Google Play Books and dyslexia — fonts, settings, and Chrome workarounds
Google Play Books is one of the most widely used ebook platforms in the world, and a large share of its readers access it through a browser on a laptop or desktop — not just through the mobile app. For dyslexic readers, this raises a specific and frustrating question: can you actually control the fonts and spacing, or are you stuck with whatever Google decided?
The short answer is that the web reader offers some controls but not the ones dyslexic readers are most likely to want. This article walks through every setting available, explains why the mobile app handles this differently, and covers what Chrome-level tools can and cannot do when the built-in options run out.
What the Google Play Books web reader actually offers
When you open a book at play.google.com/books and tap the "Aa" settings button, you get five categories of controls: font, text size, line spacing, themes, and publisher defaults.
The font picker offers a small fixed list. As of mid-2026 it typically includes a Serif option (a Times-style face), a Sans option (something close to Roboto), a default that follows the publisher's embedded font, and occasionally a few extras depending on your device region and Google account. What it does not include is OpenDyslexic, Lexend, Atkinson Hyperlegible, Comic Neue, or any of the purpose-built dyslexia-oriented typefaces that have accumulated solid real-world evidence behind them.
Text size is adjustable across a useful range — small enough for readers with excellent vision, large enough to be comfortable at arm's length. This is genuinely helpful and covers the same ground as browser zoom, but in a more controlled way that doesn't break the page layout.
Line spacing has three or four preset levels (compact, standard, relaxed, and sometimes a fourth wider option). Wider line spacing is one of the most reliably beneficial adjustments for dyslexic readers — it reduces the vertical crowding that causes eye-tracking confusion and makes it easier to stay on a single line. The relaxed setting is the right default for most dyslexic readers. The research behind line spacing and letter spacing for dyslexia consistently points in this direction.
Themes give you white, sepia (a warm cream tone), night (dark background with white text), and occasionally a couple of intermediate options. Sepia is worth trying if you find pure white backgrounds harsh — it reduces the contrast slightly in a way that helps some readers with visual stress. The research on background colours for dyslexia suggests cream and off-white tones benefit a measurable subset of dyslexic readers, so sepia is not just an aesthetic choice.
Publisher defaults is a toggle that, when on, surrenders all your settings to whatever the publisher embedded in the EPUB file. Turn it off. Publishers rarely think about dyslexia-friendly typography, and their embedded choices are frequently tight serif fonts at small sizes with compressed line spacing. The toggle defaults to on, which means many readers never see the controls at all.
The key limitation: why the web reader is constrained
The Google Play Books web reader renders text in a way that makes it harder to inject custom fonts than a normal webpage. Unlike a blog post or a news article — where the text is plain HTML that a browser extension can easily restyle — the web reader uses a layered rendering system designed to protect publisher content. The text is not accessible to the browser's DOM in the straightforward way that a CSS override needs.
This matters for Chrome font-override extensions, including LexiFont. A font override extension works by injecting a CSS rule that changes the font-family property on text elements. On most websites, this works reliably and affects all readable text. On the Google Play Books web reader, the rendering layer insulates the text from this approach, which means a standard CSS injection will not change what you see on the page. This is not a bug in the extension — it is a deliberate characteristic of how the reader is built.
The honest takeaway: if you read ebooks primarily in Google Play Books on the web, the built-in font controls are what you have. LexiFont and similar extensions will help you with every other site you visit, but not with the Play Books reading canvas itself.
A practical note on the web reader vs everything else: LexiFont applies your chosen font to every normal website — news articles, Wikipedia, email, work tools, blog posts. If you read Play Books on the web, those books use the built-in settings; everything else you read in Chrome gets your preferred dyslexia font. The two systems are parallel rather than conflicting.
What the mobile app does better
The Google Play Books app on Android and iOS has substantially better typography controls than the web reader. On Android in particular, Google has progressively expanded the font options and the list now includes at least one sans-serif that behaves reasonably for dyslexic readers (though not, as of 2026, any of the purpose-built dyslexia fonts).
More usefully, the app respects the system-level accessibility fonts on both platforms. On Android, if you have installed OpenDyslexic as a system font (which is possible on many Android builds), some apps — though not all — will inherit it. On iOS, the system font override is more restricted, but Apple's accessibility settings allow text size, bold weight, and contrast adjustments that apply across apps including Play Books.
If you have the option to read Play Books on an Android tablet or iPad rather than a laptop, you will generally have more control over the reading experience. The iOS accessibility settings for dyslexia and the Android accessibility settings guides cover this in detail.
An alternative: download the EPUB and read it elsewhere
Google Play Books allows you to download purchased books as EPUB files, provided the book is not DRM-locked (many are, but some are not). If you have an unprotected EPUB, you can open it in a more accessible reading environment.
On desktop, a lightweight option is to open the EPUB in a browser extension like EPUBReader, which renders the book as a normal HTML document — meaning LexiFont, browser zoom, and all your standard CSS overrides apply fully. You can set it to Lexend or Atkinson Hyperlegible and read with exactly the typography you prefer.
A step up from that is dedicated EPUB reading software. Calibre (free, cross-platform) can display EPUB files with a configurable font. You point it to your chosen font file, set the size and line height, and read without any of the rendering constraints of a web-based reader. For readers who have worked out which typeface helps them most, Calibre is the most flexible option on desktop. The downside is that it is a more complex tool, and the interface is not especially friendly for first-time users.
For DRM-protected books, the download option is not available. Most bestsellers and new releases are DRM-locked. In that case, the web reader's built-in controls — or the mobile app — are your options.
Making the most of what's built in
Given the constraints, here is the practical setup that works best for dyslexic readers using the Google Play Books web reader.
First, turn off publisher defaults immediately. Go to the Aa menu and flip that toggle off. This is the single highest-leverage change — it gives you control over settings that were previously overridden.
