DocReader User Guide

USER GUIDE & SUPPORT

Last updated April 22, 2026

This guide explains how to use the DocReader application ("App") and where to obtain assistance. DocReader is a document reader that helps you open, read, and listen to supported files on your device, optionally browse and download public-domain works, and configure text-to-speech ("TTS") for read-aloud. Your library, reading positions, and most settings are stored locally on your device.

1. WHAT IS DOCREADER?

In Short: DocReader is a reader for PDF, EPUB, plain text, HTML, and certain other formats, with optional Project Gutenberg integration and on-device read-aloud.

DocReader is a mobile and desktop application that lets you:

• Open documents from your device ("Open file") and keep a local library with recent history.

• Read PDF and EPUB books with zoom, scroll speed, and default view-scale options.

• Use read-aloud with highlighting (where supported), including pause, resume, and stop controls.

• Choose among TTS engines: system TTS ("System TTS" / device voices) or optional on-device engines that use downloaded voice packs (Kokoro via Sherpa ONNX, or Supertonic), configured under Text to Speech and Settings.

• Browse and download free books from the Project Gutenberg ecosystem when you use the in-app catalog feature (network required).

• Adjust appearance (for example, light, dark, or system theme) and reading comfort (fonts where available, scroll speed, remember reading position).

The App does not require an account with 2A Software Developers. For how we handle information, see the Privacy Policy.

2. GETTING STARTED

In Short: Install the App from your distribution channel, open it to the library home screen, then open a file or explore Project Gutenberg.

• Install the App. Download and install DocReader from the Apple App Store, Google Play, Microsoft Store, or other official channel through which it is distributed.

• First launch. You will see the library home screen with your reading history (initially empty until you open documents). The App may prompt you about optional offline voice packs for higher-quality read-aloud; you can download them later from Settings or the Text to Speech screen.

• Open the navigation drawer. From the library screen, tap the menu icon in the app bar (three horizontal bars) to open the left drawer. The drawer header shows "Doc Reader" and your build version when available.

• Open your first document. In the drawer, tap "Open file" and select a supported file using the system file picker. Supported types include, among others, PDF, EPUB, common plain-text extensions (such as .txt and .md), HTML, and images (other types may be handed off to an external viewer where the platform allows).

3. LIBRARY, HISTORY, AND OPENING FILES

In Short: Recently opened items appear in the drawer under "Recent." Opening a file adds it to history and restores position if that option is enabled.

• Recent list. The navigation drawer lists recent documents with titles and relative times (for example, "Just now" or a date). Tap an entry to reopen it.

• Remember reading position. When enabled in Settings ("Remember Reading Position"), the App attempts to restore the last page or section when you reopen a document.

• Imports and storage. Depending on platform behavior, imported files may be copied into application storage so they remain available to the App. On iOS, application documents may appear under Files → On My iPhone (or iPad) when the system exposes that location.

4. PROJECT GUTENBERG

In Short: From the drawer, open Project Gutenberg to browse or download free books; an internet connection is required.

• Tap "Project Gutenberg" in the navigation drawer ("Browse and download free books").

• Browse or search the catalog as presented in the App. Downloads are retrieved from third-party hosts (for example, Project Gutenberg or mirrors) as returned by the catalog service.

• Downloaded books are added to your local library like other opened files. Availability and catalog data depend on third-party services outside our control.

5. READING DOCUMENTS (PDF AND EPUB)

In Short: Use on-screen controls to navigate pages or sections; adjust scale and scroll speed in Settings or Quick toggles.

• Navigation. Use familiar gestures and controls for scrolling, turning pages, and following links as provided by the viewer for each format.

• PDF view scale / EPUB view scale. Under Settings → General Settings, set the default scale mode for PDF and EPUB (for example, fit page or continuous options, as labeled in the App). These affect how new sessions lay out content.

• Document scroll speed. Configure scroll speed in Settings or from Quick toggles (see Section 7) to change how quickly auto-scroll or related behavior advances while reading.

• Scanned PDFs. Some PDFs lack a selectable text layer. Where supported, the App may use on-device optical character recognition so read-aloud and text selection can operate; results depend on scan quality and platform capabilities.

6. READ ALOUD AND TEXT-TO-SPEECH

In Short: Use the read-aloud control in the document viewer; configure engine, voice, and speed under Text to Speech or Settings.

• Starting read aloud. While viewing a document, use the read-aloud control in the app bar (tooltip "Read aloud"). You can pause or resume ("Pause read aloud" / "Resume read aloud") and stop ("Stop read aloud") as offered by the current screen.

• Headings to skip. Where available, you may configure headings or lines to skip during read-aloud (dialog titled "Headings to skip in read aloud"), one entry per line as prompted.

