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Kindle fonts for dyslexia - Bookerly, OpenDyslexic and beyond
Most Kindle owners with dyslexia stay on the default font for years before realising the menu has six or seven alternatives buried in it - including OpenDyslexic, the only typeface in the list specifically designed for dyslexic readers. The question is which one actually helps, and the honest answer is: the font matters, but it matters less than three settings sitting in the same panel. This is the practical guide, with the settings in the order to change them.
The short answer
If you have never changed your Kindle font, try OpenDyslexic for one full book. It is the only font in the Kindle menu engineered around the failure modes of dyslexic reading - mirrored letters, ascender/descender confusion, crowding. Many adult readers find it helps; a sizeable minority find it ugly or distracting. You will know within an hour.
If OpenDyslexic does not click, switch to Bookerly at 16-18 pt, line spacing on the largest setting, and Bold Level 2. Bookerly is Amazon's house serif - generous x-height, open counters, careful spacing - and at the right size and weight it outperforms every other built-in Kindle font for sustained reading. The font change is small; the layout change is large.
What fonts a Kindle actually offers
Recent Kindle models (Paperwhite, Oasis, Scribe, the basic 2024 Kindle, and the colour Kindle Colorsoft) all ship with the same font menu, accessed via the "Aa" button while reading. The list, as of 2026, is: Bookerly, Amazon Ember, Amazon Ember Bold, Caecilia, Caecilia Condensed, Helvetica, Palatino, Baskerville, Futura, and OpenDyslexic. The Kindle app on iOS and Android shows the same set; older Kindle Voyages and earlier devices have a slightly shorter list that excludes OpenDyslexic in some firmware versions - check Settings, Device Options, About to see your firmware.
Only one of those fonts was designed with dyslexia in mind. The others were chosen because they were already licensed, broadly readable, and visually distinct from each other. That does not mean OpenDyslexic is automatically the right pick - it just means you should not assume the rest of the menu was curated with dyslexic readers in mind. It was not.
Each Kindle font, in plain terms
Bookerly - Amazon's default serif
Bookerly was commissioned by Amazon from Dalton Maag in 2015 specifically for long-form e-ink reading. It is a serif designed to look comfortable at small sizes on low-resolution screens. It has a generous x-height (the lower-case letters are tall relative to the capitals), open counters (the holes inside letters like a, e, o), and slightly wider letterspacing than most book serifs. In practice it is the most "rest your eyes here" font on the Kindle, and Amazon made it the default for a reason.
For dyslexic readers without strong visual stress, Bookerly is often the best non-OpenDyslexic choice. The serifs are short and even, which means they help the eye track the baseline without becoming the bristly, attention-grabbing serifs of a Times Roman. We discuss why this matters - the case for serifs in dyslexia - in our companion piece on serif vs sans-serif for dyslexic readers.
OpenDyslexic - the purpose-built option
OpenDyslexic is the only Kindle font designed around dyslexia. It is open-source, released in 2011 by Abelardo Gonzalez, and built on a simple principle: weight the bottom of every letter so the eye has a clear orientation cue. Mirrored letter pairs (b/d, p/q, m/w, n/u) become harder to flip mentally because their heavy "feet" point in fixed directions. Ascenders and descenders are exaggerated, and letter spacing is wider than usual.
The evidence for OpenDyslexic is mixed. Vendor-led studies and reader testimonials are positive; independent academic studies have generally found no large reading-speed gain for the average dyslexic reader. But "no large gain on average" is not the same as "does not help anyone." A meaningful minority of dyslexic readers report it transforms long-form reading. The only reliable test is to use it for a full book - not a paragraph. We go deeper on this in OpenDyslexic vs Lexend.