Second, choose Sans over Serif for the font. The built-in sans-serif is not a dyslexia-specific typeface, but sans-serifs consistently outperform serifs for readers who struggle with letter discrimination. A clean sans-serif at a readable size is better than a compact serif at the publisher's default. The research on serif vs sans-serif for dyslexic readers explains why this matters.
Third, push the text size up one or two steps above where you might instinctively set it. Dyslexic readers typically benefit from slightly larger text — not because they have poor visual acuity, but because larger letterforms make individual character features (ascenders, descenders, counters) easier to discriminate. The research on font size and dyslexia suggests that for adults reading sustained prose, something in the 18-22px range is usually better than the 14-16px defaults that publishers tend to embed.
Fourth, set line spacing to the widest available preset. This reduces the risk of losing your place when your eye returns from the end of one line to the start of the next — a common complaint among dyslexic readers that is directly linked to tight vertical spacing.
Fifth, try the sepia theme if plain white feels uncomfortable. Some readers find no difference; others find sepia meaningfully reduces the eye strain and contrast sensitivity issues that compound reading difficulty over long sessions.
| Setting | Recommended for dyslexic readers | Why |
|---|---|---|
| Publisher defaults | Off | Gives you control over all other settings |
| Font | Sans-serif option | Cleaner letterforms than serif; easier character discrimination |
| Text size | One or two steps above your initial instinct | Larger characters make individual letter features more distinct |
| Line spacing | Widest available preset | Reduces eye-tracking errors between lines |
| Theme | Sepia (or white if sepia feels dim) | Slightly reduced contrast helps some readers with visual stress |
Browser-level settings that do work alongside Play Books
While CSS font overrides don't reach inside the Play Books reading canvas, some browser-level adjustments do apply to the surrounding interface — the library view, the search results, the book description pages — and to everything else you read in Chrome.
Chrome's built-in font settings (Settings > Appearance > Customise fonts) let you set a default sans-serif font for the browser. This applies to any webpage that doesn't specify its own font, and to some interfaces that fall outside the Play Books reader canvas. If you set this to a dyslexia-friendly font that you have installed locally, you will see it in more places than you might expect.
LexiFont applies your chosen font across all the other sites you read in Chrome — news articles, blog posts, Wikipedia, your email, work tools. If you have worked out which font helps you most in Play Books' limited selection, a natural next step is extending that same reading experience to all the text-heavy reading you do elsewhere. LexiFont Pro adds Lexend, Atkinson Hyperlegible, and Comic Neue to OpenDyslexic — the same fonts that disability-services teams at universities and workplaces routinely recommend — as a one-time purchase.
Chrome's text scaling (Settings > Appearance > Font size, or Ctrl+Plus) does apply globally including to the Play Books interface outside the reading canvas. If you need larger interface text — the library titles, the menus, the settings panel — increasing Chrome's default font size helps there.
How Google Play Books compares to other ebook readers on the web
The Google Play Books web reader's font limitations are not unique. The Kindle Cloud Reader (Amazon's web-based reader) has a similar architecture and a similarly constrained font menu. Neither platform exposes the reading canvas to standard browser CSS overrides in the way that normal web pages do.
Where platforms do better: reader mode and reading extension apps like Readwise Reader and Matter handle EPUB and article content as normal HTML, which means full font control. If your reading is a mix of ebooks and articles, a read-later app that converts everything to a consistent, accessible format is worth considering. The guide to read-later apps for dyslexia covers the main options.
For dedicated hardware, Kindle devices and Kobo e-readers both allow sideloading of custom fonts including OpenDyslexic, which the web readers do not. If long-form reading is a significant part of your day, a dedicated e-ink device with OpenDyslexic or Lexend loaded gives you a level of control that no web-based reader currently matches.
A note on audiobooks through Play Books
Google Play Books also sells audiobooks and, for some titles, offers a read-along mode that highlights text in sync with a narrator. For dyslexic readers who find decoding the barrier rather than comprehension, read-along mode removes that barrier entirely. The text is still rendered by the same constrained system, so you cannot change its font, but the synchronised audio means decoding individual words matters less — the sound carries the meaning while the highlighted text provides a visual anchor.
This is not a workaround for the font limitation; it is a genuinely different mode of reading that suits some dyslexic readers very well. If you have not tried read-along mode on Play Books, it is worth testing on a title you know well. Some readers find the combination of audio and highlighted text dramatically easier than silent reading; others prefer the control of reading at their own pace. The comparison of text-to-speech vs font changes for dyslexia goes into the cognitive mechanisms behind both approaches.
Practical summary
Google Play Books on the web gives you enough to work with — line spacing, text size, theme, and a basic sans-serif option — but it does not give you the purpose-built dyslexia fonts that make the largest difference for many readers. The mobile app is marginally better, and on Android it can inherit system-level font overrides in some configurations. For DRM-free books, reading through an EPUB reader or Calibre restores full font control. For everything else you read in Chrome outside of Play Books, LexiFont applies your preferred font site-wide, which covers the majority of most people's daily reading even if it cannot reach inside the ebook canvas.
The constraint is real and worth knowing about before you commit to Play Books as your primary reading platform. For readers who care deeply about typography — and most dyslexic readers have good reason to — a dedicated e-reader or a read-later app that treats content as normal HTML will give you substantially more control.
Further reading
- Kindle fonts for dyslexia — OpenDyslexic, Bookerly, and the full picture
- Kobo vs Kindle for dyslexia — which e-reader handles fonts better?
- Reader mode vs reading extensions — which is better for dyslexia?
- Read-later apps and dyslexia — Pocket, Instapaper, Readwise Reader compared
- Text-to-speech vs font changes for dyslexia — which approach helps more?