Features & Study

How to Add Notes and Marginalia to Your Highlights

November 12, 2026 · 4 min read

Carry on an active conversation with the author. Discover how to attach personal reflections, study questions, and formatted Markdown notes to your book highlights in GemReader.

Why Keep Marginalia and Notes?

A highlight marks what the author wrote, but a note captures what *you* thought the moment you read it. Recording your immediate questions, counterarguments, or cross-references to other books transforms reading into an enduring intellectual dialogue.

In GemReader, every highlight can carry its own rich note. Your commentary is anchored directly to the exact passage, indicated by a gentle margin indicator, and automatically indexed into your searchable **Gems Library**.

What You'll Need

To attach notes to your reading, you need:

• **Platforms**: GemReader on Android or iOS. • **Supported Formats**: Reflowable ebooks (EPUB, MOBI, AZW3, FB2, TXT) or PDF documents. • **Prerequisites**: Any book open in the reader view.

Step-by-Step Instructions

1. In your book, press and drag across the passage you wish to annotate, or tap directly on an existing highlight on the page. 2. In the **Floating Pop-up Annotations Menu** that appears above the text, tap the **Note** button (marked with a speech bubble icon). 3. The note editor sheet will slide up from the bottom of your screen, displaying the quoted excerpt above the text field. 4. Type your personal reflection, summary, or study note. 5. You can format your thoughts using lightweight Markdown syntax (such as `**bold**`, `*italics*`, bullet lists `- item`, or hashtags `#topic`). 6. Notice that you do not need to hunt for a save button—GemReader quietly autosaves your note continuously as you type. 7. When finished, simply swipe down on the sheet or tap outside to close it. A subtle margin indicator will appear alongside your passage, showing that a note is attached.

Helpful Tips & Common Questions (Librarian's Advice)

• **Editing or Revisiting**: To re-read or edit your note later, simply tap the highlighted passage or its margin badge to open the editor instantly. • **Color Swatches in the Editor**: You can adjust the highlight color swatch directly from inside the note editor toolbar without having to re-select the text. • **Markdown Preview**: Tap the Markdown icon in the note toolbar to toggle between raw text entry and a clean formatted preview of your styled notes and lists. • **Organizing with Tags**: Type `#exam`, `#thesis`, or `#quote` anywhere in your note. GemReader recognizes your tags and lets you filter by topic across your entire library in the **Gems Library** tab.