duplicating TTS by @Columpio in https://github.com/readest/readest/pull/5772 fix(tts): allow chapters sharing sentences with earlier packs to download by @gfreitash in https://github.com/readest/readest/pull/5768 fix(deps): resolve open Dependabot alerts by @chrox in https://github.com/readest/readest/pull/5778 fix(nix): update pnpmDeps hash and verify dep hashes on PRs by @chrox in https://github.com/readest/readest/pull/5779 fix(library): recover from a failed startup instead of rendering a blank window by @chrox in https://github.com/readest/readest/pull/5789 chore(deps): bump the github-actions group with 7 updates by @dependabot[bot] in https://github.com/readest/readest/pull/5796 docs: use git input instead of github input by @dastarruer in https://github.com/readest/readest/pull/5791 feat: Audiobookshelf integration with audiobook streaming and podcasts by @chrox in https://github.com/readest/readest/pull/5801 fix(reader): extend pull-to-bookmark to fixed layout and yield to late selection by @chrox in https://github.com/readest/readest/pull/5802 feat(reader): expose data-eink on the book document for per-device custom CSS by @chrox in https://github.com/readest/readest/pull/5803 fix(android): keep the reader alive when a Bluetooth controller connects (#5799) by @chrox in https://github.com/readest/readest/pull/5804 fix(reader): render markdown in the note bubble popup, closes #5785 by @chrox in https://github.com/readest/readest/pull/5805 feat(reader): add inline note editing by @libbybar in https://github.com/readest/readest/pull/5780 feat(reader): expose book title and series as data attributes for custom UI CSS, closes #5776 by @chrox in https://github.com/readest/readest/pull/5806 feat(reader): show PDF page labels as reference pages, closes #5822 by @chrox in https://github.com/readest/readest/pull/5824 feat(rsvp): add exact WPM entry and 10 WPM nudge to the speed dropdown, closes #5820 by @chrox in https://github.com/readest/readest/pull/5825 fix(translate): follow Bing regional host and show why a translation failed by @chrox in https://github.com/readest/readest/pull/5826 feat(reader): join PDF line wraps into paragraphs when copying, closes #5814 by @chrox in https://github.com/readest/readest/pull/5828 fix(annotator): hide the range editor handles while a lookup popup is open, closes #5815 by @chrox in https://github.com/readest/readest/pull/5829 feat(reader): show the book cover full screen from the sidebar and book details, closes #5813 by @chrox in https://github.com/readest/readest/pull/5827 perf(sync): merge stat_pages pushes in one upsert_stat_pages RPC by @chrox in https://github.com/readest/readest/pull/5832 feat(reader): select text across PDF pages as one selection, closes #5809 by @chrox in https://github.com/readest/readest/pull/5831 fix(koplugin): pull reading stats in bounded pages by @chrox in https://github.com/readest/readest/pull/5833 feat(stats): tier stat_pages history into R2 segments behind a 7-day hot window by @chrox in https://github.com/readest/readest/pull/5835 chore: update agent memories by @chrox in https://github.com/readest/readest/pull/5840 fix(audiobookshelf): hide ABS books without a server row and backfill covers unauthenticated by @chrox in https://github.com/readest/readest/pull/5841 fix(stats): survive PostgREST's row cap when building archive segments by @chrox in https://github.com/readest/readest/pull/5844 chore(stats): enable the archive compaction cron by @chrox in https://github.com/readest/readest/pull/5845 fix(sync): send S3 object keys in SigV4 canonical form by @chrox in https://github.com/readest/readest/pull/5849 fix(nix): match the Android AVD ABI to the host architecture (#5732) by @chrox in https://github.com/readest/readest/pull/5850 fix(koplugin): stop auto sync from prompting for Wi-Fi on book open and wake by @chrox in https://github.com/readest/readest/pull/5848 fix(backup): export only live library books and reclaim orphaned book files by @chrox in https://github.com/readest/readest/pull/5851 fix(reader): keep the reading position across screen rotations by @chrox in https://github.com/readest/readest/pull/5855 fix(sync): sync highlight deletions from KOReader to Readest by @chrox in https://github.com/readest/readest/pull/5853 feat(reader): pair an Audiobookshelf audiobook and read along (#5807) by @chrox in https://github.com/readest/readest/pull/5856 feat(reader): let users pick the Hardcover book a file syncs to, closes #5846 by @chrox in https://github.com/readest/readest/pull/5857 feat(toc): wrap long headings onto multiple lines instead of truncating by @chrox in https://github.com/readest/readest/pull/5858 fix(bookorbit): list the open book under Unmatched KOReader Books for manual linking by @chrox in https://github.com/readest/readest/pull/5860 fix(wordlens): build kaikki packs from the raw wiktextract dump by @chrox in https://github.com/readest/readest/pull/5861 fix(reader): move a paired audiobook by audio and decode WebP covers (#5863) by @chrox in https://github.com/readest/readest/pull/5865 fix(sync): stop OPDS re-downloads from losing reading progress (#5859) by @chrox in https://github.com/readest/readest/pull/5866 fix(reader): resolve media that book scripts add after the