Calm clarity.
Reading should feel natural enough that attention stays on meaning.
Balanced, contemporary and familiar. Designed for long reading without looking remedial or unusual.
I l 1 i O 0 a o b d p q
Research designed. Evidence traceable. Dyslexia optimized.
Two ways to read. One evidence traceable system.
Super Dyslexia™ combines Harmonia and High Speed, two complementary font families by Karl Lillrud. Harmonia is calm and contemporary. High Speed increases local character distinction while preserving a professional visual language. Both are backed by the same 82 record evidence library and 24 decision proof ledger.
82research records
24traceable design decisions
2font families
40shipping font styles
Two families, one purpose
Choose the reading character that feels right to you.
The website itself uses your selected family. Harmonia stays calm and familiar. High Speed increases differentiation where shapes are easy to confuse. Neither is presented as universally better for every reader.
Fast recognition.
Clearer local silhouettes can reduce unnecessary visual ambiguity.
More assertive differentiation, still restrained enough for premium professional use.
I l 1 i O 0 a o b d p q
Why the project exists
A clearer path from text to meaning.
Good typography should disappear into understanding. The design language combines calm structure, open space and a sense of forward movement without turning accessibility into a visual stereotype.
An empathy experience
What if reading stopped feeling automatic?
Try to keep the meaning of the paragraph in your head while the words refuse to stay easy to decode. The aim is not to copy one person’s vision. It is to make effortless readers feel a little of the extra work that reading can demand.
Dyslexia is not simply moving letters.
This experience uses movement and letter transposition as a metaphor for reading friction. Dyslexia varies between people and is fundamentally a reading and spelling difficulty, not a single visual effect.
Ready when you are
15s
Can you read this for 15 seconds and still remember the meaning?
Reading usually becomes automatic. You stop noticing individual letters and your attention moves straight to meaning. Now imagine needing more effort to identify the words while still trying to remember the sentence, follow the line, and understand the idea before it disappears.
The friction is the point.
The animation deliberately interrupts automatic word recognition. It is an empathy analogy, not a diagnostic test and not a claim that dyslexic readers literally see this animation.
Reading can be slowerAccuracy and speed at word level are central parts of current dyslexia definitions.
Meaning competes with decodingWhen word reading takes more effort, comprehension can suffer as a secondary consequence.
Experiences differNo single animation can represent every dyslexic reader or every writing system.
Inspired by Victor Widell’s 2016 Dsxyliea experiment. Scientific framing follows the International Dyslexia Association 2025 definition and British Dyslexia Association guidance. Original experiment · IDA definition · Visual difficulties guidance
The design thesis
The evidence changed what we built.
Our strongest finding was not a magic letter shape. It was that there is no reliable universal advantage for existing specialist dyslexia fonts. So the project moved away from novelty and toward evidence constrained typography.
No disability aesthetic
A 2026 meta analysis found no reliable overall reading advantage for specialist dyslexia fonts. Super Dyslexia therefore avoids heavy bottoms, arbitrary rotations and irregular baselines.
Azzarello et al., 2026Familiar first
Orthographic familiarity matters. We preserve normal word forms, then improve local distinctions where characters can collide.
Georgiou et al., 2021Reading is a scenario
The newest typography synthesis concludes there is no single most legible typeface for every context. That led directly to Display and Reading optical cuts.
Beier & Thiessen, 2026How a study becomes a glyph
Research > insight > design change > validation boundary.
Every major decision follows the same chain. We separate dyslexia specific evidence from general legibility evidence, and we mark hypotheses that still require direct reader testing.
1ResearchPeer reviewed study, review or meta analysis
2InsightWhat the finding actually supports, without overreach
3Font changeThe exact geometry, spacing or feature affected
4BoundaryWhat remains unproven until human trials
Five examples
What the research changed in the actual font.
c e a s
A
Open apertures are protected
Controlled recognition experiments found more identification errors when apertures were closed. The Reading cut protects the internal white space of c, e, r, s, f and t, including at heavier weights.
Closed letter counters impair recognitionReadingReading
B
Reading and Display have different optical jobs
Wider forms can improve some recognition tasks, but wider is not universally faster. Both families therefore use a dedicated Reading cut for sustained text and a tighter Display cut for larger typography, without extreme expansion.
Oderkerk & Beierone word another
B
Word boundaries get more room
Research supports treating word boundaries as a separate variable from letter spacing. The Reading cuts keep character spacing restrained while preserving clearly visible word boundaries, and the Type Studio lets readers test additional spacing directly.
Price Mohr & Price, 2024I l 1 i
B
Confusable uprights are changed locally
Distinctive forms can help letter identification without proving passage reading gains. Harmonia keeps calm familiar forms, while High Speed increases local silhouette differences for confusable characters without redesigning the entire alphabet.
Joseph & Powell, 2022AaAaAa
A
Body text avoids weight extremes
Recognition drops with very thin and extremely bold strokes. Regular is the primary reading weight, with Medium recommended when the visual size becomes smaller.
Beier & Oderkerk, 2019Public Proof Ledger
24 design decisions. Every one inspectable.
Filter by evidence grade or evidence type. Each card shows the research finding, the decision it caused, and exactly how it appears in the font.
Live Type Studio
Test the real fonts, not simulated switches.
Change cut, weight, size and spacing. The active website family is Harmonia. The comparison below keeps both families visible under identical settings.
Reading should feel calm, clear and confident enough that attention stays on meaning.
Harmonia
Reading should feel calm, clear and confident enough that attention stays on meaning.
High Speed
Reading should feel calm, clear and confident enough that attention stays on meaning.
Language Lab
One design system, tested across the published character coverage.
The current original release covers Latin and extended Latin, Vietnamese, modern Greek, modern Cyrillic, combining marks, punctuation, currencies, arrows, mathematics and related symbols. Scripts that require their own native construction will be released as dedicated modules rather than approximated with borrowed shapes.
LatinExtended LatinVietnameseGreekCyrillicCombining marksCurrencyMath and symbols
Clear words make space for bigger ideas.
Evidence library
82 documented research records behind the current design.
The library includes dyslexia specific research and general typography evidence, clearly separated so a general legibility result is never silently presented as a dyslexia result.
For a fully crawlable, citation friendly version of the evidence, use the research library and the methodology page.
What we can say today
Bold claims need evidence behind them.
Super Dyslexia is research designed, evidence traceable and explicitly optimized around dyslexia and legibility findings. It is not yet scientifically proven to outperform every comparator in human passage reading.
UnlockedResearch designed
UnlockedEvidence traceable
UnlockedDyslexia optimized
NextComparative human validation
LockedScientifically proven best
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