Amazon Ember and Ember Bold - the workhorses
Ember is Amazon's house sans-serif - calm, neutral, designed for UI and book copy. Ember Bold is the same face at a heavier weight. For readers who prefer sans-serif to serif and find OpenDyslexic too unusual, Ember is the sensible pick. It is not as tuned for dyslexic reading as Atkinson Hyperlegible or Lexend would be (neither is on Kindle), but it is well-drawn, the x-height is generous, and the lower-case g uses a simple single-storey design rather than the complicated two-storey shape that some dyslexic readers find confusing.
Ember Bold is worth a moment of its own. For readers who find that a bold weight makes letters more distinct - many do - switching to Ember Bold is a faster way to get there than Ember plus the Bold Level slider, because the typeface was drawn at that weight rather than synthesised. We dig into when boldness helps in font weight and dyslexia - does bold actually help?
The rest of the menu
Caecilia, Caecilia Condensed, Helvetica, Palatino, Baskerville and Futura are the older guard. Caecilia (a slab serif) was the original Kindle default before Bookerly and is still beloved by some readers for its strong baseline. Palatino and Baskerville are classic book serifs - elegant but with finer strokes that can flicker on lower-resolution e-ink screens. Helvetica is workmanlike but its lower-case shapes are less distinctive than Ember's. Futura is a geometric sans with a small x-height; almost no one should be reading long-form on it.
If you have already tried Bookerly and OpenDyslexic and want a third option, Caecilia is the most defensible pick from the older fonts. The slab serifs give the baseline cue that helps tracking, and the letterforms are wide enough to stay distinct.
The settings that matter more than the font
Here is the part most articles skip. On a Kindle, the layout settings have a larger effect on reading comfort than the typeface. Pick a reasonable font and then change these, in this order:
1. Font size
The Kindle font-size slider has nine to fourteen positions depending on the model. Adult dyslexic readers tend to be most comfortable at position 5 to 7 on most Kindle models, which corresponds roughly to 14-18 pt. The page will hold fewer words; this is not a defect, it is the point. Smaller font sizes increase letter crowding and force longer fixations. For the research-led reasoning, see our best font size for dyslexic adults piece.
2. Line spacing
Kindle exposes three settings - small, medium, large. Always choose large. The default is usually medium, which is too tight for most dyslexic readers. The single largest comfort change you can make in the Aa menu, after font size, is moving line spacing to the largest option. It costs you a few lines per page; in exchange, your eye stops snagging on the line below the one it is reading. See line and letter spacing for dyslexia for why this is so reliable a fix.
3. Margins
Three settings: narrow, medium, wide. The instinct is to choose narrow to "get more on the page." Do the opposite. Wide margins shorten the line, which means fewer characters per line, which means fewer return-sweep errors at the end of each line. Sixty to seventy characters per line is the comfortable range for most adult readers, dyslexic or not; on most Kindles, the wide margin setting at font size 6 gets you close.
4. Bold level
The "Aa" panel has a Bold Level slider, 0 to 5. This synthesises extra weight on the chosen font. Bold Level 1 or 2 is usually the sweet spot - the strokes become more distinct without becoming heavy. Push it higher and the letters start to look smeared because they are being thickened by software rather than redrawn. If you are reading at Bold Level 4 or 5 every day, switch to Ember Bold instead and reset the slider to zero; you will get a cleaner result.
5. Alignment
The newer Kindles default to fully justified text. Switch to left-aligned (sometimes labelled "left" or "ragged right"). Full justification causes uneven word spacing - the gaps between words vary line to line to make the right margin straight - and dyslexic readers are especially sensitive to this. Word spacing is one of the cues the brain uses to detect word boundaries; when it is inconsistent, reading slows down. We cover this in detail in line spacing and letter spacing for dyslexia.
6. Background
On the Colorsoft and Scribe, you can tint the page slightly off-white. A faint cream tint reduces glare and can lower visual stress for readers with Irlen-like sensitivity. On a standard e-ink Kindle the screen is already off-white and matte; you do not need to do anything. See background colours for dyslexia for the long version.