section loads, closes #1812 by @chrox in https://github.com/readest/readest/pull/5868 fix(sync): shelve an imported book on other devices without opening it first by @chrox in https://github.com/readest/readest/pull/5869 feat(library): add From Web Browser import with an in-app browser (#5775) by @chrox in https://github.com/readest/readest/pull/5870 fix(reader): render the IDPF EPUB 3 samples correctly (#480) by @chrox in https://github.com/readest/readest/pull/5872 fix(windows): match the main window's scroll bar style in clip and browser windows by @chrox in https://github.com/readest/readest/pull/5873 fix(library): rubber-band the bookshelf at both edges and keep the reader from overscrolling by @jadhavgaurav in https://github.com/readest/readest/pull/5867 fix(android): stop the launch crash on covers that decode 1px tall by @chrox in https://github.com/readest/readest/pull/5874 chore: update agent memories by @chrox in https://github.com/readest/readest/pull/5875 feat(ui): migrate to daisyUI 5 and Tailwind CSS 4 by @chrox in https://github.com/readest/readest/pull/5884 fix(library): save the new data location when migrating an empty library by @jadhavgaurav in https://github.com/readest/readest/pull/5878 fix(sync): apply pulled file-sync progress to the live reader by @chrox in https://github.com/readest/readest/pull/5886 feat(reader): jump from a footnote popup to the location in the book by @chrox in https://github.com/readest/readest/pull/5889 feat(library): select chapters when importing web novels by @chrox in https://github.com/readest/readest/pull/5892 chore(deps): upgrade to TypeScript 7 by @chrox in https://github.com/readest/readest/pull/5893 fix(ui): size toasts to their message and fade dialogs out whole by @chrox in https://github.com/readest/readest/pull/5894 fix(library): refresh PDF metadata on re-import by @chrox in https://github.com/readest/readest/pull/5895 fix(reader): do not truncate footnote popups by @alexander-pecheny in https://github.com/readest/readest/pull/5887 fix(reader): make cross-page selection actually work by @alexander-pecheny in https://github.com/readest/readest/pull/5888 chore(deps): bump the github-actions group with 6 updates by @dependabot[bot] in https://github.com/readest/readest/pull/5902 fix(android): migrate Google Play Billing to v9 by @chrox in https://github.com/readest/readest/pull/5896 fix: folder import of Markdown, widget opens, comic zoom, selection handle and TTS word highlight by @chrox in https://github.com/readest/readest/pull/5903 fix(ui): restore the daisyUI 4 loading dots animation by @chrox in https://github.com/readest/readest/pull/5906 fix(sync): converge multi-device file sync (#5900) by @jadhavgaurav in https://github.com/readest/readest/pull/5905 feat(tts): lyric-style sentence view in the Read Aloud player (#5755) by @chrox in https://github.com/readest/readest/pull/5908 fix(tts): queue a lyric reload requested during an in-flight fetch by @chrox in https://github.com/readest/readest/pull/5909 feat(shortcuts): add customizable keyboard and mouse bindings by @WhiteHades in https://github.com/readest/readest/pull/5907 fix(translate): Chinese targets, provider rate limits, and translator popup layout by @chrox in https://github.com/readest/readest/pull/5913 fix(android): avoid full PDF parsing during import by @chrox in https://github.com/readest/readest/pull/5914 feat(localsend): brand the LAN transfer feature as Nearby BookDrop by @chrox in https://github.com/readest/readest/pull/5915 fix(ui): paint modal boxes that sit outside an open daisyUI modal by @chrox in https://github.com/readest/readest/pull/5916 fix(mobi): keep AZW3 text and TOC intact when section loads overlap by @chrox in https://github.com/readest/readest/pull/5920 fix(sync): report third-party sync status in the reader menu (#5910) by @chrox in https://github.com/readest/readest/pull/5922 fix(sync): resolve book groups and metadata on their own clock (#5911, #5912) by @chrox in https://github.com/readest/readest/pull/5921 fix(ui): search cloud storage files on demand instead of while typing (#5923) by @chrox in https://github.com/readest/readest/pull/5925 fix(reader): stop the a11y skip link from padding RTL sections with blank pages (#5924) by @chrox in https://github.com/readest/readest/pull/5926 fix(ui): align the keyboard shortcuts header with its group titles by @chrox in https://github.com/readest/readest/pull/5927 feat(reader): Notebook as a linked writing workspace by @chrox in https://github.com/readest/readest/pull/5928 release: version 0.12.6 by @chrox in https://github.com/readest/readest/pull/5929 New Contributors @sloaner made their first contribution in https://github.com/readest/readest/pull/5637 @gfreitash made their first contribution in https://github.com/readest/readest/pull/5684 @chrisbutler made their first contribution in https://github.com/readest/readest/pull/5704 @NoaHimesaka1873 made their first contribution in https://github.com/readest/readest/pull/5765 @libbybar made their first contribution in https://github.com/readest/readest/pull/5780 @jadhavgaurav made their first contribution in https://github.com/readest/readest/pull/5867 Full Changelog: https://github.com/readest/readest/compare/v0.12.1...v0.12.6

