Orion Viewer - Pdf & Djvu

eBook reader for pdf, djvu, xps, comic book and tiff files

Michael Bogdanov · universe.constellation.orion.viewer

Not rated yet 100K+ downloads v0.97.3 11.2 MB Android 4.1+ PEGI 3 · Everyone

Download APK 11.2 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v0.97.3 (2494)
Updated: Oct 7, 2026 (yesterday)
APK size: 11.2 MB
Requires: Android 4.1+ (API 16)
CPU support: ARM 64-bit
Category: Books & Reference (app)
Listed since: Dec 10, 2022 (at least)
Permissions: 8 (3 sensitive)
Website: github.com/max-kammerer/orion-viewer
Developer contact: [email protected]

About this APK

Orion Viewer - Pdf & Djvu is an app by Michael Bogdanov in the Books & Reference category, listed since at least December 2022. It includes native code only for ARM 64-bit, so it won't install on phones that can only run 32-bit apps.

Since version 0.43.4, the minimum Android version rose from 1.5 to 4.1. It asks for 8 permissions, 3 of them sensitive: access all files, read shared storage and modify shared storage. It asks for the same permissions as version 0.97.2.

What's new in v0.97.3

* Added experimental support of webp format * Updated icons * Added errors rendering on pdf page problems

Description

From the listing uploaded by “appupdater”.

Open source pdf, djvu, xps, comic book (cbz, cbr, cbt, cb7) and tiff file viewer. Page scrolling is realized by screen touch (for more details see Menu/Settings/Tap Zones). Application features: * Outline navigation * Bookmarks support * Page navigation by screen taps + Tap Zones + Key binding * Text selection * Single word selection by double tap with translation in external dictionary * Custom zoom * Custom manual and auto border crop * Portrait/landscape orientation * Support different navigation patterns inside page (left to right, right to left) * External Dictionaries support * Built-in file manager with recently opened file view Orion Viewer is free, open source (GPL) project. To donate this project, you can buy Orion Viewer: Donation 1$, 3$ or 5$ package from market

Version history

6 versions are listed, going back to v0.43.4. New versions arrive here about every week. Since v0.96.1 it requires Android 4.1+.

v0.97.3 LATEST Oct 7, 2026 11.2 MB TRUSTED v0.97.2 Sep 27, 2026 10.9 MB TRUSTED v0.97.1 Sep 19, 2026 10.9 MB TRUSTED v0.97.0 Sep 12, 2026 10.9 MB TRUSTED v0.96.1 Sep 4, 2026 10.2 MB TRUSTED

All 6 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Oct 7, 2026.
Certificate issued to “Orion” This is the certificate of the Google Play version.
Same certificate as the 3 other versions checked

Store checks and file details

Developer signature verified Oct 7, 2026
Validated against Google Play Oct 7, 2026
Signed byCN=Michael Bogdanov, OU=Orion, O=Orion, L=Saint-Petersburg, ST=Russia, C=RU
Signing certificate (SHA-1)E3:AA:11:6E:6C:10:78:67:6E:83:66:EC:BC:5B:98:B0:F8:3F:D4:92
File MD5182f7f616d9b6912edaa3409a1c085bc
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (3 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (8)

Orion Viewer - Pdf & Djvu requests 8 permissions, 3 of them sensitive.

Access all files Sensitive android.permission.MANAGE_EXTERNAL_STORAGE
Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
Full network access android.permission.INTERNET
Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
Internal broadcast protection (app-defined) universe.constellation.orion.viewer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Prevent the device from sleeping android.permission.WAKE_LOCK
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch

Orion Viewer - Pdf & Djvu APK: questions and answers

Is there a version of Orion Viewer - Pdf & Djvu for older Android phones?

The current version needs Android 4.1 or later. Version 0.43.4 is the newest listed build that installs on Android 1.5 and later. Get version 0.43.4 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the Orion Viewer - Pdf & Djvu APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 3 other versions checked. After downloading, check that the file's MD5 is 182f7f616d9b6912edaa3409a1c085bc.