Design Philosophy

How to Adjust Typography and Reading Fonts in GemReader

November 12, 2026 · 4 min read

Make reading effortless on your eyes. Discover how to customize font families, fine-tune font sizing with smooth sliders, and explore specialized accessibility typefaces like OpenDyslexic and Lexend.

Why Typography Matters for Deep Reading

Every reader's eyes and reading environments are different. A small, delicate serif font that looks graceful on a printed paper page can cause fatigue when read on a compact smartphone screen under dim light. Meanwhile, readers with dyslexia or visual tracking sensitivities often find specialized letterforms dramatically easier to read.

GemReader approaches digital typography with the devotion of a traditional book designer. Rather than locking you into rigid device defaults, you can choose between publisher-crafted layouts, time-honored literary serifs, clean sans-serifs, and dyslexia-friendly letterforms, adjusting text size until every page feels inviting.

What You'll Need

Before fine-tuning your typography, ensure you have:

• **Platforms**: GemReader installed on Android or iOS. • **Supported Formats**: Any reflowable ebook (such as EPUB, MOBI, AZW3, FB2, or plain text). • **Prerequisites**: A book open in the reader view.

Step-by-Step Instructions

1. While reading any reflowable book, tap the center of the screen to reveal the top and bottom navigation bars. 2. Tap the **Aa** button in the top toolbar to open the **Text Settings** sheet. 3. **Adjust Text Size**: Locate the **Text Size** slider near the top of the sheet and drag the slider handle left or right to set the scale to your exact reading comfort. 4. **Choose Your Font**: Under the **Font** section, select from the curated family of typefaces: - **Book**: Honors the publisher's original stylesheet and embedded fonts. - **Serif**: A classic, balanced serif typeface suited for traditional prose. - **Sans**: A clean, contemporary sans-serif with high legibility on high-resolution screens. - **Baskerville**: A time-tested literary serif with refined contrast between thick and thin strokes. - **Literata**: A modern typeface specifically commissioned for digital long-form book reading. - **Lexend**: Designed to reduce visual crowding and increase reading speed. - **OpenDyslexic**: Features weighted bottoms and distinctive shapes to help prevent letter flipping and confusion. 5. Tap anywhere outside the sheet to dismiss the settings and return to reading.

Helpful Tips & Common Questions (Librarian's Advice)

• **Curated Built-In Fonts**: The built-in font family (Serif, Sans, Baskerville, Literata, Lexend, and OpenDyslexic) is carefully calibrated for digital displays, fully embedded, and ready to use without requiring separate downloads. • **Fixed Layouts & Comics**: Note that fixed-layout documents (like CBZ comic archives and fixed PDF pages) preserve their pre-rendered graphics; typography and font-family controls apply to reflowable books. • **Typography Persistence**: Your font family and text size preferences are remembered automatically across reading sessions, so your comfortable setup is waiting every time you open a book.