Blog · Typography
Italics and dyslexia - does slanted text slow you down?
If you have dyslexia and a paragraph in italics makes you quietly tense up, you are not imagining it. Slanted type is one of the few formatting choices that manages to undo several dyslexia-friendly features at once - it tilts the letters, thins the strokes, crowds the words and, in many fonts, swaps in letter shapes you have never had to decode before. The good news is that italics are almost always used in small doses, and where a page overdoes it, you can flatten the whole thing back to upright text in a couple of clicks. Here is what is actually going on, and what to do about it.
The short answer
Italics are measurably harder to read for most people, and the penalty tends to be larger for dyslexic readers. The slant, the lighter strokes and the tighter spacing all work against the cues a dyslexic reader leans on most. A word or two in italics is harmless; a whole paragraph, a long quotation or an entire article set in italics is where the cost becomes real.
You do not have to put up with it. Reader mode and font-override tools strip the slant and re-render the page in an upright, dyslexia-friendly typeface - which is usually the fastest fix.
What italics actually do to letters
There are two different things the world calls "italic," and the distinction matters. A true italic is a separate, specially drawn version of the typeface - the letters are not just tilted, they are redesigned, often with cursive-style strokes and different shapes. A lowercase a that has two storeys when upright frequently collapses into a single-storey, handwritten a in true italic. An oblique, by contrast, is just the upright font mechanically slanted by the software. Most web pages, when they cannot find a real italic, fake one by skewing the regular font on the fly - and that synthetic slant is usually the worst of the lot.
Read those two lines back to back and notice what changes. The vertical strokes are no longer vertical, so the eye loses the clean rhythm it uses to step from letter to letter. The letters lean into one another, which shrinks the white space between them. And in many typefaces the italic a, f and g change shape entirely. None of this is dramatic on a single line. Over a few hundred words it accumulates.
Why the slant works against dyslexic readers
There are four quiet mechanisms, and they stack.
The slant disrupts the vertical baseline cue. Upright letters give your eye a forest of vertical strokes that act like a grid, helping it track along the line and not slip up or down. This is the same place-keeping system that breaks down for readers who lose their place while reading. Tilt every stroke ten or twelve degrees and the grid is gone, so the eye has to work harder to stay on the line.
Spacing tightens. Slanted letters nest into each other - the top of one leans over the bottom of the next - which reduces the effective gap between characters and between words. Tight spacing is one of the most reliable ways to make text harder for dyslexic readers, which is exactly why letter and word spacing tweaks help so much. Italics push in the opposite direction.
Stroke contrast and weight drop. True italics are often drawn a touch lighter than their upright counterpart, and a skewed synthetic italic anti-aliases poorly on screen, leaving thin, slightly fuzzy edges. Either way the letters lose crispness, and crisp edges are part of what makes a shape quick to recognise. This is the flip side of the point in our piece on font weight and dyslexia: just as too-heavy text closes up letter counters, too-light italic text washes the edges out.
New letter shapes raise the decoding cost. If the italic a becomes a single-storey handwritten form, a reader who already finds letter identification effortful now has a second shape to learn for the same letter. For readers prone to b, d, p and q confusion, the redrawn italic forms remove some of the small asymmetries that helped tell those letters apart when upright.
What the research suggests
Studies aimed specifically at italics and dyslexia are thin, but the broader legibility literature is fairly consistent. Across general-reader studies, italic text is read more slowly than upright text - the effect is small per line but reliable, and it grows with the length of the italic passage. Comprehension itself usually holds up; what suffers is speed and comfort, which is precisely the dimension dyslexic readers have least to spare.
Accessibility guidance has converged on the same advice from the other direction. The British Dyslexia Association's long-standing style guidance recommends avoiding italics for emphasis and using bold instead, because bold preserves letter shape and spacing while italics distort both. Web accessibility writers give similar advice for long passages. None of this says italics are forbidden - it says they are a poor default for anything longer than a phrase.