Performance and User Experience

Readest has a clean interface that focuses on reading rather than surrounding the user with unnecessary controls. The application feels closer to a modern productivity tool than a traditional ebook utility.

Its biggest strength is the combination of simple reading features with tools aimed at deeper study. Side-by-side reading, annotations, translation, TTS, and customizable typography make it useful for everything from casual novels to technical books and academic material.

The project is also developing quickly. Recent releases have improved library performance, PDF support, reading layouts, synchronization, OPDS management, and accessibility.

Because Readest is still actively evolving, users should expect some features and interfaces to change over time.

Pros

• Free and open source.

• Supports EPUB, PDF, MOBI, AZW3, FB2, CBZ, and TXT.

• Available on Windows, macOS, Linux, Android, iOS, and the web.

• Clean and customizable reading interface.

• Side-by-side Parallel Read mode.

• Highlights, notes, and bookmarks.

• Text-to-speech support.

• Translation and dictionary tools.

• Cross-device synchronization.

• OPDS and Calibre support.

• KOReader synchronization.

• Local-first and privacy-focused design.

• Active development.

Cons

• Some advanced functionality is still evolving.

• Cloud-based features may require additional configuration or services.

• Users looking for a very minimal ebook reader may find the feature set extensive.

• The ecosystem is smaller than established commercial ebook platforms.

Who Should Use Readest?

Readest is an excellent choice for students, researchers, developers, language learners, academics, and anyone who reads across multiple devices.

It is particularly appealing to people who want more control over their ebook library while still having modern conveniences such as synchronization, text-to-speech, annotations, translation, and OPDS support.

For users who already have a Calibre library or use KOReader on an e-ink device, Readest is also worth considering because of its interoperability with those ecosystems.

Final Verdict

Readest is one of the most impressive open source ebook readers currently available. It combines the simplicity of a traditional reader with features normally found across several separate applications.

The ability to read multiple formats, compare books side by side, annotate documents, translate passages, listen through TTS, and synchronize reading progress across platforms gives Readest a strong advantage over basic ebook readers.

It is not simply trying to replace a conventional EPUB viewer. Its focus on deep reading, study, interoperability, and cross-platform access makes it a compelling choice for anyone who wants a more complete reading environment while keeping their books and data under their control.

Free

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Software Informations:
Developer:
Bilingify LLC
Operating System:
Windows / macOS / Linux / Android
Date Added:
2026-08-29T13:06:59.801Z
Categories:

Related to Readest v0.12.6:

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