Bookerly vs OpenDyslexic, side by side
| Bookerly | OpenDyslexic | |
|---|---|---|
| Design intent | Generic comfort on e-ink | Dyslexia-specific letter disambiguation |
| Letter style | Serif, medium x-height | Sans-serif with weighted bottoms |
| Handles b/d/p/q confusion | Indirectly, via shape distinction | Directly, via gravity-anchored letters |
| Looks "normal" | Yes - close to a book | No - visibly unusual |
| Best at small sizes | Yes - drawn for low DPI | Acceptable but designed for larger sizes |
| Evidence base | Industry-standard book serif; large but indirect track record | Mixed - strong reader testimonials, modest academic effect sizes |
| Recommended starting size | 14-16 pt | 16-20 pt |
| Best for | Sustained novel reading; readers who want a "normal-looking" page | Letter-level confusion (b/d, p/q); newer readers; children |
| Worst for | Severe letter-mirroring confusion that needs explicit cues | Readers who find the look distracting or who read very fast already |
What about non-Kindle e-readers?
Kobo, PocketBook and Boox all support sideloading custom fonts to a degree Kindle does not. If you own a Kobo, you can drop OpenDyslexic, Lexend, Atkinson Hyperlegible and Comic Neue into the device's font folder and pick them in the menu. PocketBook is the most flexible of the lot - it accepts any TTF or OTF. Boox tablets, which run Android, can install full font packs the way a phone does.
This is the main reason a few dyslexic readers move off Kindle. If you have spent six months hitting the limits of the Kindle font menu - especially if you would like to try Lexend or Atkinson Hyperlegible, neither of which Amazon offers - a Kobo Clara or PocketBook Era is worth a look. The reading experience is otherwise very similar, and the broader font choice can genuinely help.
How this compares to web reading
An e-reader gives you a tightly controlled reading environment with about ten font choices. The web, by contrast, defaults to whatever the page author chose - often a thin, condensed sans-serif at low contrast that the dyslexic reader cannot do much about without help. The same OpenDyslexic, Lexend or Atkinson Hyperlegible that you can sideload onto a Kobo is also what a Chrome font-override extension applies to every site you visit.
If you have already worked out which font helps you on Kindle, the obvious next step is to apply the same font to the rest of your reading life - email, news, articles, work documents in the browser. That is what LexiFont is built for: a Chrome extension that applies your chosen dyslexia font to every site, automatically. The free tier ships with OpenDyslexic. LexiFont Pro adds Lexend, Atkinson Hyperlegible and Comic Neue as a one-time payment.
The practical recipe
If you want a one-shot recipe to try this evening, it is this. Open a book on your Kindle, tap Aa, and set:
- Font: OpenDyslexic first; if that does not click after a chapter, switch to Bookerly.
- Size: 6 (or roughly 16 pt - one or two steps up from the default).
- Line spacing: Large.
- Margins: Wide.
- Bold level: 1 or 2 for Bookerly, 0 for OpenDyslexic.
- Alignment: Left.
- Background: Default (off-white). Slight cream tint if Colorsoft and you find pure white tiring.
Read for thirty minutes. Not five. The first few minutes after a font change feel weird because your eye is calibrating; the test only becomes meaningful around the twenty-minute mark, when fatigue or comfort starts to surface. If the font helps, the second half-hour will feel easier than the first. If it does not, switch the font and try again - the rest of the settings should stay where they are.
The order of operations: change the layout settings first (size, spacing, margins, alignment), then test fonts. If you change everything at once, you will not know which change did the work, and you will be back here in a month asking the same question.
For children with dyslexia reading on a Kindle Kids
The Kindle Kids editions ship with parental controls and a slightly different font default - usually Bookerly at size 5. For a child who is in active reading instruction, OpenDyslexic at size 7 with large line spacing and wide margins is the configuration most reading specialists set up. Two caveats: first, do not force a font on a child who finds it ugly - the goal is for them to read, not to fight the page. Second, swap fonts every few weeks at first; a child's reading needs change quickly as their phonics improve, and what helps at six can be unhelpful at nine.