It is worth being honest about the limits of the evidence. Most of these findings come from mixed-reader studies rather than large dyslexia-specific trials, and individuals vary. Some readers genuinely do not notice italics much. But if you find italic passages tiring, the research gives you no reason to think you are doing it wrong - the format is working against you.
Where italics still earn their place
The goal is not to abolish italics. Used in their proper, narrow role they carry real meaning that would otherwise be lost.
One or two words at a time
A single italicised word - a book title, a foreign phrase, a word under stress - is short enough that the slant never accumulates into fatigue. This is italics doing the job they are good at: marking a brief change of register without redrawing the whole paragraph. The same logic applies to small runs of capitals: a little goes a long way, a lot becomes a wall.
Signalling, not styling
Italics that mean something - the name of a ship, a Latin species name, the title of a film - are worth keeping because the reader needs the signal. Italics used purely for decorative flourish, like an entire pull-quote or a stylised intro paragraph, give you all of the reading cost and none of the meaning.
When bold is the better tool
If the only job is emphasis, bold almost always serves a dyslexic reader better than italic, because it keeps the letters upright and the spacing intact while still standing out. If you control the text - your own notes, documents or a site you run - reach for bold instead of italic for stressed words, and reserve italics for the cases where convention genuinely requires them.
Reducing italics on pages you do not control
Most italic-heavy reading is on sites you cannot edit: a long blockquote on a news site, an academic page that italicises every term, a blog with a fashionably slanted intro. You have a few ways to take the slant back out.
| Approach | What it does | Best for |
|---|---|---|
| Reader mode | Re-renders the article in clean upright body text, dropping most of the page's own styling. | Long articles where the whole layout is fighting you. |
| Font-override extension | Replaces the page font with a dyslexia-friendly upright typeface on every site, automatically. | Everyday browsing where you want one consistent setup. |
| User stylesheet (Stylus) | Forces font-style: normal with a custom CSS rule. | Power users comfortable writing and maintaining CSS. |
| Copy into a plain editor | Pasting as plain text strips the italics entirely. | A single passage you want to read carefully or keep. |
The most reliable everyday fix is a font override. LexiFont swaps the page's typeface for an upright, dyslexia-friendly one - OpenDyslexic, Lexend, Atkinson Hyperlegible and more - across every site you visit. Because it sets the font and weight explicitly, synthetic italics from the original page are replaced rather than skewed, so the slanted-and-fuzzy problem disappears along with it. If you want the full set of accessibility fonts plus per-site control over weight and spacing, LexiFont Pro is a one-time unlock rather than a subscription.
If you would rather not install anything, Chrome and Safari both ship a built-in reader mode that re-renders most articles upright. It is a clean baseline and a good way to test whether italics specifically are the thing bothering you: if a page feels much easier in reader mode, the original styling - italics included - was part of the problem.
A quick self-test
Find an article with a long italic passage - a book review or an academic page works well. Read the italic section once as published, then open the same page in reader mode and read it again upright. Pay attention to two things rather than to first impressions: how often you re-read a line, and how your eyes feel at the end. If the upright version is noticeably easier, italics are costing you more than they cost the average reader, and it is worth setting up a default override so you stop paying that cost on every page.
If the difference is small, italics are not your bottleneck and your energy is better spent on font size or spacing, where the gains for most dyslexic readers are larger.
The takeaway
Italics are not an accessibility villain - they are a precision instrument used far too broadly. A slanted word or two carries meaning at almost no cost. A slanted paragraph quietly removes the vertical rhythm, the spacing and the crisp upright shapes that dyslexic readers depend on, and replaces them with a format that the legibility research has flagged as slower for decades. When you control the text, prefer bold for emphasis and keep italics for the handful of cases convention demands. When you do not, an upright font override or reader mode puts the page back on an even keel - usually faster than the time it took to notice the slant was bothering you.
Get LexiFont Pro - upright, dyslexia-friendly fonts on every site for $14.99 one-time