• TTS engines. Open the Text to Speech screen by tapping "TTS settings" in the left drawer while you are viewing a document (the document viewer's drawer—not the library home drawer). Voice-pack download cards and related options also appear under Settings. On the Text to Speech screen you can select among:

 – System TTS (system / device-integrated speech),

 – Sherpa ONNX with the Kokoro-style offline voice pack (higher-quality offline voices; larger download), or

 – Supertonic (separate offline pack; faster synthesis with somewhat lighter fidelity).

• Settings path (library). From the library drawer, tap "Settings" to configure TTS Engine (labels include System TTS, Kokoro TTS, and Supertonic TTS), speaker selection when an offline pack is installed, speech speed, and "Keep Screen Awake During TTS," together with voice-pack status cards and download actions.

• Voice pack downloads. On the Text to Speech screen (document drawer), use the download icons (for example, "Download Kokoro" and "Download Supertonic") to fetch and install packs over the internet. You can also start or monitor downloads from Settings. Installation progress and status are shown in dialogs and cards. Large downloads are best done on Wi-Fi.

• Mobile thermal note. On phones and tablets, long sessions with the highest-quality offline engine can cause noticeable warmth; if that occurs, consider switching to Supertonic in Settings for cooler operation.

• Keep screen awake during TTS. A Settings option can keep the screen awake during speech (where available) so playback is not interrupted by sleep.

7. SETTINGS AND QUICK TOGGLES

In Short: Full Settings are in the drawer; Quick toggles offer shortcuts for theme, fonts, TTS-related items, and reading parameters while you read.

• Opening Settings. From the library navigation drawer, tap "Settings" for the full Settings screen (back arrow returns to the previous screen).

• General Settings. Includes App Theme (System Theme, Light Theme, Dark Theme), Remember Reading Position, PDF View Scale, EPUB View Scale, Document Scroll Speed, and voice-pack status or download entry points as presented on your platform.

• Quick toggles. From the drawer, tap "Quick toggles" ("Theme & TTS shortcuts") for a compact panel. While reading a document, an end drawer ("QuickSettings") may offer similar shortcuts without leaving the viewer—use the control that opens the right-side panel from the document screen.

• Fonts. Where the App exposes font size or family controls (including in Quick toggles), adjustments apply to on-screen reading as implemented for the current format.

8. DESKTOP USE (WINDOWS, macOS, LINUX)

In Short: On supported desktops, window chrome and draggable title regions may behave like native desktop apps.

• Where enabled, the App uses desktop window conventions (for example, draggable title bar regions and window control buttons on Windows). macOS users may see extra top padding when not in full-screen mode to align with the traffic-light window controls.

9. TROUBLESHOOTING

In Short: Verify file type, permissions, network for downloads, and TTS engine selection.

• File will not open. Confirm the format is supported (PDF, EPUB, text, HTML, or image as implemented). Try opening the file in another app to verify the file is not corrupt.

• Read aloud silent or missing. Check device volume, Do Not Disturb, and Bluetooth routing. In Settings or Text to Speech, confirm an engine is selected; for offline engines, confirm the voice pack finished downloading and is not corrupted (re-download if needed).

• Project Gutenberg unavailable. Verify internet connectivity. Catalog and file hosts are third-party services and may be temporarily unavailable.

• Voice pack download fails. Check connection stability, available storage space, and retry. Cancel and restart the download from the dialog if the App offers that option.

• Crashes or unstable behavior. Restart the App; install the latest version from your Store; on desktop, ensure GPU and OS drivers are current. Clearing App data removes local library metadata and settings—use only if you understand that data loss may occur.

10. CONTACT AND SUPPORT

In Short: Email 2A Software Developers for help; include platform and version details; do not send confidential document contents unless we explicitly request them.

• Email: 2asoftwaredevelopers@gmail.com

• Use for: How-to questions, bug reports, feature requests, or licensing questions about DocReader.

• When writing: Include device type (for example, iPhone 15, Pixel 9, Windows 11 PC), operating system version, and App build/version if shown in the drawer. Describe steps to reproduce the issue and any error message text. Avoid attaching sensitive personal documents; summarize instead.

11. PRIVACY AND TERMS

In Short: Use of the App is also governed by the Privacy Policy and Terms and Conditions of Use.

• Privacy Policy: Describes what information is processed on-device, when the network is used (for example, Gutenberg and voice-pack downloads), and your rights. See PRIVACY_POLICY.html or the in-app or store link.

• Terms and Conditions of Use: Set forth the rules, disclaimers, and limitations applicable to your use of the App. See TERMS_AND_CONDITIONS.html or the in-app or store link.

Thank you for using DocReader. For the latest version of this guide, refer to the in-app help link or the distribution source where you obtained the App.

This guide describes the App in general terms; exact labels and menu layout may vary slightly by version or platform.